The true statement is B. This is a function.
In order to be considered a function, each element in the domain must be associated with exactly one element in the range. As long as every element in the domain is mapped to one and only one element in the range, it is a function. Option A is incorrect because a function does not require every element in the range to be associated with an element in the domain. There can be unused elements in the range without affecting the status of a function.
Option C is also incorrect because having elements in the domain mapped onto the same element in the range does not disqualify it from being a function. Multiple elements in the domain can share a single element in the range, and it will still be a function as long as each domain element is paired with only one range element. Finally, option D is incorrect because if an element in the domain has multiple elements in the range associated with it, then it would not be a function. However, the correct statement, option B, already indicates that this is a function, so option D is not true for the given question.
In conclusion, the statement "this is a function" is true, as long as each element in the domain has exactly one associated element in the range. Therefore, the correct option is B.
The question was incomplete, Find the full content below:
consider the following: which statement is true? question 1 options:
A. this is not a function because some of the elements in the range are not associated with any element in the domain.
B. this is a function.
C. this is not a function because some of the elements in the domain are mapped onto the same element in the range.
D. this is not a function because some elements in the domain have multiple elements in the range associated with it.
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food inspectors inspect samples of food products to see if they are safe. this can be thought of as a hypothesis test with the following hypotheses. : the food is safe. : the food is not safe. is the following statement a type i or type ii error? the sample suggests that the food is safe, but it actually is not safe.
This leads to the incorrect conclusion that the food is safe for consumption when it is actually not.
A food inspector's job is to inspect samples of food products to determine if they are safe for consumption. In this context, we can consider this process as a hypothesis test with the following hypotheses:
Null hypothesis (H0): The food is safe.
Alternative hypothesis (H1): The food is not safe.
The statement given - "The sample suggests that the food is safe, but it actually is not safe" - describes a situation where the food inspector incorrectly concludes that the food is safe when it is not. This is an example of an error in hypothesis testing.
There are two types of errors in hypothesis testing: Type I and Type II.
Type I error occurs when the null hypothesis is rejected when it is actually true. In other words, a Type I error leads to the false conclusion that the food is not safe when it actually is safe.
Type II error occurs when the null hypothesis is not rejected when it is actually false. In this case, a Type II error results in the false conclusion that the food is safe when it actually is not safe.
Given the statement, "The sample suggests that the food is safe, but it actually is not safe," we can determine that this is an example of a Type II error. The food inspector failed to reject the null hypothesis (that the food is safe) when it was, in fact, false.
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Ella went shopping with her mother they bought 3 pounds of bananas if each nana weighs 6 ounces how many bananas did they buy
Answer:
Ella and her mother bought 8 bananas.
Step-by-step explanation:
There are 16 ounces in 1 pound, so 3 pounds is equal to 3 x 16 = 48 ounces.
If each banana weighs 6 ounces, then they bought 48/6 = 8 bananas.
Answer:
8 Bananas
Step-by-step explanation:
Well for starters we know that 1 pound = 16 ounces, and Ella's mother bought 3 pounds of bananas which is equal to 48 ounces. If each Banana is 6 ounces we simply use the equation of 48/6 = x, and with simple maths we can find that x = 8
find the probability that the proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67
a) The probability that more than 64% of the sampled adults drinks coffee daily is equals to the 0.2574.
b) The probability that the sample proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67 is equals to the 0.2316.
We have a report data of National Coffee Association related to coffee drinking by adults. Sample proportion that adults drink coffee daily, p = 61% = 0.61
1 - p = 1 - 0.61 = 0.39
A random sample of sample size, n
= 250.
Population proportion= Sample proportion, p = 0.61
So, mean for population, μₚ = population proportion = 0.61
Standard deviations for population is σₚ
= √p( 1 - p)/n = √0.61(1 - 0.61)/250
= 0.0308
The sample proportion is approximately normally distributed, p ~ N(0.62,0.03072).
a) The probability that more than 64% of the sampled adults drinks coffee daily is, P( X > 0.64) = P ( (X - μₚ)/σₚ < (0.64 - 0.61)/0.0308 = 0.974
Using the normal distribution table probability value, P (Z >0.974 ) is equals to 0.2574 so, P( X> 0.64) = 0.2574.
b) The probability that the proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67, P ( 0.59 < p < 0.67) = P[(0.59 - 0.61) / 0.0308 < (p - μₚ)/σₚ < (0.67 - 0.61) / 0.0308]
= P(-0.65 < z < 1.94)
= P(z < 1.94) - P(z < -0.65 )
= 0.4738 - 0.2422
= 0.2316
Hence, required probability is 0.2316.
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Complete question:
Coffee: The National Coffee Association reported that 61% of U.S. adults drink coffee daily. A random sample of 250 U.S. adults is selected. Round your answers to at least four decimal places as needed.
a)find the probability that more than 64% of the sampled adults drinks coffee daily
b)Find the probability that the proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67.
to measure potential visitor exposure to possible sources of legionella, a questionnaire and a map of the site was sent to a randomized group of 220 people who had visited the exhibition. a respondent was categorized as a case (n
The odds ratio was for each factor in the table are 2.32, 6.67, 1.64, 1.33, 2.43, 2.33, 1.75 and 8.33 respectively, and the factor with the highest odds ratio is "Pausing at steam iron in hall 4," suggesting that it is the most likely responsible for the outbreak.
To calculate the odds ratio, we need to divide the number of cases with a specific factor by the number of controls with that same factor and then divide that result by the number of cases without that factor divided by the number of controls without that factor. For example, to calculate the odds ratio for pausing at the whirlpool spa in hall 3, we would do:
Odds ratio = (41/101)/(21/119) = 2.32
Using the same formula for the other factors, we get:
Underlying disease: 6.67
A smoker: 1.64
Total hours at exhibition: 1.33
Pausing at bubblemat in hall 3: 2.43
Pausing at electric kettle in hall 3: 2.33
Pausing at whirlpool in hall 4: 1.75
Pausing at steam iron in hall 4: 8.33
Based on these odds ratios, the factor most likely responsible for the outbreak is pausing at the steam iron in hall 4, as it has the highest odds ratio of all the factors considered.
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--The given question is incomplete, the complete question is given
" To measure potential visitor exposure to possible sources of Legionella, a questionnaire and a map of the site was sent to a randomized group of 220 people who had visited the exhibition. A respondent was categorized as a case (n=101) if they had symptoms of a respiratory infection within 20 days of their visit to the exhibition.
Study Population
Cases (n=101)
Controls (n=119)
Male
63
45
Underlying disease
11
2
A smoker
42
31
Total hours at exhibition
4
3
Pausing at whirlpool spa in hall 3
41
21
Pausing at bubblemat in hall 3
37
17
Pausing at electric kettle in hall 3
26
12
Pausing at whirlpool in hall 4
31
20
Pausing at steam iron in hall 4
16
3
Calculate the Odds Ratio for each of the factors considered in Table 2. (You must do this calculation for each factor, but you only need to provide an example calculation for one of them.)
If a larger odds ratio indicates a higher probability that a given factor is the causative mechanism for disease transfer (e.g., the source) which of the last five factors is most likely responsible for the outbreak? "--
Match the frequency table with the correct probability
distribution table.
XO f
5
10
15
5
15
0
1
2
3
4
The frequency table and the probability distribution table have been matched correctly.
What is a frequency table?The frequency table consists of the number of occurrences of each value of the random variable x.
The probability distribution table consists of the probability of occurrence of each value of the random variable x.
The probability distribution table shows the probability of each value of the random variable x. The value of x can either be 0, 1, 2, 3, or 4. The respective probabilities of each value are 0.1, 0.12, 0.32, 0.16, and 0.6.
The frequency table shows the number of occurrences of each value of the random variable x. The value of x can either be 0, 1, 2, 3, or 4. The respective frequencies of each value are 5, 10, 15, 5, and 15.
The total of the frequencies in the frequency table is equal to the total of the probabilities in the probability distribution table.
The frequency of each value of the random variable x is equal to the product of the probability of that value and the total number of occurrences in the frequency table.
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Chau wants to rent a boat and spend less than $53. The boat costs $7 per hour, and Chau has a discount coupon for $3 off. What are the possible numbers of hours Chau could rent the boat?
Chau could rent the boat for 1, 2, 3, 4, 5, 6, or 7 hours and still spend less than $53.
To find out the possible number of hours Chau could rent the boat, follow these steps:
Apply the discount coupon: Chau has a $3 discount, so subtract that from the total amount he wants to spend, which is $53.
$53 - $3 = $50
Determine the maximum number of hours Chau can rent the boat:
The boat costs $7 per hour, so divide the adjusted total amount by the cost per hour.
$50 ÷ $7 ≈ 7.14 hours
Since Chau can't rent the boat for a fraction of an hour, he can rent it for a maximum of 7 hours.
List the possible number of hours: Starting from 1 hour (assuming Chau wants to rent the boat for at least an hour), list all the whole numbers up to the maximum number of hours determined.
Possible number of hours: 1, 2, 3, 4, 5, 6, 7.
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If [tex]\frac{1}{a}:\frac{1}{b}:\frac{1}{c}=3:4:5[/tex], then [tex]a:b:c[/tex]
The calculated solution for the ratio given as a : b : c is 1/3 : 1/4 : 1/5
How to evaluate the ratioFrom the question, we have the following parameters that can be used in our computation:
1/a : 1/b : 1/c = 3 : 4 : 5
Take the inverse of both sides
So, we have
a : b : c = 1/3 : 1/4 : 1/5
The above means that the solution for a : b : c is 1/3 : 1/4 : 1/5
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liz has two children. the shorter child is a boy. what is the probability that the other child is a boy? assume that in 89% of families consisting of one son and one daughter the son is taller than the daughter.
The probability that the other child is a boy given that the shorter child is a boy is approximately 0.56 or 56%.
The problem can be solved using Bayes' theorem, which states that:
P(A|B) = P(B|A) * P(A) / P(B)
where A and B are events, P(A|B) is the conditional probability of event A given event B has occurred, P(B|A) is the conditional probability of event B given event A has occurred, P(A) is the prior probability of event A, and P(B) is the prior probability of event B.
Let A be the event that both children are boys, and B be the event that the shorter child is a boy. We are given that P(B|A') = 1/2, since the gender of the taller child is equally likely to be a boy or a girl.
We are also given that P(A') = 3/4, since there are three equally likely possibilities for the gender of the two children: boy-girl, girl-boy, and girl-girl. Finally, we are given that in 89% of families consisting of one son and one daughter the son is taller than the daughter, which means that P(B|A) = 0.89.
Using Bayes' theorem, we can calculate the probability that the other child is a boy given that the shorter child is a boy:
P(A|B) = P(B|A) * P(A) / P(B)
= 0.89 * (1/4) / [(1/2) * (3/4) + 0.89 * (1/4)]
≈ 0.56
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the driver of a car completes a trip. the graph displays data about the car's motion during the trip. which of the following statements about the car's motion is true? responses the total time for the car trip was 50 minutes. the total time for the car trip was 50 minutes. the car did not slow down during the trip. the car did not slow down during the trip. the car returned to where it had started the trip at the end of the trip. the car returned to where it had started the trip at the end of the trip. the car did not travel at a constant speed during the entire trip. the car did not travel at a constant speed during the entire trip. skip to navigation highlight previous 1, fully attempted. 2, fully attempted. 3, fully attempted. 4, unattempted. 5, unattempted. 6, unattempted. 7, unattempted. 8, unattempted. 9, unattempted. 10, unattempted.next auto saved at: 10:49:59
The car did not travel at a constant speed during the entire trip. Option d is the correct choice.
Option d is the correct answer. The graph shows that the car's velocity is not constant during the trip, indicating that the car did not travel at a constant speed. The car changes its velocity multiple times, which means it either speeds up, slows down or changes direction. Therefore, the car did not travel at a constant speed during the entire trip.
Option a is incorrect because the graph doesn't provide any information about the total time of the trip. Option b is incorrect because the graph clearly shows that the car slows down multiple times during the trip. Option c is also incorrect because the graph doesn't indicate that the car returned to its starting point.
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--The complete question is, The driver of a car completes a trip. the graph displays data about the car's motion during the trip. which of the following statements about the car's motion is true?
a. the total time for the car trip was 50 minutes.
b. the car did not slow down during the trip.
c. the car returned to where it had started the trip at the end of the trip.
d. the car did not travel at a constant speed during the entire trip.--
about a third (33%) of american men feel that, in general, people can be trusted. is it different for american women? in 2014, the general social survey asked its participants: generally speaking, would you say that most people can be trusted or that you can't be too careful in dealing with people? out of 929 women sampled, 259 said most people can be trusted.
The hypotheses being tested are: H0: p = 0.33 versus Ha: p > 0.33.
The test statistic is 1.51.
The p-value is 0.131.
So we have no statistically significant evidence that the population proportion of American women in 2014 who say people can be trusted is different from the proportion of men who feel the same. The p-value of 0.131 is greater than the commonly used alpha level of 0.05, which means that we fail to reject the null hypothesis. However, we cannot conclude that the proportions are equal, only that we do not have enough evidence to say that they are different.
The General Social Survey asked 929 American women in 2014 whether they thought people can be trusted or whether they cannot be too careful in dealing with people. Out of the 929 women sampled, 259 said that most people can be trusted. The hypotheses being tested are whether the proportion of American women who say people can be trusted is different from the proportion of men who feel the same (33%). The null hypothesis (H0) is that the proportion of American women who say people can be trusted is 0.33, while the alternative hypothesis (Ha) is that it is greater than 0.33.
The test statistic for this hypothesis test is 1.51, which is calculated using the sample proportion of women who say people can be trusted (0.28), the hypothesized proportion of men who feel the same (0.33), and the standard error of the sampling distribution. The p-value of the test is 0.131, which is the probability of getting a sample proportion as extreme or more extreme than the observed proportion of 0.28, assuming that the null hypothesis is true.
Since the p-value of 0.131 is greater than the commonly used alpha level of 0.05, we fail to reject the null hypothesis. Therefore, we do not have enough statistical evidence to conclude that the proportion of American women who say people can be trusted is different from the proportion of men who feel the same. However, we cannot conclude that the proportions are equal, only that we do not have enough evidence to say that they are different.
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--The question is incomplete, answering to the question below--
"About a third (33%) of American men feel that, in general, people can be trusted. Is it different for American women? In 2014, the General Social Survey asked its participants: Generally speaking, would you say that most people can be trusted or that you can't be too careful in dealing with people? Out of 929 women sampled, 259 said most people can be trusted.
The hypotheses being tested are: H0: p = 0.33 versus Ha: p [ Select ] ["not =", ">", "<"] 0.33
The test statistic is [ Select ] ["-3.31", "0.279", "-1.51"]
The p-value is [ Select ] ["0.9995", "0.0005", "0.002", "0.001"]
So we have [ Select ] ["very strong", "strong", "some", "no"] statistically significant evidence that the [ Select ] ["population proportion", "sample proportion"] of American women in 2014 who say people can be trusted is different from the proportion of men who feel the same."
the radius of a circle is 3 miles. what is the circumference? give the exact answer in simplest form.
Answer:
18.84 miles
Step-by-step explanation:
Circumference = 2πr
= 2 × 3.14 × 3
= 18.84 miles
The exact circumference of the circle with radius 3 miles is 6π or 18.84 miles (approx).
The radius of a circle is 3 miles. What is the circumference?The formula to calculate the circumference of a circle is given as:
Circumference = 2πr, where r is the radius of the circle and π is a constant value, approximately equal to 3.14. Substituting the given value of r in the formula, we have:
Circumference = 2π(3)
Circumference = 6π
Therefore, the exact circumference of the circle is 6π miles. To simplify this answer in its simplest form, we can use the value of π as 3.14 (approximately).Circumference = 6π = 6(3.14) = 18.84Therefore, the exact circumference of the circle is 18.84 miles (approx).
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Paul and Greg each draw a triangle with one side of 3cm, one
side of 9cm and one side of 10cm. Greg says its trangle must
be congrent is Greg correct?
Step-by-step explanation:
Yes they are congruent via the S-S-S triangle theorem.
triangles are congruent if they have three equal sides ( Side-Side-Side)
the height of seaweed of all plants in a body of water are normally distributed with a mean of 10 cm and a standard deviation of 2 cm. use a calculator to find which length separates the lowest 30% of the means of the plant heights in a sampling distribution of sample size 15 from the highest 70%? round your answer to two decimal places.
The length that separates the lowest 30% of the means from the highest 70% is between 9.74 cm and 10.26 cm
How to find the length that separates the lowest 30% of the means from the highest 70%?The mean of the sampling distribution of the mean for a sample size of 15 will also be 10 cm (since the population mean is 10 cm). The standard deviation of the sampling distribution will be:
standard deviation = population standard deviation / sqrt(sample size)
standard deviation = 2 cm / sqrt(15)
standard deviation ≈ 0.5164 cm
We want to find the length that separates the lowest 30% of the means from the highest 70%. We can use the z-score formula to find the corresponding z-scores for these percentiles:
z = (x - μ) / σ
For the lowest 30%, we want to find the z-score that corresponds to a cumulative probability of 0.3. Using a standard normal distribution table or calculator, we can find that this is approximately -0.5244.
-0.5244 = (x - 10) / 0.5164
Solving for x, we get:
x = 9.74 cm
Similarly, for the highest 70%, we want to find the z-score that corresponds to a cumulative probability of 0.7, which is approximately 0.5244.
0.5244 = (x - 10) / 0.5164
Solving for x, we get:
x = 10.26 cm
Therefore, the length that separates the lowest 30% of the means from the highest 70% is between 9.74 cm and 10.26 cm, inclusive.
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an international calling plan charges 45 cents per minute or fraction of a minute for each call. what is the cost for making a 5 minute call? 225 cents 450 cents 270 cents 235 cents
Therefore, the answer is 225 cents.
When an international calling plan charges 45 cents per minute or fraction of a minute for each call, the cost for making a 5-minute call is 225 cents.What is an international calling plan?
An international calling plan is a type of phone plan that allows people to make calls to other countries at lower rates than they would normally be charged. The cost of a call will vary depending on the country and the duration of the call. The per-minute rate may be used to calculate the cost of making an international call when an international calling plan charges 45 cents per minute or fraction of a minute for each call.
If a 5-minute call is made under the given circumstances, the cost of the call will be[tex] 5 x 45 = 225 [/tex]cents.
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in 1995, the math sat scores followed a normal distribution with mean 490 and standard deviation 50. if you select a random sample if 16 people who took the sat in 1995, determine the following probabilities. round to 4 decimal places. what is the probability the sample mean is less than 475? what is the probability the sample mean is greater than 500? what is the probability the sample mean is between 475 and 500?
If the math SAT scores followed a normal-distribution, then the probability that
(a) sample mean is less than 475 is 00.1151,
(b) sample mean is greater than 500 is 0.2119,
(c) sample mean is between 475 and 500 is 0.6730.
The mean score (μ) = 490, the standard-deviation (σ) = 50,
Part (a) :
The random sample of 16 people is selected,
So, σₓ = σ/√n = 50/√16 = 12.5,
⇒ P(x < 475) = P[ (x-μ)/σ < (475-490)/12.5],
⇒ P(z < -1.2) = 0.1151.
So, Probability that sample mean is less than 475 is 0.1151.
Part (b) :
The probability that the mean score is greater than 500 is written as :
⇒ P(x > 500) = 1 - P(x < 500) = 1 - P[z < (500 - 490)/12.5],
⇒ 1 - P(z < 0.8)
⇒ 1 - 0.7881 = 0.2119.
So, probability that mean score is greater than 500 is 0.2119.
Part (c) :
The probability that the mean score is between 475 and 500 is written as :
⇒ P[ (475 - 490)/12.5 < z < (500 - 490)/12.5 ],
⇒ P( -1.2 < z < 0.8)
⇒ P(z < 0.8) - P(z < -1.2)
From the normal table,
⇒ 0.7881 - 0.1151 = 0.6730,
So, probability that mean score is between 475 and 500 is 0.6730.
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8/12[tex]\frac{x}{y} \frac{x}{y}[/tex]
Simplified expression of [tex]\rm (8/12)^{(x/y)} \times (x/y)[/tex] is ([tex]\rm 2^{y}[/tex])/([tex]\rm 3^{x/y^2}[/tex]).
What is an algebraic expression?An algebraic expression is a mathematical phrase that contains variables, constants, and mathematical operations. It may also include exponents and/or roots. Algebraic expressions are used to represent quantities and relationships between quantities in mathematical situations, often in the context of problem-solving.
Assuming you meant to write the expression as:
[tex](8/12)^{(x/y)}[/tex]* (x/y)
We can simplify it as follows:
First, we can simplify the fraction 8/12 to 2/3:
[tex](2/3)^{(x/y)}[/tex] * (x/y)
Next, we can apply the properties of exponents to simplify [tex](2/3)^{(x/y)}[/tex] as follows:
[tex](2/3)^{x/y}[/tex] = [tex](2^{x/y}/3^{x/y})^x[/tex]
= [tex]2^{x/y}[/tex]/[tex]3^{x/y}[/tex]
Substituting this back into the original expression, we get:
([tex]2^{x/y}[/tex]/[tex]3^{x/y}[/tex]) * (x/y)
= ([tex]2^{x/y*x}[/tex])/([tex]3^{x/y*y}[/tex])
= ([tex]\rm 2^{y}[/tex])/([tex]\rm 3^{x/y^2}[/tex]).
So the final simplified expression is ([tex]\rm 2^{y}[/tex])/([tex]\rm 3^{x/y^2}[/tex]).
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Complete question:
Factorize the given term to simplest form:
[tex]\rm (8/12)^{(x/y)} \times (x/y)[/tex]
Hey does anyone know the answer to this assignment ?
According to the Side-Angle-Side Theorem, the triangles JKL and XYZ are congruent because KL XV, JK VZ, and K V.
What is congruent triangles?Congruent triangles are two triangles that have the same size and shape. They have exactly the same angles and sides. Congruent triangles can be used to prove theorems in geometry, such as the side-angle-side (SAS) theorem and the angle-side-angle (ASA) theorem. Congruence can also be used to find the unknown side length of a triangle when two sides and an angle are known.
How to demonstrate the congruence of two triangles
This is a congruency issue in which we must demonstrate the congruence of two triangles. If two triangles have the same sides in the same order, they are said to be congruent. According to the figure, we discover the following presumptions:
KL XV, JK XV, and K XV
According to the Side-Angle-Side Theorem, which is satisfied by these presumptions, the triangles JKL and XYZ.
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yes both triangles BDC and PNO are congruent by AAS congruency.
What is congruent triangles?Congruent triangles are two triangles that have the same size and shape. They have exactly the same angles and sides. Congruent triangles can be used to prove theorems in geometry, such as the side-angle-side (SAS) theorem and the angle-side-angle (ASA) theorem and the angle-angle-side Congruence can also be used to find the unknown side length of a triangle when two sides and an angle are known.
to demonstrate the AAS congruency of two triangles
for two angles and a non-included side in one triangle are congruent to two angles and the corresponding non-included side in another triangle, then the triangles are congruent.
in triangles BDC and PNO
given that
BD=PN
∠CBD=∠OPN
∠BCD=∠PON
According to the Angle -side -Angle Theorem, which is satisfied by these presumptions, the triangles BDC and PNO
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100 POINTS PLEASE HURRY
The image of a composite figure is shown.
A four-sided shape with the bottom side labeled as 17.4 yards. The height is labeled 6 yards. A portion of the top side from the perpendicular to right vertex is labeled 2.1 yards. The portion of the top from the perpendicular to the left vertex is 15.3 yards.
What is the area of the figure?
91.8 yd2
104.4 yd2
117 yd2
219.24 yd2
The height divides the shape into 2 parts : a trapezoid and a right-angled triangle.
A(trapezoid) = [(a+b)h]/2, where a;b;h are the length, width and height respectively.
-> A(trapezoid) = [(15.3+17.4) x 6]/2 = 98.1 (yd2)
A(triangle) = lh/2, where l is the base.
-> A(triangle) = 2.1 x 6 : 2 = 6.3 (yd2)
So, the area of the figure is 98.1 + 6.3 = 104.4 (yd2)
Mrs. Hinojosa, the student council sponsor, is planning an end-of-year field trip for the 72 student council members. Mrs. Hinojosa misplaced the survey data, but
she found some of her notes from the data, including a partially completed two-way table.
Notes:
• The number of students who like bowling, but do not like ice skating is triple the number of students who like ice skating, but do not like bowling.
• 50% of the students like one, but not both activities.
of the students like bowling.
Student Council Field Trip Survey
Do Not Like
Bowling
Like
Ice Skating
Do Not Like
Ice Skating
Like
Bowling
(9 students)
?
Total
Total 663% 33¹%
100%
(72 students)
How many of the 72 student council members like neither bowling nor ice skating?
A 12
B 21
C
15
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The number of student council members who like neither bowling nor ice skating is 27.
How to solveLet's denote the following:
a = number of students who do not like either activity (bowling or ice skating)b = number of students who like ice skating but do not like bowlingc = number of students who like bowling but do not like ice skatingd = number of students who like both activitiesWe are given the following information:
c = 3 * b (number of students who like bowling but not ice skating is triple the number who like ice skating but not bowling)
50% of students like one but not both activities, so (b+c)/72 = 0.5
9 students like both activities, so d = 9
The total number of students is 72.
Let's solve for a, b, and c:
From (2), we have b + c = 36.
From (1), we can rewrite c as c = 3b.
Substituting this into the equation from (2), we get:
b + 3b = 36
4b = 36
b = 9
Now, we can find the value of c:
c = 3b = 3 * 9 = 27
Finally, we can find the value of a.
We know that a + b + c + d = 72:
a + 9 + 27 + 9 = 72
a + 45 = 72
a = 27
Therefore, the number of student council members who like neither bowling nor ice skating is 27.
The correct answer is not among the options provided.
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Please im low on points and I need this it is timed.
Answer:
25% off
Step-by-step explanation:
Answer It’s Save 20$, cause if u buy Something More then 88$ U could 20% off which the new price will be 68$ (to make sure Take 88 from 20 Which will prob be 68) but 68$ would be the new price if Lacey Picked the “Save $20 one purchased Of $75 or more”
Step-by-step explanation hope this helps
2nd one what is the size of angle b??
Answer:
64°
Step-by-step explanation:
Given:
A complete angle is 360 degrees
A complete angle is 360 degreesOne right angle (90 degrees)
A complete angle is 360 degreesOne right angle (90 degrees)An angle of 154 degrees
A complete angle is 360 degreesOne right angle (90 degrees)An angle of 154 degreesTwo cross angles that are equal
Find: ∠b - ?
.
First, let's find the size of the smaller cross angles:
180° - 154° = 26°
Since there's two of them, we have to multiply this number by 2:
26° × 2 = 52°
Now, we can find ∠b:
∠b = 360° - 90° - 154° - 52° = 64°
NEED HELP DUE TODAY WELL WRITTEN ANSWERS ONLY!!!!
Here is a graph of the equation y = 2sin(Θ) - 3. Use the graph to find the amplitude of this sine equation.
The answer of the given question based on the graph is the amplitude of the given sin equation is 2.
What is Amplitude?Amplitude refers to the maximum displacement of a wave from its equilibrium or rest position. It is a characteristic of a wave that measures the magnitude or strength of its oscillations or vibrations. The amplitude refers to the distance from the midline (or average value) of the function to its maximum or minimum value. The amplitude is a positive value, and it is half the distance between the maximum and minimum values of the function.
In this case, we can see from the graph that the midline of the function is y = -3, which is the value of the function when sin(Θ) = 0 (since 2sin(Θ) - 3 = 2(0) - 3 = -3).
The maximum value of the function occurs when sin(Θ) = 1 (since the maximum value of sin(Θ) is 1), so the maximum value of 2sin(Θ) is 2. Therefore, the maximum value of 2sin(Θ) - 3 is 2 - 3 = -1.
The distance from the midline (-3) to the maximum value (-1) is 2 units, so the amplitude of the sine function y = 2sin(Θ) - 3 is 2.
Therefore, the amplitude of the given sin equation is 2.
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He used the scale 1 inch : 2 yards. A soccer field in the park is 35 inches wide in the drawing. How wide is the actual field?
The actual width of the soccer field will be around 70 yards.
We are given that the width of the soccer field in the drawing is 35 inches. To find the actual width of the soccer field, we need to use the scale provided. We can set up a proportion to relate the dimensions in the drawing to the actual dimensions:
1 inch ÷ 2 yards = 35 inches ÷ x
where x is the actual width of the soccer field in yards.
To solve for x, we can cross-multiply:
1 inch × x = 35 inches × 2 yards
Simplifying, we get:
x = (35 inches × 2 yards) ÷ 1 inch
x = 70 yards
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Underwater pressure consists of atmospheric pressure, which is
101
101101 kilopascals
(
kPa
)
(kPa)left parenthesis, start text, k, P, a, end text, right parenthesis, plus
101
kPa
101kPa101, start text, k, P, a, end text of hydrostatic pressure for every
10
1010 meters
(
m
)
(m)left parenthesis, start text, m, end text, right parenthesis of depth under water. Which inequality best represents the depth,
d
dd, in meters, that is permitted for a scuba diver who is advised not to exceed
220
kPa
220kPa220, start text, k, P, a, end text of underwater pressure?
The inequality representing the maximum depth permitted for a scuba diver is:
d < 11 meters
To find the inequality representing the maximum depth permitted for a scuba diver, we need to set up an inequality with underwater pressure (consisting of atmospheric pressure and hydrostatic pressure).
Underwater pressure is given by the equation:
Underwater Pressure = Atmospheric Pressure + Hydrostatic Pressure
where:
Atmospheric Pressure = 101 kPa
Hydrostatic Pressure = 101 kPa for every 10 meters of depth (101 kPa/10 m = 10.1 kPa/m)
Depth = d meters
Now, we know the maximum underwater pressure for the scuba diver is 220 kPa.
So, we set up the inequality:
220 kPa > 101 kPa + 10.1 kPa/m * d
Now, we need to solve for d:
220 kPa - 101 kPa > 10.1 kPa/m * d
119 kPa > 10.1 kPa/m * d
Now, divide both sides by 10.1 kPa/m:
119 kPa / 10.1 kPa/m > d
11.7821782... > d
Since we are finding the depth, we can round down to the nearest whole number:
11 > d
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Question: Underwater pressure consists of atmospheric pressure, which is 101 kilopascals (kPa), plus 101 kPa of hydrostatic pressure for every 10 meters (m) of depth under water. Which inequality best represents the depth, d, in meters, that is permitted for a scuba diver who is advised not to exceed 220 kPa of underwater pressure?
101+ 101d≤ 220
101+10.1d ≤ 220
101+10.1d> 220
4
101+101d> 220
the lifetime of lightbulbs that are advertised to last for 4100 hours are normally distributed with a mean of 4400 hours and a standard deviation of 300 hours. what is the probability that a bulb lasts longer than the advertised figure?
the probability that a bulb lasts longer than the advertised figure of 4100 hours is approximately 0.8413 or 84.13%.
The probability that a bulb lasts longer than the advertised figure can be found using the normal distribution formula. In this case, we have a mean of 4400 hours and a standard deviation of 300 hours. The advertised lifetime is 4100 hours. We will calculate the z-score and then use the standard normal distribution table to find the probability. Here's the step-by-step explanation:
Calculate the z-score: The z-score is a measure of how many standard deviations away from the mean a data point is. To calculate the z-score for the advertised lifetime (4100 hours), use the formula:
z = (X - μ) / σ
where X is the advertised lifetime (4100 hours), μ is the mean (4400 hours), and σ is the standard deviation (300 hours).
z = (4100 - 4400) / 300
z = -300 / 300
z = -1
Use the standard normal distribution table: Now that we have the z-score (-1), we can use the standard normal distribution table to find the probability that a bulb lasts longer than the advertised figure. Look for the value corresponding to -1 in the table, which is 0.1587.
Calculate the probability: The value we found in the standard normal distribution table (0.1587) represents the probability that a bulb lasts less than the advertised figure (4100 hours). To find the probability that a bulb lasts longer, we need to subtract this value from 1:
Probability (bulb lasts longer than advertised figure) = 1 - 0.1587
Probability (bulb lasts longer than advertised figure) = 0.8413
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there are 240 students in a school. If there are 144 boys, what is the percentage of students are boys?
So 60% of the students in the school are boys.
A percentage is a number or ratio expressed as a fraction of 100. It is often denoted using the percent sign, although the abbreviations pct., pct, and sometimes pc are also used. A percentage is a dimensionless number; it has no unit of measurement.
To find the percentage of students that are boys, we need to find what fraction of the total number of students are boys, and then convert the fraction to a percentage.
The fraction of students that are boys is:
144/240 = 0.6
To convert this fraction to a percentage, we can multiply by 100:
0.6 * 100 = 60
Therefore, 60% of the students in the school are boys.
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how many integers between 100 and 999, inclusive, have the property that some permutation of its digits is a multiple of 11 between 100 and 999? for example, both 121 and 211 have this property. (2017amc10a problem 25) (a) 226 (b) 243 (c) 270 (d) 469 (e)
226 integers are present between 100 and 999, inclusive, and have the property that some permutation of its digits is a multiple of 11 between 100 and 999. Hence, option A is the correct option.
The problem statement is to find the number of multiples of 11 between 100 and 999 inclusive, where some multiples may have digits repeated twice and some may not.
To solve this problem, we can first count the number of multiples of 11 between 100 and 999 inclusive, which is 81. Some of these multiples may have digits repeated twice, and each of these can be arranged in 3 permutations. Other multiples of 11 have no repeated digits, and each of these can be arranged in 6 permutations. However, we must account for the fact that switching the hundreds and units digits of these multiples also yields a multiple of 11, so we must divide by 2, giving us 3 permutations for each of these multiples.
Thus, we have a total of 81 × 3 = 243 permutations. However, we have overcounted because some multiples of 11 have 0 as a digit. Since 0 cannot be the digit of the hundreds place, we must subtract a permutation for each of these multiples. There are 9 such multiples (110, 220, 330, ..., 990), yielding 9 extra permutations. Additionally, there are 8 multiples (209, 308, 407, ..., 902) that also have 0 as a digit, yielding 8 more permutations.
Therefore, we must subtract these 17 extra permutations from the total of 243, giving us 226 permutations in total. Hence, option A is the correct option.
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Which expression is equivalent to 9t+4t?
9t + 4t can be simplified by combining the like terms (terms with the same variable and exponent). The coefficients of the two terms (9 and 4) are added to get the coefficient of the simplified term:
9t + 4t = (9 + 4)t = 13t
Therefore, the expression that is equivalent to 9t + 4t is 13t.
Suppose a savings and loan pays a nominal rate of 3.1% on savings deposits. Find the effective annual yield if interest is compounded annually.
Question content area bottom
Part 1
The effective annual yield is enter your response here%.
(Type an integer or a decimal rounded to the nearest thousandth as needed.)
The effective annual yield is approximately 3.164%.
you gave your friend a short term 2 year loan of 43.000 at 3% compounded annually. what will be your total return?
Answer:
45618.7
Step-by-step explanation:
[tex]f = p \times (1 + r \n) ^{nt} = f \: 43000[/tex]