In the case of Typical behavior of the sales prices of houses median is the best term. In the case of Ages of 1st graders mean is the best way of central tendency and for Heights of women mode is the best measure.
First of all we have to know the Mean, median and mode. The mean of a data set is found by adding all numbers in the data set and then dividing by the number of values in the set. The median is the middle value when a data set is ordered from least to greatest. The mode is the number that occurs most often in a data set.
In the case of typical behavior of the variable sales price of houses, the Median will be the best measure of central tendency because the median will not get affected by the higher/lower prices of houses.
The age of each kid will be almost the same. In order to represent the typical behavior of the variable Age of 1st graders, the mean will be the best measure of central tendency.
Incase of Heights of women, the mode will be the best measure of central tendency as it will describe the height that most of the females have.
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An achievement exam was given to a population of 1,000 students. However, a sample of only seven of student scores is listed along with their respective z score and percentile rank in the following table. TEST SCORE 42 57 67 72 77 87 97 z score -1.50 -0.75 -0.25 0 0.25 0.75 1.25 percentile rank 10 25 30 45 50 75 95 Using the table information, the test score representing the 3rd decile is: a. 67 b. 77 c. 57 d. 72 e. 97
The test score representing the 3rd decile is 67. So the option a is correct.
In the given question, an achievement exam was given to a population of 1,000 students.
However, a sample of only seven of student scores is listed along with their respective z score and percentile rank in the following table.
TEST SCORE 42 57 67 72 77 87 97
z score -1.50 -0.75 -0.25 0 0.25 0.75 1.25
percentile rank 10 25 30 45 50 75 95
Using the table information, we have to find the test score representing the 3rd decile.
As we know that the 3rd decile is equal to the 30th percentile.
So that the 3rd decile have the percentile rank = 30
The test score equivalent to percentile rank 30 is 67.
So, the test score representing the 3rd decile is 67. So the option a is correct.
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a) Complete the prime factor trees for 24 and 40:
24
2
2
6
2
40
2
2
3
b) What is the Lowest Common Multiple of 24 and 40?
2
2
1
5
Submit Answer
Answer:
a)
24 = 2³ × 3
40 = 2³ × 5
b)
LCM = 120
Step-by-step explanation:
a)
24 40
/ \ / \
2 12 2 20
/ \ / \
2 6 2 10
/ \ / \
2 3 2 5
24 = 2³ × 3
40 = 2³ × 5
b)
LCM = 2³ × 3 × 5
LCM = 120
Which expression can be written as
[tex]k \sqrt{3} [/tex]where k is an integer?
a.
[tex] \sqrt{63} [/tex]
b.
[tex] \sqrt{108} [/tex]
c.
[tex] \sqrt{144} [/tex]
d.
[tex] \sqrt{150} [/tex]
Answer:
B. [tex] \sqrt{108} [/tex]
Step-by-step explanation:
The simplified forms of these roots are :
A. [tex] \sqrt{63} [/tex] = [tex]3 \sqrt{7} [/tex]
B. [tex] \sqrt{108} [/tex] = [tex]6 \sqrt{3} [/tex]
C. [tex] \sqrt{144} [/tex] = [tex]3 \sqrt{286} [/tex]
D. [tex] \sqrt{150} [/tex] = [tex]5 \sqrt{6} [/tex]
Check:
[tex] \sqrt{108} [/tex]
[tex] \sqrt{36(3)} [/tex]
[tex] \sqrt{ {6}^{2} \times 3} [/tex]
[tex]6 \sqrt{3} [/tex]
Hope it is helpful...find the volume of a right circular cone that has a height of 13.4m and a base with a radius of 12.5m.round your answer to the nearest tenth of a cubic meter
Answer:2192.6
Step-by-step explanation:
Claire buys a new car for £5700.
She pays a deposit of 12%
She then pays the rest of the cost in 15 equal monthly payments.
How much is each monthly payment
Answer:
$334.40
Step-by-step explanation:
Find how much she has left to pay after the deposit:
Multiply 5700 by 0.88
5700(0.88)
= 5016
Divide this by 15 to find how much each monthly payment is:
5016/15
= 334.4
So, each monthly payment is $334.40
1. To find members for her skate team, Heather prints flyers to display around town. She posts 6 flyers
at her school and f flyers at each of the 3 nearest skate parks. Write two different expressions that
represent the total number of flyers posted.
Find the total number of flyers posted if f= 5.
Recently, the Town of Aberdeen announced they were going to acquire a large parcel of land for a new park initiative.
What is piecewise function?To fully understand what piecewise functions are and how we can construct our own piecewise-defined functions, let’s first dive into a deeper understanding of how it works.A piecewise function is a function that is defined by different formulas or functions for each given interval. It’s also in the name: piece. The function is defined by pieces of functions for each part of the domain.In mathematics, a piecewise-defined function is a function defined by multiple sub-functions, where each sub-function applies to a different interval in the domain. Piecewise definition is actually a way of expressing the function, rather than a characteristic of the function itself.To learn more about piecewise function refer to:
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Is 2x 3 5 is a linear equation?
yes, 2x + 3 = 5 is a linear equation.
What is a linear equation?A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) component are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables." If a linear equation contains two variables, it is referred to as a linear equation in two variables, and so on.
Non-linear equations are those that do not produce a straight line. It has a changeable slope value and resembles a graphed curve.
Given that,
2x + 3 = 5
or, 2x = 5 - 3
or, 2x = 2
or, x = 2/2
x = 1
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which option is correct (multiple choice)
Answer:
SAS
Step-by-step explanation:
7O POINTS HELP ASAP!!!
Given the graph of this function, determine the statement that best describes the end behavior.
x->∞,y->∞ and as x-> - ∞ , y-> - ∞ this statement best describes the end behavior.
What is Graph?Graph is a mathematical representation of a network and it describes the relationship between lines and points.
First, we need to analyze the plotting of the graph. When it is on the negative axis of x, as the values of x increase (x values increasing in the negative axis means it's decreasing in value), the y values also increase. So as x decreases, y increases.
On the positive axis of x, as the x values increase, the corresponding values of y also increase with x. So as x increases, y values also increase with it.
Hence, x->∞,y->∞ and as x-> - ∞ , y-> - ∞ this statement best describes the end behavior.
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What is the area of this parallelogram?
Answer: B
Step-by-step explanation:
Area = 4 x 5
= 20 cm^2
Remember that area of parallelogram is the base x perpendicular height. is The perpendicular height is not 6cm but 5cm. (right angle labelled on diagram)
Answer: 20 cm²
Step-by-step explanation:
area parallelogram = base x height
=> 4 x 5 = 20
can someone help me
Answer:
y=-1/4x+2
Step-by-step explanation:
Answer:
Step-by-step explanation:
add all the # and see what you get
a company spent 762500 to make a movie that will be shown in theaters for 8 weeks. If the movie makes 1250000 in its first week how much money does the movie need to earn in the next 7 weeks to make profit of atleast 2,000,000
The movie need to earn $ 1,512,500 in the next 7 weeks.
What is Unitary Method?The unitary technique involves first determining the value of a single unit,
followed by the value of the necessary number of units.
For Example, Let's say Ram spends 36 Rs. for a dozen (12) bananas.
12 bananas will set you back 36 Rs. 1 banana costs 36 x 12 = 3 Rupees.
As a result, one banana costs three rupees. Let's say we need to calculate the price of 15 bananas.
This may be done as follows: 15 bananas cost 3 rupees each; 15 units cost 45 rupees.
Given:
A company spent 762500 to make a movie.
The total movie will be earned
= 762500 + 2000000
= 2,762,500
First week the movie earned 1, 250,000.
So, in 7 weeks the movie needs to earned
= 2,762,500 - 1, 250,000
= 1,512,500
Hence, the movie earn 1,512,500 more.
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1/6 over 1/4 x 10= x
Answer: 5/12 (five over twelve)
Step-by-step explanation:
1. COMBINE LIKE TERMS
1/6
----- * 10 = x
1/4
5/12 = x
x = 5/12
Which expression is equivalent to
4x + ?
o 1(-x+2)
o 1(-2+ 3)
-1(-x+ )
- (x + 2)
Answer:
Definitely Option A.
When you expand the bracket of Option A... You have your equation
Which is
-1/4x + 1/2.
what is the value of z? (multiple choice)
A grocer makes a display of cans in which the top row has one can and each lower row has two more cans than the row above it. If the display contains $100$ cans, how many rows does it contain
A grocer makes a display of cans in which there are 10 rows.
The top row has one can and each lower row has two more cans than the row above it.
We can write it as sequence:
1, 3, 5, 7, . . .
We can observe that it's an arithmetic sequence: 1, 3, 5, 7, . . . , 2n-1
We know that the formula for the sum of n-terms of arithmetic sequence:
S(n) = (n/2)(1 + 2n-1)
Here, Sn = 100
So, (n/2)[1 + 2n-1] = 100
n(1 + 2n + 1)
n(2n) = 200
2n^2 = 200
n^2 = 100
n = 10
Hence, the number of rows = 10
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2n+4=22
gimme the answer
Answer: n=9
Step-by-step explanation:
I'm assuming you want to solve for n, as that's the only possible question I can think of.
To solve for n, we want to isolate n by using inverse operations.
2n+4=22 [subtract both sides by 4]
2n=18 [divide both sides by 2]
n=9
Therefore, n=9 Is the answer.
The length of some material is 8.3m correct to 2 significant figures. Write the error int
length, x, of the material.
Therefore , the solution of the given problem of equation comes out to be the error range for x is [1250, 1350].
Explain the equation.A mathematical equation is a formula that uses the equal sign (=) to connect two statements and express equality. A mathematical statement that proves the equality of two mathematical expressions is known as an equation in algebra. For instance, the components 3x + 5 and 14 in the equation 3x + 5 = 14 are separated by an equal sign. The equal sign is a crucial part of mathematical formulas, especially equations. Algebra is frequently utilized in equations. Algebra is used in mathematics when it is difficult to determine a precise quantity.
Here,
Given: Some material has a length of 8.3 meters
We have provided a number, x, that has been rounded to two significant numbers with the supplied error.
Next, we must determine the x error interval.
It is necessary for x to have a value that is both bigger than or equal to 1250 and less than or equal to 1300.
i.e.,1250 ≤ x ≤ 1300 ---(1)
2. The value of x is more than 1300 but not equal to 1350.
1300 ≤ x ≤ 1350--- (2)
When (1) and (2) are combined, we obtain
1250≤ x ≤ 1350
As a result, 1350 is not part of the error-interval for x.
As a result, the interval notation is [1250, 1350].
As a result, the error range for x is [1250, 1350].
Therefore , the solution of the given problem of equation comes out to be the error range for x is [1250, 1350].
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Can someone please help me out :))
Answer:
sin(T)
cos(C)
Step-by-step explanation:
sine goes up or down for angles in the circle.
cosine goes left or right for angles in the circle.
consider a circle with is center at T, and it goes through C (so, the radius is 25 = TC).
then 7 = sin(T)×25
24 = cos(T)×25
so, sin(T) = 7/25
then, sin(T) = cos(90-T)
and the angle at C = 90-T.
therefore, cos(C)=sin(T)=7/25
tan(x) = sin(x)/cos(x)
and that would lead here always to a 7/24 or 24/7 ratio.
so, no tan function is right.
Using traditional methods it takes 8.5 hours to receive a basic flying license. A new license training method using Computer Aided Instruction (CAI) has been proposed. A researcher used the technique on 21 students and observed that they had a mean of 8.8 hours with a variance of 1.21 . Is there evidence at the 0.05 level that the technique performs differently than the traditional method? Assume the population distribution is approximately normal. Step 1 of 5 : State the null and alternative hypotheses
As the p-value of the test is of 0.215 > 0.05, there is not enough evidence at the 0.05 level that the technique performs differently than the traditional method.
What are the null and the alternative hypothesis?At the null hypothesis, it is tested if there is no evidence of different performance, that is, the mean is of 8.5 hours, hence:
[tex]H_0: \mu = 8.5[/tex]
At the alternative hypothesis, it is tested if there is evidence of different performance, with a mean different of 8.5 hours, hence:
[tex]H_1: \mu \neq 8.5[/tex]
What is the test statistic?The population standard deviation is known, hence the z-distribution is used to obtain the test statistic.
The equation is given as follows:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.[tex]\sigma[/tex] is the standard deviation of the population.n is the sample size.The parameters for this problem are given as follows:
[tex]\overline{x} = 8.8, \mu = 8.5, \sigma = \sqrt{1.21} = 1.1, n = 21[/tex]
Hence the test statistic is calculated as follows:
[tex]z = \frac{8.8 - 8.5}{\frac{1.1}{\sqrt{21}}}[/tex]
z = (8.8 - 8.5)/(1.11/square root of 21)
z = 1.24.
What is the p-value and conclusion?The p-value is obtained using a z-distribution calculator.
We have a two-tailed test, as we are testing if the mean is different of a value, with a test statistic of z = 1.24, hence the p-value is of:
0.215.
(2 multiplied by the subtraction of one and the p-value of z = 1.24).
The p-value is greater than the significance level of 0.05, meaning that there is not enough evidence to reject the null hypothesis and conclude that there is a difference between the two methods.
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PLEASE HELP!! Puzzle One
Determine the volume of the following cylinders with the given dimensions. To break
the code substitute your answers in for the correct letters. Make sure to follow the
order of operations! Round your answers to the hundredth place. Use 3.14 for an
approximation for pi.
The volume of the cylinders are 320.625 m³, 921.6 ft³,824 in³ and 35.6 in³
How to calculate volume?Volume is the amount of space occupied by a three dimensional shape or object.
Volume of cylinder = π * radius² * height
a) Volume of cylinder = π * (15/2)² * 5.7 = 320.625 m³
b) Volume of cylinder = π * (8)² * 14.4 = 921.6 ft³
c) Volume of cylinder = π * (6)² * 24 = 824 in³
d) Volume of cylinder = π * (2)² * 8.9 = 35.6 in³
The volume of the cylinders are 320.625 m³, 921.6 ft³,824 in³ and 35.6 in³
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Rotation of PQRS by 90 degree.
What does a math transformation mean?A point, line, or geometric figure can be transformed in one of four ways, each of which affects the shape and/or location of the object. Pre-Image refers to the object's initial shape, and Image, after transformation, refers to the object's final shape and location. What are the four mathematical transformations?
In how many ways Transformations can be divided?Translation, rotation, reflection, and enlargement. You must be able to carry out each transformation and recognize which ones have already been done.
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An object is moving at a speed of 11 yards every 6 months. Express this speed in centimeters per hour.
Speed of the given object in centimeters per hour
= 0.23 cm / hour
What is unit conversion?Unit conversion is a process with multiple steps that involves multiplication or division by a numerical factor or, particularly a conversion factor. The process may also require selection of the correct number of significant digits, and rounding. Different units of conversion are used to measure different parameters.
Like 1 yard = 91.44 cm
1 month = 730 hrs.
Distance covered by the object = 11 yards
Distance covered in cm = 11 × 91.44 = 1005.84 cm
Time taken to cover 11 yards = 6 months
Time taken in hours = 6 × 730 = 4380 hrs.
Speed of the object = distance covered by the object / Time taken
Speed of the object = 1005.84/4380 = 0.2296 ≈ 0.23 cm per hour
Hence, in centimeters per hour,
the speed of the object is 0.23 cm / hour.
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SEVENTH GRADE ALGEBRA PLS HELP
A group of 5 friends each have x action figures in their collections. Each
friend buys 8 more action figures. Now the 5 friends have a total of 150
action figures.
Write an equation that can be used to find x, the number of action
figures per person.
Answer:
x = 22 (each friend started with 22 action figures)
Step-by-step explanation:
After buying 8 more action figures, each friend has x + 8 action figures. Because there are 5 friends, the new total number of action figures is 5(x + 8), which we are told is equal to 150. Dividing both sides of this equation by 5 yields x + 8 = 30, and subtracting 8 from both sides yields x = 22.
ILL BRAINLIEST YOU PLEASE HELP ME
Answer:
C
Step-by-step explanation:
Hope this helpssss
Yan has already finished Three-fifths of the 45 math problems he was assigned today. Each math problem took him 1Four-fifths of a minute to complete. If this pace continues, how much more time, to the nearest minute, will the rest of the problems take him to finish?
18 minutes
27 minutes
32 minutes
43 minutes
Answer: 32
Step-by-step explanation: 90% of people marry there 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
The time taken to complete the rest questions is 32 minutes
Since Yan has already finished Three-fifths of the 45 math problems he was assigned today. The number remaining will be:
= 45 - (3/5 × 45)
= 45 - 27
= 18
Now, the time taken to complete the rest questions will be:
= 18 × 1 4/5
= 18 × 1.80
= 32.4
= 32 minutes.
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HELP IM BEGGING ON MY KNEES FOR SOMEONE WHO KNOWS WHAT TO DO CAUSE IVE GOTTEN IT WRONG AND IM ALLOWED TO RETAKE IT
Answer:
-3/5
Step-by-step explanation:
from 1st point to second, you go down 3, right 5
In a survey of 170 girls, it was found that 18 girls
can neither dance nor can sing, 96 can dance and
69 can sing. By representing these information in
a Venn-diagram, find the number of girls who
both dance and sing.
Ans: 13
Answer:9
Step-by-step explanation:beacuse if you take 6 by 9 and 10 it will make 2 of 69
Solve the answer please
Answer:
A
Step-by-step explanation:
the exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.
140° is an exterior angle of the triangle , then
∠ B + 90° = 140° ( subtract 90° from both sides )
∠ B = 50°
∠ ACB and ∠ DCB are a linear pair and sum to 180° , that is
∠ ACB + 140° = 180° ( subtract 140° from both sides )
∠ ACB = 40°
PLEASE HELP I will give brainiest Which equation best shows the relationship between x and y? (1 point)
O a
Ob
Oc
Od
y = x + 50
y = 6x + 50
y = 6x + 56
y=x+56
On solving the provided question, we can say that the equation of the expression is given by y = 6x + 50
What is an equation ?Equations with graphs as the unknowns are known as graph equations. The concept of isomorphism is one of the key issues in graph theory. When are two graphs identical, we inquire? Different graph equations may be used to express the aforementioned graphs.
A mathematical statement that has a "equal to" symbol between two expressions with equal values is called an equation. as in 3x + 5 Equals 15, for instance. Equations come in a variety of forms, including linear, quadratic, cubic, and others.
A mathematical expression with an equals sign is referred to as an equation. Algebra is widely used in equations. When performing calculations but unsure of the precise amount, algebra is utilized. A lot of specialists, such as air traffic controllers, architects, computer programmers, and carpenters, employ equations on a daily basis.
From the table we can see that if the equation be
y = mx + c
for x = 0 y = 50
c = 50
again from x = 1 and y = 56
m = 6
So the equation of the expression is given by y = 6x + 50
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