There were 21 quarters, 26 dimes, and 10 nickels in the piggy bank.
What is Quarters?Quarters are a type of coin used as currency in many countries, including the United States, Canada, and Mexico. In the United States, quarters are worth 25 cents each and have a diameter of 0.955 inches (24.26 mm). Quarters feature the image of George Washington, the first president of the United States, on the obverse (front) side, and an eagle on the reverse (back) side.
Let's use variables to represent the number of each type of coin. Let:
q be the number of quarters
d be the number of dimes
n be the number of nickels
From the problem statement, we have the following information:
The total value of the coins is $8.50, so we can write:
0.25q + 0.10d + 0.05n = 8.50
There were twice as many quarters as nickels, so:
q = 2n
There were 5 less quarters than dimes, so:
q = d - 5
We can use the third equation to substitute for q in the first two equations:
2n = d - 5
n = (d - 5)/2
q = d - 5
Now we can substitute these expressions for n and q in the first equation:
0.25(d-5) + 0.10d + 0.05((d-5)/2) = 8.50
Simplifying and solving for d:
0.25d - 1.25 + 0.10d + 0.025d - 0.125 = 8.50
0.375d = 9.875
d = 26.333...
Since we can't have a fraction of a coin, we need to round this to the nearest whole number. We also know that q = d - 5 and n = (d-5)/2, so:
d = 26
q = 21
n = 10
Therefore, there were 21 quarters, 26 dimes, and 10 nickels in the piggy bank.
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in a recent year, 34.8% of all registered doctors were female. if there were 56,500 female registered doctors that year, what was the total number of registered doctors? round answer to whole number.
162,356 doctors were registered that year.
Explanation:
The questions says, "34.8% of all registered doctors are females"
(Consider, total number of registered doctors as [tex]x[/tex])
that's, [tex]34.8\%[/tex] of [tex]x[/tex] are female.
and [tex]34.8\%[/tex] of [tex]x[/tex] is 56,500.
Mathematically,
[tex]\dfrac{34.8}{100} \times x=56500[/tex]
[tex]x=56500\times\dfrac{100}{34.8}[/tex]
[tex]x=162356[/tex] doctors were registered that year.
A chemical injection system tank is 3/4 full and pumps out at a rate of 1/8 of a tank per week. You won't be back for five weeks. How much will be left in the tank when you return? Your answer should be in the form of a fraction reduced to its lowest terms.
does religion cause war
Use a Venn Diagram or Union Rule; and the given information to determine the number of elements in the indicated region.
If n(U) = 103, n(A)= 32, n(B) = 52, n(A ∩ B)=11, n(A ∩ C)=14, n(A ∩ B ∩ C)= 6, n(A' ∩ B ∩ C')=35, n(A' ∩ B' ∩ C')=24
Find n(C)
There are 30 elements in region C.
What is the inclusion-exclusion principle?
The inclusion-exclusion principle is a counting technique used in combinatorics to find the size of a set that is a union of several other sets. It states that the size of the union of two or more sets is equal to the sum of their individual sizes minus the size of their intersection(s).
To find n(C), we can use the inclusion-exclusion principle:
n(A ∪ B ∪ C) = n(A) + n(B) + n(C) - n(A ∩ B) - n(A ∩ C) - n(B ∩ C) + n(A ∩ B ∩ C)
We know that n(U) = 103, so we can use this to find n(B ∩ C) as follows:
n(B ∩ C) = n(B ∪ C) - n(B') = n(U) - n(B' ∩ C') - n(B' ∩ C) - n(B ∩ C') = 103 - 24 - 35 - n(B ∩ C')
Similarly, we can find n(A' ∩ C) and n(A ∩ B' ∩ C) as follows:
n(A' ∩ C) = n(U) - n(A ∪ C') = 103 - n(A) - n(C') + n(A ∩ C') = 103 - 32 - n(C') + 14 = 85 - n(C')
n(A ∩ B' ∩ C) = n(U) - n(A ∪ B' ∪ C') = 103 - n(A ∪ B') - n(C') + n(A ∩ B' ∩ C') = 103 - 69 - n(C') + 6 = 40 - n(C')
Now we can substitute these values into the inclusion-exclusion principle to get:
92 + 52 + n(C) - 11 - 14 - n(B ∩ C) - 32 - (85 - n(C)) - (40 - n(C)) + 6 = n(U)
Simplifying, we get:
n(C) - n(B ∩ C) - 21 = 0
n(C) = n(B ∩ C) + 21
To find n(B ∩ C), we can use the formula we derived earlier:
n(B ∩ C) = 103 - 24 - 35 - n(B ∩ C')
n(B ∩ C') = n(U) - n(B' ∪ C') = n(U) - n(B') - n(C') + n(B' ∩ C') = 103 - 52 - n(C') + 24 = 75 - n(C')
Substituting this into the equation for n(B ∩ C), we get:
n(B ∩ C) = 103 - 24 - 35 - (75 - n(C))
n(B ∩ C) = 39 - n(C)
Now we can substitute this into the equation for n(C) to get:
n(C) = (39 - n(C)) + 21
2n(C) = 60
n(C) = 30
Therefore, there are 30 elements in region C.
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Select the statement that is not true.
A. The reflection of a line is a pair of parallel lines.
B. The translation of a line is a line.
C. The rotation of a line is a line.
D. The rotation of a pair of parallel lines is a pair of parallel lines.
The claim that a line's reflection is actually two parallel lines is false. correct answer is option (A).
Why is the statement a false statement?A line is reflected by another line, which is the original line's mirror image. Each point on the original line is reflected across a line of reflection, which is often perpendicular to the original line, to create the mirror image. The resulting line is consistent with the original line while being oriented in the other direction.
The statement that a line can be translated into another line with the same length and that it is parallel to the original line is true.
The statement that a line rotates into another line that is the same length and shape as the original line but is orientated at a different angle is also correct.
The rotation of a pair of parallel lines is also valid for a second pair of parallel lines that have the same distance between them but are orientated at a different angle from the initial pair.
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the product of a number and -6 amounts to five times the sum of that number and 33. Find the number.
By setting up the equation and solving for the unknown variable, we find that the number in question is -15. The answer provides a step-by-step method for solving an equation that represents a word problem.
Let's start by translating the given problem into an equation.
"The product of a number and -6" can be written as "-6x", where "x" is the unknown number. "Five times the sum of that number and 33" can be written as "5(x+33)".
Putting these together, we get:
-6x = 5(x+33)
Now we can solve for "x":
-6x = 5x + 165
-11x = 165
x = -15
Therefore, the number we're looking for is -15.
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Donna and Kayleigh both go to the same high school. Donna lives 21 miles from the school.
Kayleigh lives 6 miles from Donna.
Part A. Write an absolute value equation to represent the location of Kayleigh's house in
relation to the high school.
Part B. How far could Kayleigh live from her school?
The absolute value equation for Kayleigh's location in relation to the high school is |21 - d| = 6. By solving this equation, we find that Kayleigh could live either 15 miles or 27 miles away from the school.
Explanation:Part A: The absolute value equation would represent the distance between Kayleigh's house and the high school, which can either be closer or further away from the school compared to Donna's house. Given that Donna lives 21 miles from school, and Kayleigh lives 6 miles away from Donna, we can set an equation to indicate all possible locations of Kayleigh's home. The equation would be |21 - d| = 6, where 'd' represents the distance from Kayleigh's house to the high school.
Part B: To understand how far Kayleigh could live from her school, solve the equation above for 'd', you get two solutions: 21 - 6 = 15 miles and 21 + 6 = 27 miles. Therefore, Kayleigh could either live 15 miles or 27 miles away from the school.
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a group of private investors purchased a condominium complex for $5 million. they made an initial down payment of 15% and obtained financing for the balance. if the loan is to be amortized over 11 years at an interest rate of 9.1%/year compounded quarterly, find the required quarterly payment. (round your answer to the nearest cent.)
With the given compound interest, the required quarterly payment is $38,745.74.
What is Compound interest?
Compound interest is the interest that is calculated on the initial principal as well as the accumulated interest of previous periods. In other words, it is the interest on interest. The interest is added to the principal at the end of each compounding period, and then the new total amount becomes the principal for the next period's interest calculation.
Now,
The amount financed is equal to the purchase price minus the down payment:
Amount financed = $5,000,000 - 0.15($5,000,000) = $4,250,000
To find the quarterly payment,
PV = Pmt * (1 - (1 + r)⁻ⁿ) / r
where PV is the present value (amount financed), Pmt is the quarterly payment, r is the quarterly interest rate, and n is the total number of quarterly payments (11 years x 4 quarters/year = 44 quarters).
The quarterly interest rate is equal to the annual interest rate divided by 4:
r = 0.091 / 4 = 0.02275
Substituting the values, we get:
$4,250,000 = Pmt * (1 - (1 + 0.02275)⁻⁴⁴) / 0.02275
Solving for Pmt, we get:
Pmt = $38,745.74
Therefore, the required quarterly payment is $38,745.74 (rounded to the nearest cent).
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Given the triangle below, find the angle θ.
Give your answer in radians rounded to four decimal places.
By using the trigonometric identities we get ∅ = 0.5542.
What are the trigonometric identities?The six trigonometric ratios serve as the foundation for all trigonometric equations. Sine, cosine, tangent, cosecant, secant, and cotangent are some of their names. The sides of the right triangle, such as the adjacent side, opposite side, and hypotenuse side, are used to describe each of these trigonometric ratios.
The given figure is a right-angled triangle.
We can use trigonometric identities,
Sin∅ =[tex]\frac{adjacent }{hypotenuse}[/tex]
Here we get the value adjacent = 10 and the hypotenuse = 19
Therefore we get the value,
sin∅ = [tex]\frac{10}{19}[/tex] = 0.5263
∅ = [tex]sin^{-1} (0.5263)[/tex]
∅ = 0.5542
Therefore the angle ∅ = 0.5542
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Triangle LMN is shown below. What is the length of LM?
Option D is the correct answer, As a result, LM is 16.1 centimeters long.
The mid-segment of a triangle is aligned to the base and is half the length of the triangle.
MQ = therefore 1/2 LN.
LN = 16.1 centimeters because we know MQ = 8 cm.
MQ is parallel to side LM and half of its length because it is also the midpoint of the triangular LMN.
What exactly is midsegment?A line segment linking the midpoints of two of the triangle's sides is known as a mid-segment. It is half the length of the triangle's third edge and parallel to it. In other words, the mid-segment linking the midpoints of sides a and b has length c/2 and is parallel to side c if a triangle has sides of lengths a, b, and c.
Because of this, LM = 2MQ = 16.1 centimeters.
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The table gives the number of cellular telephone subscribers in a country (in thousands) from 2007 through 2012. Find the average annual rate of change during this time period.
The average annual rate of change during the time period 2007-2012 is
I Need help ASAP!!!!!!
The average annual rate of change during the time period 2007-2012 is approximately 10,797 thousand subscribers per year.
What is rate of change?The rate of change function is defined as the rate at which one quantity is changing with respect to another quantity. In simple terms, in the rate of change, the amount of change in one item is divided by the corresponding amount of change in another.
Equation:To find the average annual rate of change for this time period, we need to determine the total change in the number of cellular telephone subscribers from 2007 to 2012, and then divide by the number of years in the time period.
The total change in the number of subscribers from 2007 to 2012 is:
335,244 - 270,461 = 64,783
The number of years in the time period is:
2012 - 2007 + 1 = 6
So the average annual rate of change is:
64,783 / 6 = 10,797.17 (rounded to two decimal places)
If we round the average annual rate of change to the nearest unit, it would be 10,797 subscribers per year.
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A group of 500 middle school students were randomly selected and asked about their preferred frozen yogurt flavor. A circle graph was created from the data collected.
a circle graph titled preferred frozen yogurt flavor with five sections labeled Dutch chocolate 21.5 percent, country vanilla 28.5 percent, sweet coconut, espresso 10 percent, and cake batter 27 percent
How many middle school students preferred sweet coconut-flavored frozen yogurt?
130
65
31
13
Answer:
13%
Step-by-step explanation:
I have a test on this an i'm missing Cake batter. But I have sweet coconut and it says its 13%.
I NEEEED THE ANSWER PLS.The graph f(x) = x2 is shown on the grid. If Jeffrey transforms the graph to create b(x) = f(x - 8), which statement about the graphs will is true?
In parabola, the vertex of b(x) is 8 units to the right of the vertex of .
What is parabola in math?
A parabola is a U-shaped plane curve in which every point is situated at an equal distance from both the focus, a fixed point, and the directrix, a fixed line. All of the parabola-related ideas are discussed here since it is a crucial component of the conic section subject. When f(x)=ax² +bx +c, where a, b, and c are real integers and a0, the function is said to be quadratic.
f(x) = x²
b(x) = f(x - 8)
f(x) = x²
f(x- 8) = (x- 8)²
f(X-8) = x² - 16x + 64
b(X) = f(x- 8) = x² - 16x + 64
Comparing b(X) = x² - 16x + 64 with y = ax² + bx + c
a = 1, b = -16 , c = 64
-b/2a = 8 ...........1
Hence, the x-coordinate of vertex is 8.
putting x = 8 in b(x)
b(8) = 8² - 16 * 8 + 64 = 0
So, the vertex of b(x) is (8,0)
Comparing f(x) = x² with y = ax² +bx+c
a = 1 , b= 0 , c = 0
-b/2a = 0 .........2
Hence, the x-coordinate of vertex is 0.
putting x = 0 in f(X)
f(0) = 0² = 0
So, the vertex of f(x) = (0,0)
Thus, the vertex of b(x) is 8 units to the right of the vertex of .
(Option A is false.)
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Please, write the equation in the attachment in standard form.
Answer: No Solutions
Step-by-step explanation:
The square root of -125 if undefined
Therefore, the answer in no solutions
Find the value of x. If necessary, round your answer to the nearest tenth. The figures are not drawn to scale.
AB = 16, BC = 8, and CD = 9
The value of x cannot be determined and the answer is undefined.
To find the value of x in this scenario, we can use the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides.
In this case, triangle ABC is a right triangle with AB as the hypotenuse. So, we can use the Pythagorean theorem to solve for AC, which is equal to the square root of (AB^2 - BC^2).
Using the given values, we have:
AC = sqrt(16^2 - 8^2)
AC = sqrt(256 - 64)
AC = sqrt(192)
AC ≈ 13.86
Now, we can use triangle ACD to solve for x. This triangle is also a right triangle with CD as the hypotenuse. So, we can use the Pythagorean theorem again to solve for AD, which is equal to the square root of (CD^2 - AC^2).
Using the given values, we have:
AD = sqrt(9^2 - 13.86^2)
AD = sqrt(81 - 192.23)
AD = sqrt(-111.23)
We can't take the square root of a negative number, so there is no real solution for x in this scenario.
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Mary visits the local coffee shop to use the WiFi for school projects. Mary has an English book review to write, a social studies paper, and a science presentation to complete. They first arrive and order a coffee at $2.15 and tip 5% at the counter. Two hours later, they finish their English review and the waitress stops by. Mary decides to order a latte at $4.50but doesn't tip. Over the next hour, the waitress returns and Mary orders another coffee and leaves a 15% tip for both the latte and coffee. An hour later, Mary completes all of their projects and leaves.
What is the total tip Mary left at the coffee shop? Round the price to the nearest hundredth. Do not include $ in your answer. For example, if the price is $19.546, enter 19.55.
the total tip left by Mary at the coffee shop is $0.11 + $0.99 = $1.10 (rounded to the nearest hundredth).
Why is it?
Let's break down the transactions and calculate the total tip left by Mary.
Mary orders a coffee at $2.15 and tips 5% at the counter:
Cost of coffee = $2.15
Tip = 0.05 x $2.15 = $0.11
Mary orders a latte at $4.50 and doesn't tip:
Cost of latte = $4.50
Mary orders another coffee at $2.15 and leaves a 15% tip for both the latte and coffee:
Cost of coffee = $2.15
Total cost of latte and coffee = $4.50 + $2.15 = $6.65
Tip = 0.15 x $6.65 = $0.99
Therefore, the total tip left by Mary at the coffee shop is $0.11 + $0.99 = $1.10 (rounded to the nearest hundredth).
A tip is an extra amount of money given as a gratuity or a gift to someone for their services, such as for a meal in a restaurant, a hairdresser, or a taxi driver. Tips are typically a percentage of the total cost of the service or goods provided.
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PLEASE HELP!!! DUE TODAY
in PQR, what is m
Answer:
B.
Step-by-step explanation:
I hope this is what you needed. =)
Find the sum or difference. Write your answer in standard form.
(m2−m)+(2m+m2)
The standard form of the expression is 2m² + m.
What is standard form formula?The standard form is referred to as the general way of representing any type of notation. The standard form formula represents the standard form of an equation which is the commonly accepted form of an equation. For example - The standard form of a polynomial is to write the terms with a higher degree first (descending order of degree) and its coefficients must be in integral form.
Equation:Combining like terms, we get:
(m² - m) + (2m + m²) = m² + m² - m + 2m
Simplifying further, we get:
2m² + m
Therefore, the sum of the given expressions is 2m² + m.
To write the answer in standard form, we arrange the terms in descending order of degree of the variable:
2m² + m = 2m² + 1m¹ + 0m⁰
So the standard form of the expression is 2m² + m.
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2m^2+4m-8=0
1. Up or down ?
2. Maximum or minimum?
3. What is the x- intersect?
4. X= -b/2(a) = ?
5. What is the vertex?
6. What is the y- intersect?
Armando realiza un trabajo en 20 segundos y Bernardo realiza el mismo trabajo en dos segundos como le llamarías a la magnitud física que determina la diferencia entre uno y otro
La magnitud física que determina que un trabajador haga el trabajo en un tiempo menor que otro puede ser la RAPIDEZ.
determina la diferencia entre uno y otro?La rapidez o también velocidad (si hablamos de vector) define porque un trabajador realiza un trabajo en 20 segundos y el otro en 12 segundos, significa que el primero es menos rápido que el segundo.
De cierta manera pudieran estar otras magnitudes relacionadas como la potencia.
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Choose all of the expressions that are equal to 61.
a. |−61|
b. the distance from zero to −61
c. the opposite of 61
d. −(−61)
e. the opposite of −61
f. −|−61|
g. −|61|
Answer:
a mode of negative number again gives the positive value
d. -(-61) =61 by multiplication sign rule
e. opposite of -61 =61
Answer: e
Step-by-step explanation:
the opposite is 61
You need to staff your next banquet for 5 hours with the following personnel 14 servers 5 bartenders 4 hosts and 2 banquet captains. Captains are paid 60% more than the 17 per hour for the rest of the staff what is your total payroll for banquet
Hence, the banquet's overall payroll came to $1,495 as the number of captains by their pay rate, and the number of hours worked.
what is unitary method ?We must first determine the rate of pay for each group of employees before multiplying that number by the total number of employees for the dinner. The pay rate for captains is as follows because they are paid 60% above the rest of the staff: Compensation for captains is $17 per hour plus 60% of that amount, or $17 plus $10.20, for a total hourly wage of $27.20. The pay rate for the remaining employees is: $17 per hour is the pay rate for waitresses, bartenders, and hosts. Now, we can determine the banquet's overall payroll using the formula below.
given
We must first determine the pay rate for each group of employees before multiplying that number by the total number of employees for the dinner.
The pay rate for captains is as follows because they are paid 60% more than the rest of the staff:
Compensation for captains is $17 per hour plus 60% of that amount, or $17 plus $10.20, for a total hourly wage of $27.20.
The pay rate for the remaining employees is:
$17 per hour is the pay rate for servers, bartenders, and hosts.
Now, we can determine the banquet's overall payroll using the formula below:
Total payroll is calculated by multiplying the number of servers by their pay rate, the number of bartenders by their pay rate, the number of hosts by their pay rate, the number of captains by their pay rate, and the number of hours worked.
Total payroll is (14 x $17) plus (5 x $17) plus (4 x $17) plus (2 x $27.20) x 5 = $238 plus $85 plus $68 plus $272 x 5
Total compensation: $1,495
Hence, the banquet's overall payroll came to $1,495 as the number of captains by their pay rate, and the number of hours worked.
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5. Use the formula
A = ¹h(b₁ + b₂) to
find the area of the
trapezoid.
The area of the
trapezoid is
9 cm
3 cm
5 cm
-1.5 cm
21
27 square centimeters.
29.3
The area of the trapezoid [tex]36^{2}[/tex] centimeters
To use the formula A = ¹h(b₁ + b₂) to find the area of a trapezoid, you need to know the height (h) and the lengths of the two parallel bases (b₁ and b₂).
For example,
The formula for finding the area of a trapezoid is A = ¹h(b₁ + b₂),
Where A represents the area of the trapezoid, h represents the height, and b₁ and b₂ represent the lengths of the two parallel bases.
By plugging in the given values for the height and bases and performing the necessary arithmetic operations, you can find the area of the trapezoid.
It's important to remember to use the correct units and follow the order of operations to obtain the correct result.
If the height of the trapezoid is 9 cm, the lengths of the two bases are 3 cm and 5 cm, you can plug these values into the formula to find the area :
A = ¹h(b₁ + b₂)
= ¹(9)(3 + 5)
= ¹(9)(8)
= 36 square centimeters
So, the area of this trapezoid is 36 square centimeters.
If you have different values for the height and bases, you can use the same formula to find the area.
Just make sure to use the correct units and follow the order of operations (parentheses first, then multiplication and division, then addition and subtraction).
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Solve the exponential equation for x. 3^3x-2 = 9^4x-1 x=
The solution of the exponential equation 3^(3x-2) = 9^(4x-1) is x = 0.
We can solve this exponential equation for x by using logarithms. We can take the logarithm of both sides of the equation, using any base that we prefer. For instance, we can use the natural logarithm, ln:
ln(3^(3x - 2)) = ln(9^(4x - 1))
Now, we can use the properties of logarithms to simplify both sides of the equation. First, recall that ln(a^b) = b ln(a), for any positive value of a and any real value of b. Therefore, we have:
(3x - 2) ln(3) = (4x - 1) ln(9)
Next, we can use another property of logarithms, namely ln(a^b) = b ln(a) = ln(c) → a^b = c, to eliminate the natural logarithms from both sides of the equation. Specifically, we can rewrite ln(9) as ln(3^2), and then use the power rule for logarithms, ln(a^b) = b ln(a), to get:
(3x - 2) ln(3) = (4x - 1) ln(3^2) = 2 (4x - 1) ln(3)
Now, we can simplify the equation by multiplying out the coefficients of ln(3) on the left-hand side:
3x ln(3) - 2 ln(3) = 8x ln(3) - 2 ln(3)
Then, we can collect like terms:
3x ln(3) - 8x ln(3) = -2 ln(3) + 2 ln(3)
Finally, we can solve for x by factoring out ln(3) and dividing both sides by the resulting factor:
(3 ln(3) - 8 ln(3)) x = 0
-5 ln(3) x = 0
x = 0
Therefore, the solution of the exponential equation 3^(3x-2) = 9^(4x-1) is x = 0.
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A science teacher needs up to 15 female and male students for a competition. The science teacher needs at least 6 male volunteers.
Let x represent the number of male volunteers and y represent the number of female volunteers.
Which inequalities model the situation?
The situation can be modeled by the following system of linear inequalities:
x ≥ 6 (The number of male volunteers should be at least 6)
x + y ≤ 15 (The total number of volunteers should be no more than 15)
y ≥ 0 (The number of female volunteers should be non-negative)
What is inequality model?
A formula exists for inequality. Less than, larger than, or not equal are used in place of the equal sign when there are inequalities. Rules for resolving disparities are unique. Here are a few examples of inequalities that are mentioned. When disparities are connected, the centre inequality can be jumped over.
The situation can be modeled by the following system of linear inequalities:
x ≥ 6 (The number of male volunteers should be at least 6)
x + y ≤ 15 (The total number of volunteers should be no more than 15)
y ≥ 0 (The number of female volunteers should be non-negative)
Explanation:
The first inequality states that the number of male volunteers, represented by x, should be greater than or equal to 6. This ensures that the science teacher has at least 6 male volunteers.
The second inequality states that the total number of volunteers, represented by x + y, should be no more than 15. This ensures that the science teacher does not exceed the maximum number of volunteers required for the competition.
The third inequality states that the number of female volunteers, represented by y, should be non-negative. This ensures that there are no negative values for the number of female volunteers.
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Calculate.
9×10²
2×10²
Write your answer in scientific notation.
0
X
Answer: 4.5×10^0
Step-by-step explanation:
To calculate 9×10²/2×10², you can follow these steps:
Step 1: Simplify the expression by cancelling out the common terms:
9×10²/2×10² = (9/2)×(10²/10²)
Step 2: The 10² terms cancel each other out:
(9/2)×(10²/10²) = (9/2)×1 = 9/2
Step 3: Convert the simplified expression to scientific notation:
9/2 = 4.5, so the expression in scientific notation is 4.5×10^0 (since any number raised to the power of 0 is 1).
The result of the calculation is 4.5×10^0.
2. The base of a triangular prism is an equilateral triangle with sides 20 inches long. The height of the prism is 8 inches. Find the volume of the prism.
Answer:
The volume of the prism is 800(sqrt(3)) cubic inches.
Step-by-step explanation:
The volume of a triangular prism can be calculated by multiplying the area of the base (which is an equilateral triangle in this case) by the height of the prism.The area of an equilateral triangle can be calculated using the formula:A = (sqrt(3)/4) x s^2where A is the area and s is the length of one side of the triangle.In this case, the length of one side of the equilateral triangle is 20 inches, so we can substitute that into the formula:A = (sqrt(3)/4) x 20^2
A = (sqrt(3)/4) x 400
A = 100(sqrt(3)) square inchesNow that we have the area of the base, we can calculate the volume of the prism:V = A x h
V = 100(sqrt(3)) x 8
V = 800(sqrt(3)) cubic inches
To find the volume of a triangular prism, one must calculate the area of the base (in this case an equilateral triangle), and then multiply this by the height of the prism. Using the provided dimensions, the volume is calculated to be 800√3 cubic inches.
Explanation:The question is asking us to find the volume of a triangular prism with an equilateral triangle as the base and a given height. The formula for the volume of a prism is Volume = Base Area * Height. Since the base is an equilateral triangle, its area can be calculated using the formula: Area = (sqrt(3) / 4) * side². By substituting the given side length of 20 inches, we find that the area of the base is sqrt(3) * 100 square inches. We then multiply this by the height of the prism, which is 8 inches, to find the total volume. So, the volume of the prism is 800√3 cubic inches.
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Ahmed and Tiana buy a cake for $14 that is half chocolate and half vanilla. They cut the cake into 8 slices. If Ahmed likes chocolate four times as much as vanilla, what is the dollar value that Ahmed places on a chocolate slice?
The dollar value, if Ahmed likes 4 times more the chocolate than the vanilla slice, then he finds C four times more valuable than V. Thus, Ahmed placed a chocolate slice is $1.75.
What is meant by arithmetic?The foundational subject in mathematics, arithmetic covers operations with numbers. They include addition, subtraction, multiplication, and division. One of the major branches of mathematics, arithmetic serves as the cornerstone for students studying the subject of mathematics. Mathematical arithmetic is the study of the characteristics of the conventional operations on numbers.
Using C for the chocolate slice's value and V for the vanilla slice's value
4 slices × C + 4 slices × V = $14
If Ahmed likes 4 times more the chocolate than the vanilla slice, then he finds C four times more valuable than V, thus
C = 4×V
4 slices ×4V + 4 slices ×V = $24
20 slices ×P = $14
P=$0.7/slice
V= 4×P = 4×$0.7/slice = $2.8/slice
Thus for a slice that is half chocolate and half vanilla
value= 1/2 slice× C + 1/2 slice × V
= 1/2 slice ( $0.7 /slice + $2.8/slice)
= $1.75
Hence, Ahmed placed a chocolate slice is $1.75.
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Given that a function, g, has a domain of -1 ≤ x ≤ 4 and a range of 0 ≤ g(x) ≤ 18 and that g(-1) = 2 and g(2) = 8, select the statement that could be true for g. HEEEELP
Answer:
The answer to your problem is, g(3) = 18
Step-by-step explanation:
Given that the function, g, has a domain of -1 ≤ x ≤ 4 and a range of - 0 ≤ g(x) ≤ 18 and that g(-1) = 2 and g(2) = 8
Listed in order 1 - 4
The value(s) of x must be between -1 and 4The values of g(x) must be between 0 and 18.g(-1)=2g(2)=9A. The value of x=5. This contradicts property 1 stated above. Therefore, it is not true.
B. The value of g(x)=-2. This contradicts property 2 stated above. Therefore, it is not true.
C. The value of g(2)=4. However by property 4 stated above, g(2)=9. Therefore, it is not true.
D. This statement can be true as its domain is in between -1 and 4 and its range is in between 0 and 18.
Thus the answer to your problem is, D. g(3) = 18
Sorry for the blurry picture!
find an angle theta that makes the statement true use cofunction identity
cot(5theta - 32 degree)=tan(theta + 26 degrees)
Answer: Using the cofunction identity for tangent and cotangent:
cot(θ) = 1/tan(θ)
We can rewrite the given equation as:
cot(5θ - 32°) = 1/tan(θ + 26°)
Next, using the identity for the tangent of the sum of two angles:
tan(a + b) = (tan(a) + tan(b))/(1 - tan(a)tan(b))
We can rewrite the right side of the equation as:
1/tan(θ + 26°) = tan(90° - (θ + 26°)) = tan(64° - θ)
Substituting this back into the original equation:
cot(5θ - 32°) = tan(64° - θ)
Using the identity for the cotangent and tangent of the difference of two angles:
cot(a - b) = (cot(a)cot(b) - 1)/(cot(b) - cot(a))
tan(a - b) = (tan(a) - tan(b))/(1 + tan(a)tan(b))
We can rewrite the equation as:
(cot(5θ)cot(32°) - 1)/(cot(32°) - cot(5θ)) = (tan(64°)tan(θ) - tan(θ))/(1 + tan(64°)tan(θ))
Simplifying both sides:
(cot(5θ)cot(32°) - 1)/(cot(32°) - cot(5θ)) = (sin(64°)sin(θ))/(cos(64°)cos(θ) + sin(64°)sin(θ))
Cross-multiplying and simplifying:
cos(64°)cos(θ)cot(5θ) - sin(64°)sin(θ)cot(5θ) = -sin(64°)sin(θ)
cos(64°)cos(θ)cot(5θ) = sin(64°)sin(θ)(cot(5θ) + 1)
cos(64°)cos(θ)cot(5θ) = sin(64°)sin(θ)csc(5θ)
cos(64°)cos(θ) = sin(64°)sin(θ)sin(5θ)/cos(5θ)
cos(64°)cos(θ)cos(5θ) = sin(64°)sin(θ)sin(5θ)
Using the identity for the cosine of the sum of two angles:
cos(a + b) = cos(a)cos(b) - sin(a)sin(b)
We can rewrite the equation as:
cos(64° + θ - 5θ) = 0
cos(64° - 4θ) = 0
64° - 4θ = 90° + k(180°) or 64° - 4θ = 270° + k(180°) where k is an integer
Solving for θ:
64° - 4θ = 90° + k(180°)
-4θ = 26° + k(180°)
θ = -(26°/4) - (k/4)(180°)
θ = -6.5° - 45°k
or
64° - 4θ = 270° + k(180°)
-4θ = 206° + k(180°)
θ = -(206°/4) - (k/4)(180°)
θ = -51.5° - 45°k
Therefore, there are two sets of solutions for θ, given by:
θ = -6.5
Step-by-step explanation: