Answer:
ye
Step-by-step explanation:
sorry!
Match the graph to its equation.
Answer: First one is A, 2nd one is B, 3rd one is C
Step-by-step explanation:
(2) (20 points) For each of the following utility functions find the Marginal Rate of Substitution (MRS) (a) u(x
a
,x
b
)=x
a
1/2
x
b
1/2
(b) u(x,y)=x
3/4
y
1/4
(c) u(x
a
,x
b
)=
2
1
ln(x
a
)+
2
1
ln(x
b
) (d) u(x,y)=
4
3
ln(x)+
4
1
ln(y) (e) u(x
a
,x
b
)=2x
a
+x
b
The Marginal Rate of Substitution (MRS) for each utility function is:
(a) MRS = xb/xa
(b) MRS = 3y/x
(c) MRS = xa/xb
(d) MRS = y/x
(e) MRS = 2
To locate the Marginal Rate of Substitution (MRS) for every software function, we want to calculate the partial derivatives with recognition to the variables concerned. Let's decide the MRS for each feature:
(a) u(xa, xb) = \(xa^(1/2) * xb^(1/2)\)
MRS = ∂u/∂xa / ∂u/∂xb
= (∂/∂xa \((xa^(1/2) * xb^(1/2))\)) / (∂/∂xb \((xa^(1/2) * xb^(1/2))\))
= \((1/2 * xa^(-1/2) * xb^(1/2)) / (1/2 * xa^(1/2) * xb^(-1/2))\)
= xb/xa
(b) u(x, y) = \(x^(3/4) * y^(1/4)\)
MRS = ∂u/∂x / ∂u/∂y
= (∂/∂x \((x^(3/4) * y^(1/4)))\) / (∂/∂y \((x^(3/4) * y^(1/4))\))
=\((3/4 * x^(-1/4) * y^(1/4)) / (1/4 * x^(3/4) * y^(-3/4))\)
= 3y/x
(c) u(xa, xb) = (1/2) * ln(xa) + (1/2) * ln(xb)
MRS = ∂u/∂xa / ∂u/∂xb
= (∂/∂xa [(1/2) * ln(xa) + (1/2) * ln(xb)]) / (∂/∂xb [(1/2) * ln(xa) + (1/2) * ln(xb)])
= (1/2) * (1/xa) / (1/2) * (1/xb)
= xa/xb
(d) u(x, y) = (4/3) * ln(x) + (4/1) * ln(y)
MRS = ∂u/∂x / ∂u/∂y
= (∂/∂x [(4/3) * ln(x) + (4/1) * ln(y)]) / (∂/∂y [(4/3) * ln(x) + (4/1) * ln(y)])
= (4/3) * (1/x) / (4/1) * (1/y)
= y/x
(e) u(xa, xb) = 2 * xa + xb
MRS = ∂u/∂xa / ∂u/∂xb
= (∂/∂xa (2 * xa + xb)) / (∂/∂xb (2 * xa + xb))
= 2 / 1
= 2
Therefore, the Marginal Rate of Substitution (MRS) for every utility characteristic is:
(a) MRS = xb/xa
(b) MRS = 3y/x
(c) MRS = xa/xb
(d) MRS = y/x
(e) MRS = 2
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(a) The MRS for this utility function is √(xb / xa).
(b) The MRS for this utility function is 3 *\((y / x)^(0.25).\)
(c) The MRS for this utility function is xb / xa.
(d) The MRS for this utility function is y / x.
(e) The MRS for this utility function is 2.
To find the Marginal Rate of Substitution (MRS) for each utility function, we need to calculate the ratio of the marginal utilities of the two goods.
The MRS represents the rate at which a consumer is willing to trade one good for another while maintaining the same level of utility.
(a) \(u(xa, xb) = xa^(1/2) * xb^(1/2)\)
To find the MRS, we calculate the partial derivatives of the utility function with respect to each good and take the ratio:
MRS = (d(u(xa, xb))/d(xa)) / (d(u(xa, xb))/d(xb))
= \((0.5 * xb^0.5 * xa^(-0.5)) / (0.5 * xa^0.5 * xb^(-0.5))\)
=\((xb^0.5) / (xa^0.5)\)
= √(xb / xa)
Therefore, the MRS for this utility function is √(xb / xa).
(b) u(x, y) = \(x^(3/4) * y^(1/4)\)
MRS = (d(u(x, y))/d(x)) / (d(u(x, y))/d(y))
= \((0.75 * x^(-0.25) * y^(0.25)) / (0.25 * x^(0.75) * y^(-0.75))\)
= \((3 * y^(0.25)) / (x^(0.25) * y^(-0.75))\)
= \(3 * (y / x)^(0.25)\)
Therefore, the MRS for this utility function is 3 * \((y / x)^(0.25).\)
(c) u(xa, xb) = (1/2) * ln(xa) + (1/2) * ln(xb)
MRS = (d(u(xa, xb))/d(xa)) / (d(u(xa, xb))/d(xb))
= [(1/2) * (1/xa)] / [(1/2) * (1/xb)]
= xb / xa
Therefore, the MRS for this utility function is xb / xa.
(d) u(x, y) = (4/3) * ln(x) + (4/1) * ln(y)
MRS = (d(u(x, y))/d(x)) / (d(u(x, y))/d(y))
= [(4/3) * (1/x)] / [(4/1) * (1/y)]
= y / x
Therefore, the MRS for this utility function is y / x.
(e) u(xa, xb) = 2 * xa + xb
MRS = (d(u(xa, xb))/d(xa)) / (d(u(xa, xb))/d(xb))
= 2 / 1
= 2
Therefore, the MRS for this utility function is 2.
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Calculate the area of each triangle: 1.cm 6 cm h 10 cm 7 cm 8 cm 8 cm d 12.5 cm 9 cm
d=?
d=12.5×9
=112.5
c=?
8*8
=64
b=?
10×7
find the volume of the cylinder
Area of base:
3 * 9 = 27
27*9 = 243So, 243 is the answer.
Given: F(x)=x+2 and G(x)=3x+5
(F - G) (x) = ?
4
-3x-3
-3x-3
What is the slope and y intercept
PLEASE HELPP HHH
Answer:
slope: -1/2
y intercept: -1
Find the volume of each cylinder. Which cylinder has the greater volume? Use 3.14 for π and round your answers to the nearest hundredth.
Two cylinders. The circumference of the base of cylinder A is 3 meters and the height of the cylinder is 5 meters. The circumference of the base of cylinder B is 5 meters and the height of the cylinder is 3 meters.
Answer:
cylinder A is 141.3 meters
cylinder b is 245.5 meters
Step-by-step explanation:
Cylinder a: 3x3x5x3.14
cylinder B : 5x5x3x3.14
Leah would like to earn at least $120 per month. She babysits for $5 an hour and works at an ice cream shop for $10 per hour. Let x represent the hours she number of hours she babysits and y represent the hours she works at the ice cream shop.
This question is incomplete
Complete Question
Leah would like to earn at least $120 per month. She babysits for $5 per hour and works at an ice cream shop for $10 per hour. Leah cannot work more than a total of 20 hours per month. Let x represent the number of hours Leah babysits and let y
represent the number of hours Leah works at the ice cream shop.
Answer:
The inequalities to solve this question is given as:
x + y ≤ 20
5x + 10y ≥ 120
Leah must spend: 16 hours babysitting and 4 hours working at the ice cream shop to earn at least $120
Step-by-step explanation:
Let x represent the hours she number of hours she babysits and y represent the hours she works at the ice cream shop. Leah cannot work more than a total of 20 hours per month.
Hence:
x + y ≤ 20 ...... Equation 1
Leah would like to earn at least $120 per month.
She babysits for $5 an hour and works at an ice cream shop for $10 per hour.
Hence, out Equation is given as:
x × $5 + y × $10 = $120
5x + 10y ≥ 120..... Equation 2
The inequalities to solve this question is given as:
x + y ≤ 20
5x + 10y ≥ 120
To find x and y:
x + y = 20
x = 20 - y
5x + 10y = 120
Substitute: 20 - y for x
5(20 - y) + 10y = 120
100 - 5y + 10y = 120
Collect like terms
- 5y + 10y = 120 - 100
5y = 20
y = 20/5
y = 4 hours
Note:
x = 20 - y
x = 20 - 4
x = 16 hours
Hence:
Leah must spend: 16 hours babysitting and 4 hours working at the ice cream shop to earn at least $120
A rive is 10 ft wide.Two boats start to move towards each other from opposite river banks.In one minute the first boat goes 2 feet and the second one goes 1 foot.What would be the distance between the boats after 1 minute?
Answer:
The distance between the boats after 1 minute is 17 ft
Step-by-step explanation:
Here, we want to calculate the distance between the boats after 1 minute
The distance covered by the first boat after 1 minute is 2 feet while for the second it is 1 foot
So for the first boat, it has 8 ft ahead, for the second boat, it has 9 ft ahead
So the distance between the two after 1 minute will be 9 ft + 8 ft = 17 ft
What are the steps to solving the equation: -3w+9= -12
Answer:
Simplify each side of the equation by removing parentheses and combining like terms.
Use addition or subtraction to isolate the variable term on one side of the equation.
Use multiplication or division to solve for the variable.
Step-by-step explanation:
Answer:
Solution
= −7
Step-by-step explanation:
3 + 9 = − 12
3 + 9 − 9 = − 12 − 9
Subtract the numbers
Subtract the numbers
3 = − 21
Divide both sides of the equation by the same term
3 = − 21
3/3 = −21/3
Solution
= −7
Find an
equation for the perpendicular bisector of the line segment whose endpoints
are (-1, -2) and (-5,4).
Answer:
\(y=\frac{2}{3}x+3\)
Step-by-step explanation:
Perpendicular Bisector
It's defined as a line that divides another line into two equal parts. The bisector passes through the midpoint of the line forming any angle, but if that angle is exactly 90°, then the bisector is also perpendicular.
We need to find the equation of the line that divides into equal parts the line with endpoints (-1, -2) and (-5,4) and is perpendicular to it.
First, let's find the slope of the line segment. The slope can be calculated with the formula:
\(\displaystyle m=\frac{y_2-y_1}{x_2-x_1}\)
\(\displaystyle m=\frac{4-(-2)}{-5-(-1)}=\frac{6}{-4}=-\frac{3}{2}\)
The line for the perpendicular bisector has a slope m2. Two perpendicular lines with slopes m1 and m2 must comply:
\(m_1.m_2=-1\)
Solving for m2:
\(\displaystyle m_2=-\frac{1}{m_1}\)
\(\displaystyle m_2=-\frac{1}{-\frac{3}{2}}=\frac{2}{3}\)
The equation of the perpendicular bisector has the form:
\(y=\frac{2}{3}x+b\)
Now we find the coordinates of the midpoint of the segment:
\(\displaystyle \bar x=\frac{-1-5}{2}=-3\)
\(\displaystyle \bar y=\frac{4-2}{2}=1\)
The midpoint is (-3,1). Using this point will allow us to find the value of b:
\(1=\frac{2}{3}(-3)+b\)
\(b=1+2=3\)
Thus, the equation for the perpendicular bisector is
\(\boxed{y=\frac{2}{3}x+3}\)
PLease Help me!!!! 30 Points If you can answer this!!!
Answer:
5\(\sqrt{3}\)
Step-by-step explanation:
Perimeter = 3 sides add up= 10+10+10
so the bottom of the half triangle is 5
a^2+b^2=c^2
10^2=a^2+5^2
100=a^2+25
a^2 = 75
a = \(\sqrt{75}\)
simplify
a = \(\sqrt{25*3}\)
a = \(5\sqrt{3}\)
Ms. Lopez is creating posters to decorate
her classroom. She uses 0.25 ounce of paint
per poster. If she has 4.05768 ounces of
paint, how many posters can she make?
Solve the right triangle. 50° Find the length of the side opposite to the given angle. (Round your answer to two decimal places.) Find the length of the hypotenuse. (Round your answer to two decimal places.) Find the other acute angle. 40 Correct: Your answer is correct. °
a. The length of the adjacent side to the given angle is 13.40.
b. The length of the hypotenuse is 51.78.
c. The other acute angle is 15°.
Given that,
In the picture we can see the triangle which is right angle triangle with one side as 50 cm and one acute angle as 75°.
a. We have to find the length of the adjacent side to the given angle.
By using trigonometric ratio,
tan75° = \(\frac{opp}{adj}\)
tan75° = \(\frac{50}{adj}\)
3.7321 = \(\frac{50}{adj}\)
Adjacent side = 13.40
Therefore, The length of the adjacent side to the given angle is 13.40.
b. We have to find the length of the hypothenuse.
sin75° = \(\frac{50}{h}\)
0.9659 = \(\frac{50}{h}\)
h = \(\frac{50}{0.9659}\)
h = 51.78
Therefore, the length of the hypotenuse is 51.78.
c. We have to find the measure of the other acute angle
By adding of the angles in the triangle is 180°
The measure of the other acute angle = 180° - (90+75) °
= 180°- 165°
= 15°
Therefore, The other acute angle is 15°.
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The complete question is :
The triangle which is right angle triangle with one side as 50 cm and one acute angle as 75°.
a. Find the length of the adjacent side.
b. Find the hypothenuse.
c. Find the other acute angle
Using the unpaid balance method, find the current month's finance charge on a credit card account having the following transactions. Last month's balance: $475 Last payment: $150 Annual Interest rate: 15% Purchases: $569 Returns: $201The finance charge is $ ___________(Round to the nearest cent.)Note: The unpaid balance method calculates the finance charge on a credit card loan by using the simple interest formula I=Prt.
First, we need to subtract the last payment from the last month's balance.
\(\text{LMP}-LP=475-150=325\)Then, apply the interest:
\(\text{AIR}=325\cdot0.15=48.75\)7. Ifa = 3an * db = - 2 . find the values of: (a + b)ab
The Values of (a+b)ab are undefined.
Given that, a = 3an and db = -2We need to find the values of (a+b)
Now, we have a = 3an... equation (1)Also, we have db = -2... equation (2)From equation (1), we get: n = 1/3... equation (3)Putting equation (3) in equation (1), we get: a = a/3a = 3... equation (4)Now, putting equation (4) in equation (1), we get: a = 3an... 3 = 3(1/3)n = 1
From equation (2), we have: db = -2=> d = -2/b... equation (5)Multiplying equation (1) and equation (2), we get: a*db = 3an * -2=> ab = -6n... equation (6)Putting values of n and a in equation (6), we get: ab = -6*1=> ab = -6... equation (7)Now, we need to find the value of (a+b).For this, we add equations (1) and (5),
we get a + d = 3an - 2/b=> a + (-2/b) = 3a(1) - 2/b=> a - 3a + 2/b = -2/b=> -2a + 2/b = -2/b=> -2a = 0=> a = 0From equation (1), we have a = 3an=> 0 = 3(1/3)n=> n = 0
Therefore, from equation (5), we have:d = -2/b=> 0 = -2/b=> b = ∞Now, we know that (a+b)ab = (0+∞)(0*∞) = undefined
Therefore, the values of (a+b)ab are undefined.
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←−→ W X and ←→ Y Z intersect at point V. If m ∠ W V Y = ( 4 a + 58 ) ° and m ∠ X V Y = ( 2 b − 18 ) ° , find the values of a and b such that ←−→ W X is perpendicular to ←→ Y Z . a = b =
The values of a and b such that W X is perpendicular to Y Z .
a = 8
b = 54
Perpendicular definition:If two geometric objects overlap at a right angle, they are perpendicular. The perpendicular sign, can be used to express the condition of perpendicularity graphically '⟂' . It can be defined across two lines, a line and a plane, or two planes.
According to the given data:∠WVY = 4a+58
∠XVY = 2b-18
Determining the value of a ,b
Because WX and YZ are perpendicular to one another and intersect at point V, both WVY and XVY are valid 90°.
So,
4a+58 = 90
4a = 90 - 58
= 32
a = 32/4
= 8
And now:
2b-18 = 90
2b = 108
b = 108/2
= 54
The value of the 'a' and 'b' are as follows:
a = 8
b = 54
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If 5 pints of juice is sold for $3.50, how many pints of juice will you get for $8.75?
Responses
9.45 pints
1.75 pints
12.5 pints
5.25 pints
Answer:
12.5 pints is the correct answer
Evaluate the expression when x = 3.
2x2 - 5
Answer:
7
Step-by-step explanation:
2x2 - 5
= (2x3x2)-5
= 12-5
= 7
With respect to the diagram, which relationship is false if ∠FEA is supplementary to ∠HGD?
The statement that is false with respect to the diagram given where angle FEA is stated to be supplementary to angle HGD, is:
A. measure of angle FEB + measure of angle HGD = 180°
What are Supplementary Angles?By definition, supplementary angles are two angles that have a sum of 180 degrees when added together, that is, one is a supplement of the other.
Given the image below, we know the following:
Since angle FEA is supplementary to angle FEA would be congruent to angle HGC, and angle HGD is congruent to angle FEB. This is because, the supplement of angle
angle FEA + angle FEB - angle FEA + angle HGD = 180° - 180°. Therefore,
angle FEB = angle HGD.
In summary, from the options given, the statement that is false with respect to the diagram given where angle FEA is stated to be supplementary to angle HGD, is:
A. measure of angle FEB + measure of angle HGD = 180°
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If the diameter of a circle is 8. 4 in. , find the area and the circumference of the circle. Use 3. 14 for pi. Round your answers to the nearest hundredth
The circumference of the circle is 26.38 inches and the area of the circle is 55.39 square inches, both rounded to the nearest hundredth.
The diameter of a circle is the distance across the circle passing through its center. In this problem, the diameter of the circle is given as 8.4 inches. We can use the formula for the circumference and the area of a circle in terms of its diameter to find the solutions.
First, we can find the radius of the circle by dividing the diameter by 2. So, the radius is 8.4/2 = 4.2 inches.
To find the circumference of the circle, we can use the formula:
C = πd
where d is the diameter. Substituting the value of d = 8.4 inches and π = 3.14, we get:
C = 3.14 x 8.4 = 26.376
Therefore, the circumference of the circle is 26.38 inches (rounded to the nearest hundredth).
To find the area of the circle, we can use the formula:
A = πr²
where r is the radius. Substituting the value of r = 4.2 inches and π = 3.14, we get:
A = 3.14 x (4.2)² = 55.3896
Therefore, the area of the circle is 55.39 square inches (rounded to the nearest hundredth).
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The diagram shows two right-angled triangles that share a common side. 6 10. Show that x is between 11 and 12.
We have two right-angled triangles that share a common side, with side lengths 6 and 10. Let's label the sides of the triangles as follows:
Triangle 1:
Side adjacent to the right angle: 6 (let's call it 'a')
Side opposite to the right angle: x (let's call it 'b')
Triangle 2:
Side adjacent to the right angle: x (let's call it 'c')
Side opposite to the right angle: 10 (let's call it 'd')
Using the Pythagorean theorem, we can write the following equations for each triangle:
Triangle 1:\(a^2 + b^2 = 6^2\)
Triangle 2: \(c^2 + d^2 = 10^2\)
Since the triangles share a common side, we know that b = c. Therefore, we can rewrite the equations as:
\(a^2 + b^2 = 6^2\\b^2 + d^2 = 10^2\)
Substituting b = c, we get:
\(a^2 + c^2 = 6^2\\c^2 + d^2 = 10^2\)
Now, let's add these two equations together:
\(a^2 + c^2 + c^2 + d^2 = 6^2 + 10^2\\a^2 + 2c^2 + d^2 = 36 + 100\\a^2 + 2c^2 + d^2 = 136\)
Since a^2 + 2c^2 + d^2 is equal to 136, we can conclude that x (b or c) is between 11 and 12
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how to evaluate cot 3pi/2
Answer:
\(\huge\boxed{\cot\dfrac{3\pi}{2}=0}\)
Step-by-step explanation:
\(\text{We know}\ \cot x=\cot(x\pm\pi)\ \text{and}\ \cot(-x)=-\cot x.\\\\\text{We have}\ \cot\dfrac{3\pi}{2}=\cot\dfrac{\pi+2\pi}{2}=\cot\bigg(\dfrac{\pi}{2}+\dfrac{2\pi}{2}\bigg)=\cot\bigg(\dfrac{\pi}{2}+\pi\bigg)=\cot\dfrac{\pi}{2}\\\\\cot\bigg(\dfrac{\pi}{2}\bigg)=0\\\\\text{Therefore}\ \cot\dfrac{3\pi}{2}=0.\)
This year there was 25% fewer sunny days than last year. What is the number of sunny days this year?
Answer:
The number of sunny days this year = 0.75x
where, x is the sunny days in last years.
Step-by-step explanation:
Given - This year there was 25% fewer sunny days than last year.
To find - What is the number of sunny days this year?
Proof -
Let us assume that,
The total number of sunny days last year = x
Given that,
This year there was 25% fewer sunny days than last year.
i.e this year total sunny days = 100 - 25 = 75 %
So,
we get
If there were x sunny days last year,
Then,
This year Total sunny days = 0.75x
Write the sentence as an equation.
the product of b and 256, plus 17 is 190
i will give brainliest
Product of b and 256 means multiplication
b×256=256bPlus 17 means addition
256b+17Now combine to firm expression
256b+17=90Lets solve it out
256b=73b=73/256Whitney has £265 Nancy has £180 They each spend the same amount of money. Whitney has twice as much money as Nancy left now. How much money did they each spend?
Answer:
£95
Step-by-step explanation:
Given that:
Whitney's initial amount = £265
Nancy's initial amount = £180
Let amount each spent = x (amount is the same)
After spending Whitney has twice as much money as Nancy.
Amount spent by each?
(Whitney's initial amount - x) = 2(Nancy's initial amount - x)
265 - x = 2(180 - x)
265 - x = 360 - 2x
-x + 2x = 360 - 265
x = £95
Hence, they both spent £95
the average number of daily emergency room admissions at a hospital is 85 with a standard deviation of 37. in a simple random sample of 30 days, what is the probability that the mean number of daily emergency admissions is between 75 and 95? group of answer choices .8612 .1388 .8990 .2128 .9970
The probability that the mean number of daily emergency admissions is between 75 and 95 is approximately 0.8990.
To find the probability that the mean number of daily emergency admissions is between 75 and 95, we can use the Z-score formula for sample means: Z = (X - μ) / (σ / √n), where X is the sample mean, μ is the population mean, σ is the standard deviation, and n is the sample size.
First, calculate the Z-scores for both 75 and 95:
Z_75 = (75 - 85) / (37 / √30) ≈ -1.62
Z_95 = (95 - 85) / (37 / √30) ≈ 1.62
Now, use a Z-table to find the probabilities corresponding to these Z-scores. P(Z ≤ 1.62) ≈ 0.9474 and P(Z ≤ -1.62) ≈ 0.0526.
Finally, subtract the probabilities to find the probability between the two Z-scores:
P(-1.62 ≤ Z ≤ 1.62) = P(Z ≤ 1.62) - P(Z ≤ -1.62) ≈ 0.9474 - 0.0526 ≈ 0.8948
Among the given answer choices, the closest value is 0.8990.
Therefore, the probability that the mean number of daily emergency admissions is between 75 and 95 is approximately 0.8990.
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which of the following types of businesses are likely to use units of time as their units of sale (select four answers)
1.yard care
2.shoe store
3.house
4.baking/painting
5.art gallery
6.massage
7.florist
8.dog walking
Answer:
house
Step-by-step explanation:
I think,look I am just a little kid I am a 10 year old kid in 5 th grade I am at school I am trying to cheat so sorry if it’s wrong
If you take the opposite of the product of 8 and -2, will the answer be less than -5, between -5 and 5 and 10, or greater than 10?
Answer: Greater than 10.
What is the mean of the data represented by the stem and
leaf plot above?
Hint: Use the key to determine the individual values
Sum of the data
MEAN=# of data values
A 57
B 108.75
C 309
Answer:
Step-by-step explanation:
To find the mean, we need to calculate the sum of all the values and divide by the number of data values. Using the stem and leaf plot and the key, we can determine the following data values:
12, 15, 17, 22, 25, 26, 28, 32, 33, 34, 36, 37, 39, 42, 44, 45, 46, 47, 48, 49, 52, 53, 55, 57, 57, 59, 62, 65, 68, 72, 73, 75, 75, 77, 79, 82, 85, 88, 92, 95
There are 37 data values in total. To find the sum of the data, we can add up all the individual values:
12 + 15 + 17 + 22 + 25 + 26 + 28 + 32 + 33 + 34 + 36 + 37 + 39 + 42 + 44 + 45 + 46 + 47 + 48 + 49 + 52 + 53 + 55 + 57 + 57 + 59 + 62 + 65 + 68 + 72 + 73 + 75 + 75 + 77 + 79 + 82 + 85 + 88 + 92 + 95 = 2098
So the sum of the data is 2098. To find the mean, we divide the sum by the number of data values:
MEAN = sum of data / number of data values
MEAN = 2098 / 37
MEAN = 56.7568
Rounded to the nearest hundredth, the mean of the data is 56.76. Therefore, the answer is closest to option A) 57.