Alexandri downloads 13 songs that cost 0.99 each plus song for 1.49.She uses a coupon for 1.50 off.What is the total price Alexandria pays?

Answer: The answer is C: [tex]17\sqrt{13}[/tex]

Step-by-step explanation: Since both Radicands have the same, add the indexes together to get 17

For the given observations 48, 12, 11, 45, 48, 48, 43, 32, the values are -

Mean = 37.5 , Median = 44, and Mode = 48

The median is the best measure for the data.

What is mean?

In statistics, in addition to the mode and median, the mean is one of the metrics of central tendency. Simply put, the mean is the average of the values in the given collection. It indicates that values in a particular data collection are distributed equally. The three most frequently employed metrics of central tendency are the mean, median, and mode.

To find the measure that best represents the given data, we can calculate the mean, median, and mode and choose the measure that gives us the most representative value.

Mean -

To find the mean of the data, we add up all the values and divide by the total number of values -

Mean = (48 + 12 + 11 + 45 + 48 + 48 + 43 + 32) / 8 = 37.5

Median -

To find the median of the data, we arrange the values in order from smallest to largest and then find the middle value.

If there are an even number of values, we take the average of the two middle values.

11, 12, 32, 43, 45, 48, 48, 48

There are eight values in the data set, so the median is -

(43 + 45) / 2

88 / 2

44

Mode -

To find the mode of the data, we look for the value that occurs most frequently.

In this case, 48 occurs three times, which is more than any other value, so the mode is 48.

Conclusion:

In this data set, the mean is 37.5, the median is 44, and the mode is 48. Since the data set has some values that are higher than the others, such as 48 occurring three times, the mean may be influenced by these outliers.

In this case, the median is a better measure of central tendency because it is not influenced by outliers.

Therefore, the median is the measure that best represents the data.

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t = 8.46 days

To solve this problem, we can use the equation A = A0e-0.1t, where A0 is the original wound area (22 square centimeters in this case). We can rearrange the equation to solve for t:

t = -(ln(A/A0))/0.1

Plugging in the values for A (14 square centimeters) and A0 (22 square centimeters) gives us t = 8.46. Rounding to two decimal places, the answer is t = 8.46 days.

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The first runner is covering a mile in 9.25 minutes and the second runner is covering a mile in 18.5 minutes the first runner is traveling at a greater speed.

Travel is the movement of people between distant geographical locations for any purpose. It can be done by foot, bicycle, car, boat, bus, train, or plane. Travel can also include relatively short stays between successive movements, such as in the case of tourism or business travel. Travel can be for leisure, recreational, or business purposes, and can be one way or round trip. It may involve travel to different places within the same country, or to another country altogether.

The first runner is traveling at a greater speed because their time to complete each mile is less than the second runner.
For example, the first runner takes 18.5 minutes to complete 2 miles, while the second runner takes 37 minutes to complete the same distance.
This means that the first runner is covering a mile in 9.25 minutes, while the second runner is covering a mile in 18.5 minutes.
Therefore, the first runner is traveling at a greater speed.

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Answer: Runner 1

Jonson family I think  sorry if im wrong

Step-by-step explanation:

After eight leaps, there is a 0.3828 percent chance that the bug will still be within three units of where it started.

a. To return to the origin after eight jumps, the bug must take an equal number of left and right jumps. Since there are [tex]2^8=256[/tex] possible sequences of eight left/right jumps, we need to count how many of these sequences have an equal number of left and right jumps. To do this, we can use the binomial coefficient:

[tex]C(8,4) = 8! / (4! * 4!) = 70[/tex]

This counts the number of ways to choose 4 out of 8 jumps to be leftward, with the other 4 jumps being rightward. Therefore, the probability of returning to the origin after eight jumps is:

[tex]P(return to origin) = 70 / 256 = 0.2734[/tex]

b. To be within three units of the origin after eight jumps, the bug must take at most three more rightward than leftward jumps or three more leftward than rightward jumps. We can compute the probabilities of each of these cases separately and add them up. Let's first consider the case where there are three more rightward jumps than leftward jumps. To count the number of such sequences, we can choose three out of the eight jumps to be leftward, with the other five jumps being rightward. Therefore, the probability of this case is:

P(3 more rightward) = C(8,3) / 256 = 0.1094

Similarly, the probability of having three more leftward jumps than rightward jumps is also 0.1094. To count the number of sequences where there are two more rightward jumps than leftward jumps, we can choose two out of the eight jumps to be leftward, with the other six jumps being rightward. There are also C(8,2) sequences with two more leftward jumps than rightward jumps. Therefore, the probability of being within three units of the origin after eight jumps is:

[tex]P(within 3 units) = 2 * 0.1094 + 2 * C(8,2) / 256 = 0.3828[/tex]

Therefore, the probability that the bug is within three units of the point of departure after eight jumps is 0.3828.

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The function notation for the amount of rainfall after 6 hours of raining is f(t) = 37.

Let's define the function as follows:

f(t) = r

where t represents the time elapsed since the rain started, f(t) represents the amount of rainfall at time t, and r represents the amount of rainfall in millimeters.

According to the problem statement, six hours after it started raining, the amount of rain was 37 millimeters. We can use this information to find the value of r:

f(6) = 37

This means that at time t=6, the amount of rainfall is 37 millimeters.

Now we can write the function in terms of the specific value of r:

f(t) = 37

This means that the amount of rainfall is constant and equal to 37 millimeters for all values of t.

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Therefore , the solution of the given problem of percentage comes out to be  20 years there will be roughly 265 elephants.

A percentage in statistics is a number or a number that is represented as a portion of 100. Additionally, "pct.," "pct," and "pc" are infrequently employed. However, the "%" symbol is frequently used to indicate it. The percentage sum is flat; there are no dimensions. Since 100 is the numerator of percentages, they are really just integers. The percent symbol (%) or the word "percent" must come before a number to denote that it is a percentage.

Here,

Elephant population after each year is 97% of the population after the preceding year if the population is declining at a rate of 3% per year.

We can use the following equation to determine the number of elephants in 20 years:

Population after 20 years is equal to the initial population multiplied by (1 - rate of decline/100) years.

Inputting the numbers provided yields:

=> 20-year population = 486 * (1 - 3/100)

=> 20 People after 20 years= 486*0.97.

=> 20 Years Later, Number = 486 x 0.5459

=> 20 years later, the population is 265,26.

Consequently, in 20 years there will be roughly 265 elephants.

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if we take a peek at the tickmarks on the sides, that means that the line that cuts the side is the median, so we have three medians meeting at the centroid of the triangle, bearing in mind that the centroid cuts all three medians in a 2 : 1 ratio, then we can say that line AC is being cut by it in a 2 : 1 ratio, the hell all that means?  well, it means

[tex]\cfrac{AB}{BC}=\cfrac{2}{1}\implies \cfrac{10}{BC}=\cfrac{2}{1}\implies 10=2BC\implies \cfrac{10}{2}=BC\implies \boxed{5=BC} \\\\\\ \stackrel{AB+BC}{10+5}\implies \stackrel{ AC }{\boxed{15}}[/tex]

Answer:

See below.

Step-by-step explanation:

We are asked to identify BC and AC.

Before we start, we should know that this triangle has a center called a Centroid.

A Centroid is a point that is formed by 3 concurrent medians.

A Median is a line segment that connects the vertex of a triangle to the midpoint of the opposite side.

The top part of a Median is 2/3 of the entire line segment. The bottom part of a Median is 1/3 of the entire line segment.

Using the information from above, we can identify that AB (10) is 2/3 of AC, and that BC is 1/3 of AC.

Divide 10 by [tex]\frac{2}{3}[/tex] to find AC.

[tex]10 \div ( \frac{2}{3} )=15 \ (AC)[/tex]

Since we know AC, we can now find BC by simply subtracting AC - AB.

[tex]15-10=5 \ (BC)[/tex]

Therefore, AC = 15; BC = 5.

Answer:

sin 45°= x/110 ft

sin45° * 110 = x

Step-by-step explanation:

try it i dont have calculator here

Therefore, the final amount for an investment of $5,000 over 5 years at an annual interest rate of 6% if the interest is compounded quarterly is $6,734.27.

SI unit is defined as (P, R, and T) / 100.

SI stands for Straightforward Interest in this instance. P represents the principal (loaned or invested), and R represents the interest rate.

To solve this problem, we need to use the formula for compound interest:

A = P (1 + r/n)^(nt)

Where:

A = the final amount

P = the principal amount (initial investment)

r = the annual interest rate (as a decimal)

n = the number of times the interest is compounded per year

t = the time (in years)

Here, we have:

P = $5,000

r = 6% = 0.06 (annual interest rate)

n = 4 (compounded quarterly)

t = 5 years

Plugging these values into the formula, we get:

A = 5000 (1 + 0.06/4)^(4*5)

A = 5000 (1.015)^20

A = 5000 (1.349858807)

A = $6,734.27 (rounded to the nearest cent)

Therefore, the final amount for an investment of $5,000 over 5 years at an annual interest rate of 6% if the interest is compounded quarterly is $6,734.27.

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I told my friend that I can eat 58 of a large pizza. If I only ate 12 of what I said, I can eat, then the fraction of large pizza eaten is [tex]\frac{6}{29}[/tex]

The portion of pizza supposed to be eaten was 58 while actually eaten slices of pizza is 12. The computation of the fraction of large pizza did you eat is given below:

= Ate portion ÷ large pizza

= [tex]\frac{12}{58}[/tex]

= [tex]\frac{6}{29}[/tex]

Hence, the fraction of large pizza did you eat is 6 ÷ 29

The question is incomplete the complete question would be "You told your friend that you could eat 58 of a large pizza. If you only ate 12 of what you said you could eat, what fraction of a large pizza did you eat?"

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Given the slope of the line and the intercept it forms with the y-axis, one of the mathematical forms used to derive the equation of a straight line is called the slope intercept form. Y = mx + b, where m is the slope of the straight line and b is the y-intercept, is the slope intercept form.

The equation of the line, as determined by the slope-intercept formula, is: y = mx + b, where m is the line's slope and b is its y-intercept. As x and y represent each point on the line, they must be maintained as variables when using the formula above.

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The average rate of change of f the first function is 3,  the average rate of change of the second function is 10, and the average rate of change of the third function is 0.2.

The average rate of change of a function from x1 to x2 can be calculated using the formula:

Average rate of change = (f(x2) - f(x1))/(x2 - x1)

For the first function, f(x) = 3x, we can plug in the values of x1 = 0 and x2 = 5 to get:

Average rate of change = (f(5) - f(0))/(5 - 0) = (15 - 0)/5 = 3

For the second function, f(x) = x2 + 2x, we can plug in the values of x1 = 3 and x2 = 5 to get:

Average rate of change = (f(5) - f(3))/(5 - 3) = (25 + 10 - 9 - 6)/2 = 10

For the third function, f(x) = square root of x, we can plug in the values of x1 = 4 and x2 = 9 to get:

Average rate of change = (f(9) - f(4))/(9 - 4) = (3 - 2)/5 = 0.2

The slope of a function is interpreted as the average rate of change of the function. Therefore, the slope of the first function is 3, the slope of the second function is 10, and the slope of the third function is 0.2.

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I hope you're doing well and this gives a clear understanding to you.

No, the expression w^(2)+64 is not a difference of squares.

A difference of squares is an expression of the form a^2 - b^2, where a and b are real numbers. To determine if the expression is a difference of squares, you need to look at the expression and check if it has the form of a^2 - b^2.

In the expression w^2 + 64, the base of the first term is w, which is not a number, so it cannot be a difference of squares. The second term is 64, which is a real number, but it is not being subtracted from the first term. The expression does not have the form of a^2 - b^2, so it is not a difference of squares.

To summarize, the expression w^2 + 64 is not a difference of squares because it does not have the form of a^2 - b^2.

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The one real solution of the equation 6x^(2)+7x-h=0 can be expressed in terms of equality as h = -49/24 using discriminant formula.

To find all values of h for which the quadratic equation 6x^(2)+7x-h=0 has one real solution, we need to use the discriminant formula. The discriminant formula is given by:

D = b^(2) - 4ac

Where a, b, and c are the coefficients of the quadratic equation. In this case, a = 6, b = 7, and c = -h. Plugging these values into the formula, we get:

D = 7^(2) - 4(6)(-h)

D = 49 + 24h

For the quadratic equation to have one real solution, the discriminant must be equal to 0. Therefore, we can set D = 0 and solve for h:

49 + 24h = 0

24h = -49

h = -49/24

Therefore, the value of h for which the quadratic equation has one real solution is h = -49/24. We can write this as an equality:

h = -49/24

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The number if the number is even, less than -12 and the absolute value of the number is between 9 and 15 is 14

Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.

The acronym PEMDAS stands for Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This approach is used to answer the problem correctly and completely.

We are given that;

Number is even

Number is less than -12

Number is between 9 and 15

Now,

If the number is even and less than -12, the only possibility within the given constraints is -14.

Since the absolute value of -14 is 14, which is between 9 and 15, it satisfies the additional condition that the absolute value of the number is between 9 and 15.

Therefore, by algebra the answer will be 14.

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The area οf the cοmpοsite shape is 541 square meters.

Cοmpοsite shapes refer tο 2D shapes that are made up οf twο οr mοre simple shapes. These simple shapes can be cοmbined tο fοrm a mοre cοmplex shape.

Tο find the area οf this cοmpοsite shape, we need tο divide it intο smaller shapes and add up their areas. Let's divide it intο twο rectangles and a triangle:

First rectangle:

Length = 18 m

Width = 11 m

Area = length x width = 18 m x 11 m = 198 m²

Secοnd rectangle

Length = 14 m

Width = 20 m

Area = length x width = 14 m x 20 m = 280 m²

Triangle:

Base = 14 m

Height = 9 m (we can find this by subtracting the height οf the tοp rectangle frοm the height οf the entire shape: 20 m - 11 m = 9 m)

Area = (base x height) / 2 = (14 m x 9 m) / 2 = 63 m²

Nοw we add up the areas οf the three shapes tο get the tοtal area οf the cοmpοsite shape:

Tοtal area = 198 m² + 280 m² + 63 m² = 541 m²

Hence, the area οf the cοmpοsite shape is 541 square meters.

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The best deal is the one with the lowest total cost. To find the total cost of each option, we can use the compound interest formula:

A = P(1 + r/n)^(nt)

Where A is the total cost, P is the principal amount ($24,790), r is the annual interest rate, n is the number of times the interest is compounded per year, and t is the number of years.

Option 1: A = 24,790(1 + 0.04/12)^(12*6) = $31,617.64

Option 2: A = 24,790(1 + 0.0427/4)^(4*6) = $31,814.57

Option 3: A = 24,790(1 + 0.04/365)^(365*5) = $30,248.29

Option 4: A = 24,790(1 + 0.0424/12)^(12*5) = $30,506.55

Option 5: A = 24,790(1 + 0.04/4)^(4*4) = $28,793.32

Option 6: A = 24,790(1 + 0.0422/365)^(365*4) = $28,992.84

Option 7: A = 24,790

The best deal is Option 7, paying cash, with a total cost of $24,790. However, if paying cash is not an option, the next best deal is Option 5, with a total cost of $28,793.32.

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The value of x from the similar triangles is x = 4

If two triangles' corresponding angles are congruent and their corresponding sides are proportional, they are said to be similar triangles. In other words, similar triangles have the same shape but may or may not be the same size. The triangles are congruent if their corresponding sides are also of identical length.

Corresponding sides of similar triangles are in the same ratio. The ratio of area of similar triangles is the same as the ratio of the square of any pair of their corresponding sides

Given data ,

Let the first triangle be ΔQRS

Let the second triangle be ΔLMN

Now , the measure of ∠QRS = measure of ∠NLM

And , the triangles are similar

Now , the corresponding sides of similar triangles are in the same ratio

On simplifying , we get

LM / RQ = LN / QS

( 2x + 4 ) / 8 = 9 / 6

Multiply by 8 on both sides , we get

2x + 4 = ( 3/2 ) 8

2x + 4 = 12

Subtracting 4 on both sides , we get

2x = 8

Divide by 2 on both sides , we get

x = 4

Therefore , the value of x is 4

Hence , the similar triangles are solved

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Answer:

p = 78.8 m

mass of chain = 134 kg

Step-by-step explanation:

a)  sin28 = 37/p             sin = opposite/hypotenuse

p = 37/sin28 = 78.8 m

b)  78.8 m  x 1.7 kg/m = 134 kg

There are 1,162,624 ways for the class of 34 eighth graders to elect their officers.

There are 34 eighth graders in the class and 4 officer positions to be elected, which are class president, vice president, secretary, and treasurer.

We can use the multiplication principle to find the total number of ways the officers can be elected. The multiplication principle states that if there are a ways to do one thing and b ways to do another, then there are a × b ways to do both.

First, let's consider the class president position. There are 34 students who can be elected as class president. After the class president is elected, there are 33 students left who can be elected as vice president.

Similarly, there are 32 students left who can be elected as secretary, and 31 students left who can be elected as treasurer.

Therefore, the total number of ways the officers can be elected is:

34 × 33 × 32 × 31 = 1,162,624

So, there are 1,162,624 ways for the class of 34 eighth graders to elect their officers.

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The 90% confidence interval for the difference in population mean between PaCO2 and PETCO2 among ill foals is (-3.61, -1.09).

(a) Stem-and-leaf display for the observed differences PaCO2 - PETCO2 of the 10 healthy foals:

Stem | Leaf

-3  | 5, 6

2   | 6

1   | 7

-3  | 6

-2  | 8

0   | 8

3   | 7

-0  | 2

-3  | 1

6   | 3

(b) Five-number summary (minimum, lower quartile, median, upper quartile and maximum) for the data in part (a):

Minimum = -3.6, Lower Quartile = -3.1, Median = -0.2, Upper Quartile = 3.7, Maximum = 6.3

(c) Signed rank test for difference in distribution between PaCO2 and PETCO2 among healthy foals at 5% significance level:

The null hypothesis is that the PaCO2 and PETCO2 among healthy foals follow the same distribution. Using a Wilcoxon signed rank test, the p-value is 0.80 and is greater than 0.05 (alpha), therefore, there is no significant difference in distribution between PaCO2 and PETCO2 among healthy foals.

(d) Is there any difference in population mean between PaCO2 and PETCO2 among ill foals? Use t-tools to answer this question at 5% alpha level:

Using a two-sample t-test, the p-value is 0.00 and is less than 0.05 (alpha), therefore, there is a significant difference in population mean between PaCO2 and PETCO2 among ill foals.

(e) Provide a 90% confidence interval for the difference in population mean between PaCO2 and PETCO2 among ill foals:

The 90% confidence interval for the difference in population mean between PaCO2 and PETCO2 among ill foals is (-3.61, -1.09).

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Answer:

Step-by-step explanation:

you can set two ratios equal to each other to solve for the unknown (the amount of bananas).

11:3 as x:1

then cross multiply to get an equation. divide both sides by 3 to isolate X. plug that into a calculator and your answer is 3.6 repeating which rounds to 4 oz of bananas

The circumcenter of the triangle formed by the vertices is found as  (2 , 5).

The intersection or meeting of three perpendicular bisectors from such a triangle's sides is known as the circumcenter. The point of concurrence of a triangle is another name for a triangle's circumcenter.

Given points are,

A = (-2, 5),

B = (2, 1),

C = (5, 5)

We must solve either two bisector equations then determine the intersection locations in order to determine the circumcenter.

Mid point of AB = [(-2 + 2)/2, (5 + 1)/2] = (0,3)

Slope of AB = [(1 - 5)/(2 + 2)] = -1

The negative reciprocal of a given slope is the slope of the bisector.

Hence, the perpendicular bisector's slope equals 1.

Formula of AB with coordinates (0, 3) and slope (1),

(y – 3) = 1(x – 0)

x – y = -3     eq…(1)

Similarly, for AC

Mid point of AC = [(-2 + 5)/2, (5 + 5)/2] = (1.5, 5)

Slope of AC = [(5-5)/(5+2)] = 0

The negative reciprocal of a given slope is the slope of the bisector.

Hence, the perpendicular bisector's slope equals 0

Equation of AC at coordinates (1.5,5) and slope (0),

(y – 5) = 0(x – 1.5)

y  = 5  ....eq 2

Solve eq (1) and (2),

x – y = -3  

x - 5 = -3

x = 2

Thus, the circumcenter of the triangle formed by the vertices is found as  (2 , 5).

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The length of one side of the square is 1.5 units

The complete question is added as an attachment

From the question, we have

The triangle and the squate have the same perimeter

The perimeter is the sum of the side lengths

So, we have

Triangle = 3x + 4x + 5x

Square = 4 * (x + 1)

Evaluate

Triangle = 12x

Square = 4x + 4

So, we have

4x + 4 = 12x

Evaluate

8x = 4

So, we havr

x = 0.5

From the figure, we have

Length = x + 1

Evaluate

Length = 0.5 + 1

So, we have

Length = 1.5

Hence, the length is 1.5

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The solutions to the equation z^2 = -361 are:

z = ±19i and z = ±19i*(-1)^k, k = 0 or 1.

To find all n complex solutions of the equation x^n = k, where k is a complex number, we can use the polar form of complex numbers. If we write k in polar form as k = re^(iθ), where r = |k| is the modulus of k and θ = arg(k) is the argument of k, then we can write x in polar form as x = ρe^(iφ), where ρ = |x| is the modulus of x and φ = arg(x) is the argument of x.

Substituting these polar forms into the equation x^n = k, we get:

(ρe^(iφ))^n = re^(iθ)

Taking the modulus of both sides, we get:

|ρ^n| = |r|

Since r is a complex number, its modulus is a positive real number, so we can write r = Re^(i0) in polar form, where R = |r|.

Substituting this into the equation above, we get:

|ρ^n| = R

Taking the argument of both sides, we get:

nφ = 0 + 2πk

where k is an integer. Solving for φ, we get:

φ = (2π*k) / n

Substituting this expression for φ back into the polar form of x, we get:

x = ρe^(i(2π*k)/n)

where ρ is a positive real number. This gives us n complex solutions for x, which are:

x = ρe^(i(2π*k)/n), k = 0, 1, 2, ..., n-1.

Now let's apply this method to solve the equation z^2 = -361.

Writing -361 in polar form, we have:

-361 = 361e^(iπ)

Taking the square root of both sides, we get:

z = ±sqrt(361)e^(iπ/2 + iπk)

where k = 0 or 1. Simplifying, we get:

z = ±19e^(i(π/2 + π*k))

So the solutions to the equation z^2 = -361 are:

z = ±19i and z = ±19i*(-1)^k, k = 0 or 1.

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It is reported that a survey had a standard error of the mean of 20, and it is assumed that the population standard deviation is 500. The size of the sample that was used in this survey is 625., So the answer is c) None of the answers are correct.

The size of the sample used in the survey can be determined using the formula for standard error of the mean:

Standard error of the mean = (Population standard deviation) / (Square root of sample size)

Rearranging the formula to solve for sample size, we get:

Sample size = (Population standard deviation / Standard error of the mean)^2

Plugging in the given values:

Sample size = (500 / 20)^2

Sample size = 25^2

Sample size = 625

Therefore, the size of the sample used in the survey is 625.

The correct answer is c) None of the answers are correct, as 625 is not one of the given options.

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We can use the fact that 32 is equal to 2 raised to the power of 5:

32 = 2^5

Substituting this into the equation gives:

16^x = 2^5

We can then rewrite 16 as 2^4, since 16 is equal to 2 raised to the power of 4:

(2^4)^x = 2^5

Simplifying the left side of the equation gives:

2^(4x) = 2^5

Now we can see that the bases of both sides of the equation are equal, so we can set the exponents equal to each other:

4x = 5

Dividing both sides by 4 gives:

x = 5/4

Therefore, the solution to the equation 16^x = 32 is x = 5/4.