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Sharon needs 64 credits to graduate from her community college. So far she has earned 56 credits. What percent of the required c

Anit [1.1K]

Sharon has a percentage of 56/64*100= 87.5%

3 0

3 years ago

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80 points ! Andrew charges $18 for each lawn he mows. Suppose he mows 17 lanes per month. How much money will andrew make per mo

levacccp [35]

Andrew will make $306 a month if he mows 17 lawns

4 0

2 years ago

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How many lines of symmetry does a regular decagon have? 8 10 11 12

bixtya [17]

The number of sides is the same as the number of lines of symmetry and the order of rotational symmetry.

So, a regular decagon would have 10 lines of symmetry.

6 0

3 years ago

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true or false If x represents a random variable with mean 114 and standard deviation 40, then the standard deviation of the samp

Goshia [24]

Answer:

$\mu = 114, \sigma = 40$

We also know that we select a sample size of n =100 and on this case since the sample size is higher than 30 we can apply the central limit theorem and the distribution for the sample mean would be given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And the standard deviation for the sampling distribution would be:

$\sigma_{\bar X}= \frac{40}{\sqrt{100}}= 4$

So then the answer is TRUE

Step-by-step explanation:

Let X the random variable of interest and we know that the true mean and deviation for this case are given by:

$\mu = 114, \sigma = 40$

We also know that we select a sample size of n =100 and on this case since the sample size is higher than 30 we can apply the central limit theorem and the distribution for the sample mean would be given by:

$\bar X \sim N(\mu, \frac{\sigma}{\sqrt{n}})$

And the standard deviation for the sampling distribution would be:

$\sigma_{\bar X}= \frac{40}{\sqrt{100}}= 4$

So then the answer is TRUE

6 0

3 years ago

Write the slope-intercept form of the equation of each line given the slope and y-intercept.

Readme [11.4K]

Answer:

y = -3x-2

Step-by-step explanation:

Slope intercept form is: y = mx+b

m = slope

b = y - intercept

Substitute: y = -3x - 2

3 0

3 years ago