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2 years ago

Which of the following best describes SO ? HELPPP ASAP PLS

Mathematics

2 answers:

Dmitry [639]2 years ago

6 0

Answer: A. chord

Step-by-step explanation:

It is not the radius because it doesn’t go from the edge of the circle to the center point M.

It is not the diameter because it doesn’t go entirely through the circle.

It is not the center because the center is point M

Elena L [17]2 years ago

4 0

Answer:

chord is the answer hope this helped

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Which statement explains why 13x−13y=−26 shares a solution with this system of equations:

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1st one

It all adds up and the first one would be the most educated answer

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2 years ago

A toy rocket is launched from a platform 24ft above the ground. The

jok3333 [9.3K]

Answer:

4 sec

Step-by-step explanation:

let y = 0 which is the height when the rocket hits the ground

-3t^2 + 6t + 24 = 0

-3(t^2 - 2t - 8) = 0

-3(t - 4)(t + 2) = 0

t = 4 or t = -2

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2 years ago

If the price of a toy usually costing £50 and id increased to £65 what is the increase percentage

Savatey [412]

Answer:

30%

Step-by-step explanation:

If the price went up to 65 from 50, that is an increase of 15. 15 is 30% of 50.

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2 years ago

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**100** The given data represent the total compensation for 10 randomly selected CEOs and their company's stock performance in

Shalnov [3]

Answer:

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Step-by-step explanation:

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3 years ago

To estimate the mean height μ of male students on your campus,you will measure an SRS of students. You know from government data

nexus9112 [7]

Answer:

a) $\sigma = 0.167$

b) We need a sample of at least 282 young men.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by

$Z = \frac{X - \mu}{\sigma}$

This Zscore is how many standard deviations the value of the measure X is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

(a) What standard deviation must x have so that 99.7% of allsamples give an x within one-half inch of μ?

To solve this problem, we use the 68-95-99.7 rule. This rule states that:

68% of the measures are within 1 standard deviation of the mean.

95% of the measures are within 2 standard deviations of the mean.

99.7% of the measures are within 3 standard deviations of the mean.

In this problem, we want 99.7% of all samples give X within one-half inch of $\mu$ . So $X - \mu = 0.5$ must have $Z = 3$ and $X - \mu = -0.5$ must have $Z = -3$ .

$Z = \frac{X - \mu}{\sigma}$

$3 = \frac{0.5}{\sigma}$

$3\sigma = 0.5$

$\sigma = \frac{0.5}{3}$

$\sigma = 0.167$

(b) How large an SRS do you need to reduce the standard deviationof x to the value you found in part (a)?

You know from government data that heights of young men are approximately Normal with standard deviation about 2.8 inches. This means that $\sigma = 2.8$