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3 years ago

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If the area of a rectangle is 144 sq. in. and the length of one side is 18in. what is the length of the other side?

1 answer:

navik [9.2K]3 years ago

8 0

Hello from MrBillDoesMath!

Answer: The other side has a length of 8

Discussion:

Area of a rectangle = l * w ( length times width). In our case

Area = 144 = l * w = 18 * w =>

18 w = 144 =>

w = 144/18 = 8

Thank you,

MrB

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Answer:

B.The score on Exam A is better, because the percentile for the Exam A score is higher.

Step-by-step explanation:

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

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The Z-score measures how many standard deviations the measure 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.

In this problem, we have that:

Two exams. The exam that you did score better is the one in which you had a higher zscore.

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This means that $\mu = 20.1, \sigma = 5.1$ .

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$Z = 0.76$

The composite score on Exam B is approximately normally distributed with mean 1031 and standard deviation 215.

This means that $\mu = 1031, \sigma = 215$ .

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The correct answer is:

B.The score on Exam A is better, because the percentile for the Exam A score is higher.

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