3 years ago

A pyramid has a base area of 124 in² and a height of 25.2 in. What is the volume of the pyramid?

Mathematics

1 answer:

xeze [42]3 years ago

8 0

Answer:

1041.6

Step-by-step explanation:

The volume of a pyramid is V=b x h x 1/3 . b is the area of the base and h is the height. V=124 x 25.2 x 1/3 This can simplify to V=3124.8 x 1/3 . You could also just divide by 3. You will get 1041.6

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3 years ago

A study was done to determine the stress levels that students have while taking exams. The stress level was found to be normally

Advocard [28]

Answer: 0.1841

Step-by-step explanation:

Given: Mean : $\mu=8.2$

Standard deviation : $\sigma = 1.34$

The formula to calculate z-score is given by :_

$z=\dfrac{x-\mu}{\sigma}$

For x= 9, we have

$z=\dfrac{9-8.2}{1.34}\approx0.60$

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The P-value = $P(0.6$

$=0.9098773-0.7257469=0.1841304\approx0.1841$

Hence, the probability that at your next exam, you will have a stress level between 9 and 10 = 0.1841

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