Can someone help me answer this? I’ve been trying to get help for a while. Thanks!

Mathematics

2 answers:

DENIUS [597]2 years ago

8 0

Answer:

radius- 2 inches

height- 3 inches

Step-by-step explanation:

the equation for the volume of a cylinder is V= $\pi$ $r^{2}$ (h)

the problem gives you the diamater which is 4 inches, the radius will simply be the diamater divided in half resulting in the radius being 2 inches.

So now you plug in the raidus (2 inches) to the equation of the volume of the cylinder and the problem already gave you the volume of the cylinder which is 12 $\pi$ so you plug that in as well

12 $\pi$ = $\pi$ $2^{2}$ (h)

simplify to get the height (the pies cancel out and you divide 12 by 4 because 2^2 is 4)

Vaselesa [24]2 years ago

7 0

Answer:

r=7

d=14

Step-by-step explanation:

You need to divide and then you need to you the symbol pie.

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Alik [6]

Answer:

44.1 mm^2

Step-by-step explanation:

The formula for a trapezoid is 1/2(b1 + b2)h

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2 years ago

All 10,000 California students in the beginning of 8th grade are given an entrance exam that will allow them to attend a top aca

lys-0071 [83]

Answer:

1.32% of students have the chance to attend the charter school.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions 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:

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

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.

This year the mean on the entrance exam was an 82 with a standard deviation of 4.5.

This means that $\mu = 82, \sigma = 4.5$