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3 years ago

5

There are eight boys and seven girls in a class. The teacher randomly selects three different students to answer questions. What

is the probability that the first two students are girls followed by a boy?

1 answer:

stepladder [879]3 years ago

6 0

the probability is 7/15

Step-by-step explanation:

because there are 7 girls and 8 boys

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Mrs . Smith has 4 tables for her students. Each table can seat 5 students,

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Answer:

D.20

Step-by-step explanation:

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How long is a string reaching from the top of a 13-ft pole to a point on the ground that is 7ft from the base of the pole ?

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|x|=5<br><br> Solve for x<br><br> |x| = -5<br><br> Solve for x

MatroZZZ [7]

Answer:

Step-by-step explanation:

For |x|=5, x can be either 5 or -5.

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3 years ago

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3 years ago

The volume of this cylinder is 1751 cubic units. What is the volume of a cone that has the same base area and the sam height

siniylev [52]

Answer:

$V_2 = 583.67$

Step-by-step explanation:

Given

Represent the volume of the cylinder with V1 and the cone with V2.

So:

$V_1 = 1751$

Required

Find V2

The volume of a cylinder is:

$V_1 = \pi r^2h$

Because the cone and the cylinder have the same base area and height, the volume of the cone is:

$V_2 = \frac{1}{3}\pi r^2h$

Substitute $V_1$ for $\pi r^2h$ .

$V_2 = \frac{1}{3}\pi r^2h$

$V_2 = \frac{1}{3}V_1$

Substitute 1751 for V1

$V_2 = \frac{1}{3} * 1751$

$V_2 = \frac{1* 1751}{3}$

$V_2 = \frac{1751}{3}$

$V_2 = 583.67$

<em>The volume of the cone is 583.67 cubic units</em>

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3 years ago