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3 years ago

Explain the steps used to find the solution.

Mathematics

1 answer:

ololo11 [35]3 years ago

3 0

Answer:

3(2y + 5) = -21

open the bracket

6y + 15 = -21

collect like terms

6y = -21-15

6y = -36

divide by the coefficient of y

y = 36÷6

y= 6

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olchik [2.2K]

Answer:

900 cubic inches.

Step-by-step explanation:

Given the following data;

Volume of right circular cone = 300in³

We know that the volume of a right circular cone is given by the formula;

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

Where;

V is the volume of right circular cone.

r is the radius of the base of the right circular cone.

h is the height of the right circular cone.

The volume of a right circular cylinder is given by the formula;

$V = \pi r^{2}h$

Thus, multiplying the volume of the right circular cone by 3 would give us the volume of the right circular cylinder.

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

Substituting into the equation, we have;

$V = 300 * 3$

V = 900in³

Therefore, the volume of a right cylinder that has the same base and height as the cone is 900 cubic inches.

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3 years ago

It takes 28 minutes for 7 people to paint 7 walls. How many minutes does it take for 14 people to paint 14 walls?

Paraphin [41]

Answer:

Since it takes 7 people 28 minutes to paint 7 walls, it must take 1 person 28 minutes to paint each wall. Therefore, 14 people must also take 28 minutes to paint 14 walls, as each person still paints 1 wall individually.

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4 years ago

Read 2 more answers

The scale of a map is 1in:15miles. How many miles is it from Philadelphia, Pa to Boston, Ma if they are 20.4 inches apart on the

cupoosta [38]

Answer:

if 1in=15miles

then20.4in=? miles

1in by ? miles and 20.4in by 15miles

1in ? miles= 306in miles

divide both sides by 1in

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