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AURORKA [14]
2 years ago
10

Kira has 3 shelves of books. Each shelf has 4 books. She also has 5 books that are not on shelves. How many books does she have?

Write two equations with letters for the unknowns. Solve.​
Mathematics
1 answer:
Slav-nsk [51]2 years ago
7 0

Answer:

kira has 17 books. I think

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A basketball with a diameter of 9.5 in. is placed in a cubic box with sides 15 in. long. How many cubic inches of packing foam a
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Answer:

The volume of foam needed to fill the box is approximately 2926.1 cubic inches.

Step-by-step explanation:

To calculate the amount of foaming that is needed to fill the rest of the box we first need to calculate the volume of the box and the volume of the ball. Since the box is cubic it's volume is given by the formula below, while the formula for the basketball, a sphere, is also shown.

Vcube = a³

Vsphere = (4*pi*r³)/3

Where a is the side of the box and r is the radius of the box. The radius is half of the diameter. Applying the data from the problem to the expressions, we have:

Vcube = 15³ = 3375 cubic inches

Vsphere = (4*pi*(9.5/2)³)/3 = 448.921

The volume of foam there is needed to complete the box is the subtraction between the two volumes above:

Vfoam = Vcube - Vsphere = 3375 - 448.921 = 2926.079 cubic inches

The volume of foam needed to fill the box is approximately 2926.1 cubic inches.

4 0
3 years ago
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Step-by-step explanation:

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2 years ago
To determine the number of square centimeters in 8 square inches, multiply 8 by 6.45.​
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Step-by-step explanation:

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6 0
2 years ago
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The area of a storm shelter is 24 square meters the length is 5 and one third meters what is the width of the storm shelter?
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The answer would be 24/5.3
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