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Rudiy27
3 years ago
10

A math textbook is 1 1/4 in. thick. how much shelf space is needed for 30 copies of the book?

Mathematics
1 answer:
inysia [295]3 years ago
8 0
Hello!

You have to multiply 1 1/4 by 30 because each math book is 1 1/4 in. thick, and 30 books is 1 1/4 by 30. First change 30 and 1 1/4 to an improper fraction.

\frac{30}{1} \times    \frac{5}{4} =  \frac{150}{4} =  37  \frac{1}{2}

\framebox{37 1/2 inches}
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A package of 6 pairs of insulated gloves costs 39.94. What is the unit price of pairs of gloves
ollegr [7]

Answer:

The unit price for a pair of gloves is $6.57

Step-by-step explanation:

To find the unit price, divide the price of the total amount of items and divide that price by the amount of items.

39.94/6= 6.566666666666666666666666

Round to two decimal places since you are dealing with money.

You find the answer to be 6.57.

Add the dollar sign because you are dealing with money.

The final answer is $6.57.

3 0
3 years ago
2.) Zhang is finding the height of a square pyramid with a base side length of 9, a width of 9, and a volume of 162. What is his
Marina86 [1]

Answer:

h = 6 units

Zhang major error is that he did not express the formula for finding the volume of a square base pyramid properly well. The formula was suppose to be 1/3 × base area × height. He omitted the 1/3.

Step-by-step explanation:

The square base pyramid has a base length of 9  and width of 9 . It is a square base pyramid so definitely the length of the base will be equal. The volume of the square base pyramid is given as 162 .

The formula for the volume of a square base pyramid is represented as follows.

volume = 1/3Ah

where

A = base area

h = height

volume = 1/3Ah

Base area = L²

Base area = 9² = 81

volume = 162 units²

volume = 1/3 ×  81 × h

162 = 1/3 × 81 × h

162 = 27h

divide both sides by h

h = 162/27

h = 6 units

He omitted the 1/3 for the formula of the volume of a square base pyramid.

5 0
3 years ago
Please help I’ll give brainliest
GarryVolchara [31]

Answer:

285.214 cubic meters

Step-by-step explanation:

So I use this equation V=πr2h

All because this equation have a radius and so I put it in this form

V= π5.5^2 x 3

V=285

(I hope this help and if it’s wrong I am truly sorry)

8 0
3 years ago
there are 64 ppl at the movies 1/2 or the people are eating popcorn 3/8 are eating chocolate candy and the rest are eating licor
Lubov Fominskaja [6]

1/2= 4/8

fraction of people eating licorice twists= 1-(4/8+3/8)

=1-7/8

=1/8

no. of people eating licorice twists= 1/8× 64

= 1/8×8×8

=8

4 0
3 years ago
Read 2 more answers
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lidiya [134]
The answer is C i hope this finds you
4 0
3 years ago
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