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KatRina [158]
3 years ago
14

A shoebox is covered with packing paper before being shipped. The paper cost $0.02 per square inch. How much will it cost to cov

er three pairs of shoes?
Mathematics
1 answer:
Yuliya22 [10]3 years ago
3 0

It will cost about $0.72 for three pair of shoes assuming shoe box is rectangular shape having 12 square inches of packing paper.

Step-by-step explanation:

  • Assuming a shoe box rectangle in shape and the same size is required.
  • Length of rectangle box assuming to be 4 inches.
  • Width of rectangle box assuming to be 3 inches.
  • as we know area of rectangle is Length * Breath(Width) .
  • 12 square inches is the total packing paper required for each box.
  • To cover cost of three pairs of shoes $0.02 per square inch.
  • Each box would cost about 12 square inches * 0.02 pr square inches.
  • 0.24 square inches of packing paper will be required.
  • let three pairs of shoes be x
  • Total pairs of shoes would be= (12 * 0.02)*x
  • Answer would be for 3 pairs of shoes = 0.24*3 = 0.72 square inches.

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Answer:

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Step-by-step explanation:

Let y be the width of the rectangle

The length of the rectangle is 5 unit more than the width. This is written as:

Length = y + 5

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Recall:

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36 = (y + 5) x y

36 = y^2 + 5y

Rearrange the expression

y^2 + 5y — 36 = 0

To solve this problem by factorization, multiply the first term (i.e y^2) and last term ( i.e — 36) together. This gives — 36y^2

Next, find two factors of —36y^2 such that when we add them together it will result to the second term (5y). These factors are —4y and 9y. Now we substitute —4y and 9y in place of 5y in the equation. This is illustrated below:

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(y + 9) (y — 4) =0

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