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2 years ago

When Mrs. Carter got a flat tire, 73% of the 32 pounds of air in the tire escaped.

Mathematics

1 answer:

Lorico [155]2 years ago

8 0

Step-by-step explanation:

100% = 32

73% = 73×1% = 73×100%/100 = 73×32/100 = 23.36 pounds.

for an estimate I would round up to 75% = 3/4, and then calculate quickly 32 × 3/4 = 8×3 = 24 pounds.

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DerKrebs [107]

Perimeter of the carpet = 21.8 m

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Given:

Dimension of the living room:

$l = 4.9 $ m\\w = 6 $ m$

A. Perimeter of the carpet = perimeter of a rectangle

Perimeter = $2(l + w)$

Substitute

$Perimeter = 2(4.9 + 6)\\= 21.8 $ m$

Perimeter of the carpet = 21.8 m (The digits here are significant)

B. Area of the carper = area of a rectangle 

Area = $l \times w$

Substitute

$Area = 4.9 \times 6\\= 29.4 $ m^{2}$

Area of the carpet = $29.4 $ m^{2}$ (the digits here are significant)

Therefore, considering the rules of significant digits:

Perimeter of the carpet = 21.8 m

Area of the carpet = $29.4 $ m^{2}$

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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