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just olya [345]
2 years ago
13

A rectangular piece of land requires 157 1/2 meters of fencing. If the length is 30 m less than the width, find the dimensions.

Mathematics
1 answer:
oksano4ka [1.4K]2 years ago
7 0
2L+2W=157.5
L=W-30
2(W-30)+2W=157.5
2W-60+2W=157.5
      +60           +60
4w=217.5
 W=54.4(.37 rounded to nearest tenth)
  L=24.4
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Step-by-step explanation:

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We have that:

A = a + (A \cap B)

In which a is the probability that a household has a cat but not a dog and A \cap B is the probability that a household has both a cat and a dog.

By the same logic, we have that:

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The probability that the household has a cat or a dog is 0.5

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