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adelina 88 [10]

3 years ago

7

The length of a rectangle is 4 units less than twice the width. What is the length if the area of the rectangle is 160 square un

its?
Enter your answer as a number, like this: 42

Do not enter any units.

1 answer:

11111nata11111 [884]3 years ago

3 0

A) L = (2*W) -4
B) L*W = 160
B) L = 160/W
Substituting that into A)
160/W = (2*W) -4
160 = 2W^2 -4W
2W^2 -4W-160 = 0
Width = 10
Length = 16

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