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09-01-2018
Mathematics

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A rectangle has a width represented by x and length represented by 4x. it the area of the rectangle is 80, find the value of x

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Аноним Аноним

09-01-2018

Area = length * width = 4x * x = 4x^2.

4x^2 = 80
x^2 = 80/4 = 20

x = sqrt 20

Answer is 4.47 to nearest hundredth.

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