SOLUTION: the length of a rectangle is 8 cm less than twice the width. if the area of this rectangle is 640 cm^2, find the length and width dimensions

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Question 896392: the length of a rectangle is 8 cm less than twice the width. if the area of this rectangle is 640 cm^2, find the length and width dimensions
Answer by harpazo(655) About Me  (Show Source):
You can put this solution on YOUR website!
length = 2x - 8
width = x

area = 640

640 = (2x-8)(x)

Solve for x.

Then substitute x value into the length and width expressions given above.
Can you finish?