Question

The length of a rectangle is 1ft less than twice its width, and the area of the rectangle is 78ft^2. Find the dimensions of the rectangle.

Answer 1

Let w = width
Length is 2w - 1

78 = w (2w - 1)
2w^2 - w - 78 = 0
(w+6)(2w-13) = 0
w = -6 or 2w = 13
w = -6 or w = 13/2

-6 does not apply so w = 6.5

Dimensions of the rectangle are 6.5 feet by 12 feet ---> Ans

Answer 2

Thank you...

Answer 3

Glad to help.