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The area of a rectangle is 52 yd^2 , and the length of the rectangle is 5 yd less than twice the width. Find the dimensions of the rectangle.

User XpressGeek
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Let the width be w.
The length is 5 yd less than twice the width, so the length is 2w-5.
The area is LW, and the area is 52 yd^2


LW=A
(2w-5)(w)=52

2w^2-5w=52

2w^2-5w-52=0

2w^2 - 13w + 8w - 52 = 0

w(2w - 13) + 4(2w - 13) = 0

(2w - 13)(w + 4) = 0

2w - 13 = 0 or w + 4 = 0

2w = 13 or w = -4

w = 6.5 or w = -4

Since a width cannot be a negative number, discard the solution w = -4.

The width is 6.5 yd.
The length is 2w - 5 = 2(6.5) - 5 = 13 - 8 = 8
The length is 8 yd.

The length is 8 yd, and the width is 6.5 yd.
User Dan Goodspeed
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