SOLUTION: The length of a rectangle is three inches greater than twice its width. Its area is 90 square inches. Find its dimensions.
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Question 586572: The length of a rectangle is three inches greater than twice its width. Its area is 90 square inches. Find its dimensions.
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
Let 
represent the width. Then 
is the length. The area is the length times the width.
So:
w\ =\ 90)
Distribute, add -90 to both sides, then solve the factorable quadratic. Since you are looking for a length measurement, discard the negative root.
Once you have a value for , calculate
John
My calculator said it, I believe it, that settles it
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