SOLUTION: the width of a retangle is 1ft less than the length, the area is 30ft^2. find the length and the width. the width is: the length is:

Algebra ->  Rational-functions -> SOLUTION: the width of a retangle is 1ft less than the length, the area is 30ft^2. find the length and the width. the width is: the length is:      Log On


   

Question 497679: the width of a retangle is 1ft less than the length, the area is 30ft^2. find the length and the width.
the width is:
the length is:
Answer by solver91311(24713) About Me  (Show Source):
You can put this solution on YOUR website!


Just off the top of my head, I would guess 5 feet by 6 feet. But let's check on my intuition.

Let represent the width. Then must represent the length. And since the area is 30 square feet:





Solve the quadratic for , then calculate .

Was my guess correct?

Extra Credit. Solve the same problem using to represent the length and to represent the width.

John

My calculator said it, I believe it, that settles it
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