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HELP FAST !!!!!!!!! 25 points!!!! The length of a rectangle is 1 ft less than twice the width, and the area of the rectangle is 21 ft ^2. Find the dimensions of the rectangle.
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HELP FAST !!!!!!!!! 25 points!!!!

The length of a rectangle is 1 ft less than twice the width, and the area of the rectangle is 21 ft ^2. Find the dimensions of the rectangle.

User Gzc
by
6.8k points

1 Answer

4 votes
(2x-7)(x+4)=0
x=3.5,-4. Only 3.5 makes sense.
2x+1=8
That area is 28 ft^2
width is 3.5 feet and length is 8 feet.
User Clemahieu
by
7.4k points
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