A rectangle has a length that is 10 less than 3 times the width. If the rectangle has an area of 8 square feet, what is the width of the rectangle?
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Answer:l = 3w - 10
A = 8 = lw
Substitute:
(3w - 10)w = 8
3w^2 - 10w - 8 = 0
w = 4
w = -.666 ignore this answer
I used the quadratic to solve...
l = 2
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