SOLUTION: the length of a 15 square cm rectangle is 1cm longer then twice the width

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Question 1193297: the length of a 15 square cm rectangle is 1cm longer then twice the width

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
and what do you want?


Length is 2w+1 for width w.
Area was given as 15 square centimeters.

w%282w%2B1%29=15

2w%5E2%2Bw-15=0
w=%28-1%2Bsqrt%281%5E2-4%2A2%2A%28-15%29%29%29%2F%282%2A2%29
w=%28-1%2Bsqrt%28121%29%29%2F%282%2A2%29
w=%28-1%2B11%29%2F%282%2A2%29
w=10%2F%282%2A2%29
w=5%2F2
highlight%28w=2%261%2F2%29