SOLUTION: the length of a rectangle is 8cm less than three times its width. its area is 35 square cm. find the dimensions of the rectangle

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Question 1060825: the length of a rectangle is 8cm less than three times its width. its area is 35 square cm. find the dimensions of the rectangle
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
x and 3x-8 are the dimensions;
x%283x-8%29=35

3x%5E2-8x-35=0

x=%288%2B-+sqrt%288%5E2%2B4%2A3%2A35%29%29%2F%282%2A3%29
x=%288%2B-+sqrt%28484%29%29%2F%282%2A3%29

x=%288%2B22%29%2F%282%2A3%29
x=%284%2B11%29%2F3
highlight%28x=5%29-----WIDTH
Length is 7.