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OpenStudy (anonymous):
The altitude of a triangle is 5 m less than its base. The area of the triangle is 42 m^2. Find the length of the base.
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OpenStudy (anonymous):
LOL very nice h = b - 5 (1/2)*b*h = area (1/2)*b*h = 42 b(b - 5) = 84 b^2 - 5b - 84 = 0 (b + 7)(b - 12) b = -7, 12 b has to be positive because it's the length so be is 12
OpenStudy (anonymous):
oh okay i get now thank you
OpenStudy (anonymous):
no problem
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