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anonymous
 5 years ago
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.
anonymous
 5 years ago
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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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0LOL 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

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0oh okay i get now thank you
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