SOLUTION: i have a worded problem that i cannot do. it goes like this: A triangles base is x cm and the height is 3cm shorter than the base if the area is 20 what is the value of x. I have

Question 14834: i have a worded problem that i cannot do. it goes like this:
A triangles base is x cm and the height is 3cm shorter than the base if the area is 20 what is the value of x.
I have worked out the answer but i dont know how to get to it.
please help me
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
Let x = base of triangle
x-3 = height of triangle

Area =

Multiply both sides by 2 to clear the fraction:

Quadratic equation, so set equal to zero:

x=8 base
x-3= 5 height
Reject x=-5, since the base of a triangle cannot be negative.

R^2 at SCC
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