SOLUTION: the height of a triangle is 3 inches more than twice its base. if the area of the triangle is 15 square inches find the base and height of the triangle

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Question 859354: the height of a triangle is 3 inches more than twice its base. if the area of the triangle is 15 square inches find the base and height of the triangle
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let base be x
height = 2x+3
area = 1/2 * b * h
15= 1/2 * x* (2x+3)
30 = x(2x+3)
30 = 2x^2+3x
2x^2+3x-30=0
solve for x the base
x= 3.2