Answer:
x = 5 inches
Step-by-step explanation:
The area of a triangle is = (1/2) (base)(height)
base = (2x+4)
height = (x+3)
(1/2)(2x+4)(x+3) = 56 in^2
(1/2)*(2x^2 + 10x + 12) = 56 in^2
x^2 + 5x + 6 = 56 in^2
x^2 + 5x -50 = 0
(x+10)(x-5) = 0
Solutions are -10 and 5 inches
Assuming the triangle is in Earth's dimensional framework, we'll go with x = 5 inches
