Question

4. The height of a triangle is 3 less than twice

the base. If the area is 10 square centimeter.
what are the dimensions of the triangle?
(4 pts)

Answer 1

h: 5 cm

b: 4 cm

A = 10 cm^2

Explanation:

h = 2x - 3

b = x

A = 10

A = (b * h)/2

10 = [x (2x-3)/2

20 = 2x^2 -3x

2x^2 - 3x -20 = 0

x = -2.5 or x = 4

h = 4