Question

Help with this question, please!! I don't understand!!

Answer 1

h = (2x - 6) m

Explanation:

Area of a triangle:

A = 1/2 b h

2A = hb

so h = 2A/b

Plug in

h = 2(x^2 - 9) / (x + 3)

= 2 (x + 3)(x - 3) / (x + 3)

= 2 (x - 3)

= 2x - 6

Answer

h = (2x - 6) m

Answer 2

the answer is correct answer c. I=(2x - 3) m