Question

I need help Asap, If you could also have an explanation that would awesome!

Answer 1

Angle A = 120

Angle C = 45

Explanation:

First, you need to find the value of x. To do this, we must set up our equation to find x. You know that the sum of angles of a triangle is 180 degrees, and you are given the three angles. So, you can write:

(12x+12) + 15 + (3x+18) = 180

Simplifying and combining, we get

15x + 45 = 180

and then

x = 9

So, now you plug 9 back for x, and (12 * 9 + 12) = 120 degrees (for angle A)

(3 * 9 + 18) = 45 degrees (angle C).

If you want to check, 120 + 45 + 15 = 180, which is correct.