Question

Please help ASAP! What is m∠A

Answer 1

A triangle's angles always add up to 180, so you can add them together and set them equal to 180:

3x + 13 + x + x - 8 = 180

Combine like terms:

5x + 5 = 180

Now get the variable separate from the numbers by subtracting 5 from each side:

5x = 175

Divide by 5 to solve for x:

x = 35

Now plug in 35 for x to solve for angle A:

3(35) + 13 = 118

The measure of angle A is 118 degrees

Hope that helped