Question

Engage and Persevere The measure of ∠A in △ABC is twice the measure of ∠B , and the measure of ∠C is 20° less than the measure of ∠B . What are the measures of the angles in △ABC ?

Answer 1

Answer:

A = 100

B = 50

C = 30

Step-by-step explanation:

You can make this equation to solve:

2x+x+x-20=180

4x-20=180

   +20  +20

4x=200

divide both sides by 4

200/4 = 50

x=50, B = x = 50

2x = 100 = A

x-20 = 30 = C