Question

Given: Triangle PQR with m∠P=(5x)° , m∠Q=(5x)° , and m∠R=(8x)° .

Answer 1

sum of the angles in a triangle = 180°

thus 5x + 5x + 8x = 180

18x = 180

divide both sides by 18

x = $\frac{180}{18}$ = 10

Answer 2

Answer:

Just took the test. The answer is in the screenshot below. :-)