Question

Find the measure of the remote exterior angle. mZx = (6n – 20)°

mzy = (5n + 11)
mZz = (171 - nº
Х
Z
A. 70
B. 86
C. 156
D. 15

Answer 1

z = 156

Explanation:

x+y = z

6n - 20 + 5n+11 = 171 -n

Combine like terms

11n -9 = 171 -n

Add n to each side

12n -9 = 171

Add 9 to each side

12n = 180

Divide by 12

n = 15

Z = 171 - n

z = 171- 15

z =156