please refer to above attachment ↑↑
In y=mx+b, m is the slope and b is the y intercept.
Slope: -2
Y-int: (0,8)
The 3 inside angles of a triangle need to = 180 degrees
you are given 70 and 80 which = 150 degrees ( 70 +80 = 150)
so the missing angle (PQR) = 180 - 150 = 30 degrees
Answer 3,5,7
Step-by-step explanation:
dont know wish i could help you :( sorry i hate when i can't answer a question it makes me feel bad