Vertical angles equal eachother
set angle 4 and angle 8 equal to eachother
3x=x+40
-x both sides
2x=40
÷2 both sides
x=20
solve for angle 4
3 (20)
60 B
Answer:
13
Step-by-step explanation:

Answer:
11.04 in taylor brown
Step-by-step explanation:
Answer:
3×2 + 3×-b
Step-by-step explanation:

Answer:
x = 5. y = 4
Step-by-step explanation:
7x - 4 = 31
7x = 35
x = 5
4y + 8 = 24
4y = 16
y = 4