Answer:
x = 30
Step-by-step explanation:
If the angles are supplementary, that means that they add up to 180°.
That means 40 + 4x + 20 = 180°
Simplify: 60 + 4x = 180
Subtract: 4x = 120
Divide: x = 30
Answer:
C. b>-9
Step-by-step explanation:
subtract 7 from both sides.
Answer:
Step-by-step explanation:
