Answer:
C) 100°
Step-by-step explanation:
the angles are actually alternate exterior angles, which means that they're equal.
Answer:
5
Step-by-step explanation:
-a+3a= 10
2a=10
a=10/2
a=5
Answer:
_
Step-by-step explanation:
60=3
x. 2
3x=60×2
3x=120
x=120÷3
x=40
therefore,the value of x is 40