Answer:
12
Step-by-step explanation:
This thing to know about this question is that angle 1 and angle 3 are actually the same.
When two lines intersect, the opposite angles such as that shown in 1 and 3 are equal to each other.
So what you can do is set angle 1 and 3 equal to each other like so:
5x+10 = 70
Then solve for x
5x+10 = 70
5x = 60
x = 12
Answer:
B
Step-by-step explanation:
Answer:
4 19/20
Step-by-step explanation:
9 1/4 + 5 4/5 = 15 1/20
20- 15 1/20 = 4 19/20
