Answer: 
Step-by-step explanation:
When two lines cross each other , then the opposite angles are known as vertical angles.
Vertical angles are equal.
Here, ∠A and ∠B are vertical angles.
So, ∠A = ∠B
If
and 
Then , 
Subtract 5x from both sides, we get

Add 11 on both sides, we get

Now , 
Hence, the measure of 
Answer:
y =8.7
Step-by-step explanation:
y + 8.5 = 17.2
Subtract 8.5 from each side
y +8.5-8.5 = 17.2 -8.5
y =8.7
Answer:
15x square units
Step-by-step explanation:
3x x 5 =
15x square units
Hope that helps!
It should add up to.
x= 0.312866