Answer:
45 degrees
Step-by-step explanation:
We know that angle 4 equals angle 2 because corresponding angles are congruent.
So x+30 = 2x+15,
We subtract 15 from both sides,
x + 30 - 15 = 2x + 15 - 15
x + 15 = 2x
Now we subtract x from both sides,
x - x + 15 = 2x - x
15 = x
x = 15 degrees
So we plug this in angle 4,
15 + 30 = 45 degrees
