Answer:
I think it is 90 degrees
Step-by-step explanation:
Line PQ and PS are perpendicular, meaning it would be 90 degrees.
Long way:
Plus, if you add both 7x-9 and 4x+22 with like terms, you get 11x+13, since it is perpendicular, 11x+13=90
Subtract 13 on both sides, you get 11x=77
x is 7 and inserting 7 would lead to 90.
