Question

Pls help quickly I don’t have a lot of time

Answer 1

Answer: x=30

Explanation:

There's a 90-degree angle given so first do 360-90= 270 which is the retainer of the measures. Then 4x+5x = 9x so 9x=270

So 270 divided by 9 and 9x divided by 9, to get the x by itself

which equals 30.