In the figure, angle ABC = 2x-65° and reflex angle AOC = 3x. Find x.

Answer:
x = 70
Step-by-step explanation:
The measure arc AC is twice as angle B
The center angle that sees arc is equal to the arc it sees
<B = 2x - 65 so the measure of arc AC is 4x - 130 since this is gonna complete 3x to 360°
4x - 130 + 3x = 360°
7x = 490
x = 70