Answer:
The radius is 6!
Explanation:
We know that both OA and OB lay on the circle, and O is the center.
In this equation you are trying to find O. We also know that OA = OB.
2x + 9 = 27 - x
2x = 18 - x (subtracted 9 from each side)
3x = 18 (added 1x to each side)
x = 6 (divided both sides by 3, to find x)
I hope this helps you! Comment if more help is needed :-)
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