Answer:
x=10
Explanation:
2x+9=4x-11
-2x -2x
9=2x-11
+11 +11
20=2x
:2 :2
C: x = 10
PO = QR (so having equal central angles)
Now
4x-11 = 2x+9
4x-2x = 9+11
2x = 20
Dividing both sides by 2
x = 10
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