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Please help me i need it bad
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Please help me i need it bad

Please help me i need it bad-example-1
User Berry Blue
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Using the secant-secant theorem,


(13x+7-60)/(2)=5x-10 \\ \\ 13x-53=10x-20 \\ \\ 3x-53=-20 \\ \\ 3x=33 \\ \\ \boxed{x=11} \\ \\ \\ \\ \angle RDB=5(11)-10=\boxed{45^(\circ)}

User Dan Klos
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