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What is the radius of the following circle? (x+5)2+(y-10)2=121
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What is the radius of the following circle? (x+5)2+(y-10)2=121

User Alessio
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Hint: (x + 10)^2 + (y + 15)^2 = 121 (x - (-10))^2 + (y - (-15))^2 = 121 (x - (-10))^2 + (y - (-15))^2 = 11^2 Compare the last equation to (x-h)^2+(y-k)^2=r^2
User Hortitude
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