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Mathematics 21 Online
OpenStudy (anonymous):

what is the equation of a circle with center (2,-3) and radius 3

OpenStudy (freckles):

\[\text{ the equation of a circle with center } (h,k) \text{ and radius } r \\ \text{ can be written as } (x-h)^2+(y-k)^2=r^2 \]

OpenStudy (freckles):

you are given h,k, and r just plug in

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