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The equation of a circle is x2 + y2 + 6y = 7. What are the coordinates of the center and the length of the radius of the circle?

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  1. 6 May, 14:40
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    Step-by-step explanation:

    x2+y2+6y + (9-9) = 7

    x2+y2+6y+9=16

    x2 + (y+3) 2=16

    center: (0,-3)

    r:4
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