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9 April, 10:35

Write the equation of the circle with center (-11, 3) and radius r = 9. Use the ^ key for the exponents. Write your answer as the example:

(x - 4) ^2 + (y+8) ^2=25

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  1. 9 April, 10:37
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    The equation of a circle with center (a, b) and radius = r is given by (x - a) ^2 + (x - b) ^2 = r^2

    If center is (-11, 3) and radius is 9, then equation is

    (x - (-11)) ^2 + (y - 3) ^2 = 9^2

    (x + 11) ^2 + (y - 3) ^2 = 81
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