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  • 19-11-2016
  • Mathematics
contestada

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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nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 21-11-2016
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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