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Which equation represents a circle with a center at (2, –8) and a radius of 11?

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Answer:

(x - 2)^2 + (y + 8)^2 = 121

Explanation:

Given the coordinates of the circle's center and its radius, we can write the equation of the circle in standard form, whose general equation is given by:

(x - h)^2 + (y - k)^2 = r^2, where

  • (h, k) are the coordinates of the center,
  • and r is the radius.

Thus, we substitute 2 for h, -8 for k, and 11 for r. Then we simplify:

(x - 2)^2 + (y - (-8))^2 = 11^2

(x - 2)^2 + (y + 8)^2 = 121

Therefore, (x - 2)^2 + (y + 8)^2 = 121 represents a circle with a center at (2, -8) and a radius of 11.

User SMNALLY
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