manndapreece manndapreece

10-04-2020
Mathematics

contestada

what’s the radius of a circle (x+2)^2 + (y-5)^2=9

Respuesta :

jimthompson5910 jimthompson5910

10-04-2020

Answer is 3

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Explanation:

The equation

(x+2)^2 + (y-5)^2=9

is the same as

(x-(-2))^2 + (y-5)^2=3^2

Compare this to

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

We see the center is (h,k) = (-2,5) and the radius is r = 3.

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