A circle in the XY-plane has center (5, 7) and radius 2. Which of the following is an equation of the circle?

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asked Jun 8, 2021 114k views

1 Answer

SmuggledPancakes · Answer 1 · 2021-06-11T15:43:51+0000

Answer: A, because the equation of a circle is
(x-h)^2+(y-k)^2=r^2 . So, if the point of the center is
(5,7) and the radius
, then on the equation should be changed as negative and the radius should be multiplied as
, which is
(x-5)^2+(y-7)^2=4

A circle in the XY-plane has center (5, 7) and radius 2. Which of the following is an equation of the circle?

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