3 years ago

3. The equation of a circle is x^2+y^2-4x+2y-11=0 . What are the center and the radius of the circle? Show your work.

1 answer:

7 0

Rewrite in standard form to find the center (h,k) and redius r.
center: (2,-1)
Radius:4
have a great day!!!

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pychu [463]

Answer:

k = 13.5

Step-by-step explanation:

Setup proportion and solve for k:

$\frac{k}{9} =\frac{4.5}{3} \\3k = 40.5\\k=13.5$

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Anna [14]

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Lady_Fox [76]

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We have

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1 year ago