anonymous
  • anonymous
A circle is centered at (−4, −6) and has a radius of 3. Which of the following is the equation for this circle? (x + 4)^2 + (y + 6)^2 = 3 (x − 4)^2 + (y − 6)^2 = 9 (x − 4)^2 + (y − 6)^2 = 3 (x + 4)^2 + (y + 6)^2 = 9
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
any help? stuck on this
anonymous
  • anonymous
A?
anonymous
  • anonymous
Clarification: are those expression being squared?

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anonymous
  • anonymous
yes
lstrasmann
  • lstrasmann
It would be D. (x-h)^2 + (y-k)^2 = r^2 is the equation of a circle.
lstrasmann
  • lstrasmann
Assuming (h,k) is the center.
anonymous
  • anonymous
Thank you
lstrasmann
  • lstrasmann
Of course.
Victoriasushchik
  • Victoriasushchik
(h,k) is the center. r is the radius. So in your first example, (x+2)2+(y−3)2=10 We would rewrite that like this so that it fits the form I posted: (x−−2)2+(y−3)2=(10−−√)2 So now we see that h is -2, k is 3 and r is sqrt(10) That means that the center of the circle is (-2,3) and the radius is sqrt(10)

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