shesolitt
  • shesolitt
A circle is centered at (5, −9) and has a radius of 12. Which of the following is the equation for this circle? (x-5)^2+(y+9)^2=12 (x-5)^2+(y+9)^2=144 (x+5)^2+(y-9)^2=144 (x+5)^2+(y-9)^2=12
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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chestercat
  • chestercat
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anonymous
  • anonymous
The equation of this circle is (x-h)^2 + (y-k)^2= r^2 Plug the values in and boom
shesolitt
  • shesolitt
im still confused ): ?? /: @willet
anonymous
  • anonymous
Okay, in this case, 5 is h and -9 is k and 12 is r

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anonymous
  • anonymous
If you input those value into that equation and simplify, you should get your answer
shesolitt
  • shesolitt
so then the answer would be A? @Ryan361
anonymous
  • anonymous
Well, you have r^2 so it would be 12^2 which is 144
anonymous
  • anonymous
other than that you are right
shesolitt
  • shesolitt
actually i wrote the question wrong. its D
shesolitt
  • shesolitt
I meant i wrote the answers wrong
shesolitt
  • shesolitt
i corrected them. so my answer is D ? @Ryan361
anonymous
  • anonymous
I'm getting B
shesolitt
  • shesolitt
But the 5 isnt a negative ... @Ryan361 only the 9 is
anonymous
  • anonymous
The equation you put the numbers into makes it negative
anonymous
  • anonymous
(x-h)^2 + (y-k)^2= r^2 It's "x-h" h is 5. so, x-5
shesolitt
  • shesolitt
ohh ok thank you!!! (((((:::: @Ryan361
anonymous
  • anonymous
You're welcome
shesolitt
  • shesolitt
can you help me with one more ? @Ryan361
anonymous
  • anonymous
You just gotta be careful with signs, it's really easy to accidentally do make a mistake
anonymous
  • anonymous
Yea, I can try depends on what it is
shesolitt
  • shesolitt
What step is needed when constructing a circle circumscribed about a triangle? (1 point) Select one: a. Construct the angle bisectors of each angle in the triangle. b. Construct the perpendicular bisectors of each side of the triangle. c. Construct the midpoints of each side of the triangle. d. Construct the altitude of each angle in the triangle. @Ryan361
shesolitt
  • shesolitt
@sleepyhead314
anonymous
  • anonymous
I'm pretty sure it's B
sleepyhead314
  • sleepyhead314
http://www.mathsisfun.com/geometry/construct-trianglecircum.html
shesolitt
  • shesolitt
yes i agree thankssss @Ryan361
anonymous
  • anonymous
Welcome

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