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shesolitt

  • one year ago

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

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  1. anonymous
    • one year ago
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    The equation of this circle is (x-h)^2 + (y-k)^2= r^2 Plug the values in and boom

  2. shesolitt
    • one year ago
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    im still confused ): ?? /: @willet

  3. anonymous
    • one year ago
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    Okay, in this case, 5 is h and -9 is k and 12 is r

  4. anonymous
    • one year ago
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    If you input those value into that equation and simplify, you should get your answer

  5. shesolitt
    • one year ago
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    so then the answer would be A? @Ryan361

  6. anonymous
    • one year ago
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    Well, you have r^2 so it would be 12^2 which is 144

  7. anonymous
    • one year ago
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    other than that you are right

  8. shesolitt
    • one year ago
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    actually i wrote the question wrong. its D

  9. shesolitt
    • one year ago
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    I meant i wrote the answers wrong

  10. shesolitt
    • one year ago
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    i corrected them. so my answer is D ? @Ryan361

  11. anonymous
    • one year ago
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    I'm getting B

  12. shesolitt
    • one year ago
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    But the 5 isnt a negative ... @Ryan361 only the 9 is

  13. anonymous
    • one year ago
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    The equation you put the numbers into makes it negative

  14. anonymous
    • one year ago
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    (x-h)^2 + (y-k)^2= r^2 It's "x-h" h is 5. so, x-5

  15. shesolitt
    • one year ago
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    ohh ok thank you!!! (((((:::: @Ryan361

  16. anonymous
    • one year ago
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    You're welcome

  17. shesolitt
    • one year ago
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    can you help me with one more ? @Ryan361

  18. anonymous
    • one year ago
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    You just gotta be careful with signs, it's really easy to accidentally do make a mistake

  19. anonymous
    • one year ago
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    Yea, I can try depends on what it is

  20. shesolitt
    • one year ago
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    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

  21. shesolitt
    • one year ago
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    @sleepyhead314

  22. anonymous
    • one year ago
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    I'm pretty sure it's B

  23. sleepyhead314
    • one year ago
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    http://www.mathsisfun.com/geometry/construct-trianglecircum.html

  24. shesolitt
    • one year ago
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    yes i agree thankssss @Ryan361

  25. anonymous
    • one year ago
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    Welcome

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