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anonymous

  • 5 years ago

A circle is defined by the following equation: x^(2)+y^(2)-8x+14y+47=0 What are the coordinates of its center?

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  1. anonymous
    • 5 years ago
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    (4,-7) :P

  2. anonymous
    • 5 years ago
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    How did you get that so fast?

  3. anonymous
    • 5 years ago
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    magic :p

  4. anonymous
    • 5 years ago
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    Okay magician, a circle is defined by the following equation: 3x^(2)+3y^(2)+30x+30y+150=0 What is its radius?

  5. anonymous
    • 5 years ago
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    now the radius takes a little longer lol

  6. anonymous
    • 5 years ago
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    x^2 +Y^2 +10X + 10Y + 50 =0 X^2 +10X+25 +Y^2 + 10Y + 25 + 50 =0 (X+5)^2 +(Y+5)^2 +50 =0

  7. anonymous
    • 5 years ago
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    wait

  8. anonymous
    • 5 years ago
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    should be (x+5)^2 +(y+5)^2 =0, WHICH IS NOT A CIRCLE

  9. anonymous
    • 5 years ago
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    So then is 0 not the answer?

  10. anonymous
    • 5 years ago
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    how can u have a circle of zero radius :P

  11. anonymous
    • 5 years ago
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    a small one :)

  12. anonymous
    • 5 years ago
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    idk, i have this as a qustion. it doesn't make sence.

  13. anonymous
    • 5 years ago
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    teacher made a mistake

  14. anonymous
    • 5 years ago
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    It's a computer program though.

  15. anonymous
    • 5 years ago
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    well, its not a circle , a sum of sqaures cannot be zero ( in the real numbers anyway )

  16. anonymous
    • 5 years ago
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    well, its not a circle , a sum of sqaures cannot be zero ( in the real numbers anyway )

  17. anonymous
    • 5 years ago
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    the answer is definately not zero

  18. anonymous
    • 5 years ago
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    would you say it is 10?

  19. anonymous
    • 5 years ago
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    no I would say its not a circle

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spraguer (Moderator)
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