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anonymous

  • one year ago

Please help!!!!! MEDAL AND FAN!!!!! Give the center coordinates (x,y) of the circle:

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  1. anonymous
    • one year ago
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    \[(x+3)^{2}+(y-4)^{2}=36\]

  2. triciaal
    • one year ago
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    equation of a circle (x-h)^2 + (y-k)^2 = r^2 center (h,k) and radius r

  3. anonymous
    • one year ago
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    Center = (-3,4) This is because, as triciaal said, in the equation (x+3)2+(y−4)2=36, 3=h and 4=k (H,K) are the coordinates of the center.

  4. anonymous
    • one year ago
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    Oh ok

  5. amilapsn
    • one year ago
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    The definition of the circle is: the loci of a point which is moving at constant distance from a fixed point. So if the point is (h, k) and the constant distance is r, by the distance formula: \[\sqrt{(x-h)^2+(y-k)^2}=r\] After squaring, equation of the circle: \[(x-h)^2+(y-k)^2=r^2\]

  6. anonymous
    • one year ago
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    When multiplied out, we obtain the "general form" of the equation of a circle. Notice that in this form we can clearly see that the equation of a circle has both x2 and y2 terms and these terms have the same coefficient (usually 1).

  7. anonymous
    • one year ago
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    Wait so which explanation should I go with because I a bit confused

  8. anonymous
    • one year ago
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    @ikram002p

  9. triciaal
    • one year ago
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    all are correct! different amount of details.

  10. anonymous
    • one year ago
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    ok thx

  11. anonymous
    • one year ago
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    yeah there all the same

  12. anonymous
    • one year ago
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    But..... the first time I did this problem, I put -3,4 for my answer and got it wrong

  13. freckles
    • one year ago
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    ordered pairs should be in the form (h,k) that is you should have (-3,4)

  14. freckles
    • one year ago
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    Maybe they already included the ( ). Don't know.

  15. anonymous
    • one year ago
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    oh ok I will put it in parentheses

  16. anonymous
    • one year ago
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    Could y'all help me on on more problem?

  17. anonymous
    • one year ago
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    *one

  18. anonymous
    • one year ago
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    Sure!

  19. anonymous
    • one year ago
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    \[(x + 1)^{2} + (y - 6)^{2}= 2.25\]

  20. anonymous
    • one year ago
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    Would the coords be (-1,6)?

  21. freckles
    • one year ago
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    yes the center would be (-1,6)

  22. anonymous
    • one year ago
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    Absolutly right!

  23. anonymous
    • one year ago
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    thx

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