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mjneedshelp

Circle D has a radius of 3 units with center D at (5, -2). Which graph represents circle D?

  • 2 years ago
  • 2 years ago

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  1. mjneedshelp
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    • 2 years ago
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  2. Sandeez
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    circles 1 and 3 are definitely out

    • 2 years ago
  3. mjneedshelp
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    ok

    • 2 years ago
  4. mysesshou
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    i say #2 since center is at (5,-2) and the radius is 3

    • 2 years ago
  5. campbell_st
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    its the middle circle...

    • 2 years ago
  6. Sandeez
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    agreed. as for #4, find the midpoint between where the circle crosses the y-axis. and you can see if that's -2 or not.

    • 2 years ago
  7. mysesshou
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    true, #4 is probably at 5,-2, but i think it is too big.

    • 2 years ago
  8. Sandeez
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    what is the midpoint of -9.5 and 5.5?

    • 2 years ago
  9. mysesshou
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    (9.5+5.5 )/2

    • 2 years ago
  10. campbell_st
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    add the two values and have it -9.5 + 5.5 = -4 half of -4 = -2

    • 2 years ago
  11. mysesshou
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    *oops missed typing negative...

    • 2 years ago
  12. mjneedshelp
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    so #4 is the right one

    • 2 years ago
  13. mysesshou
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    but the radius is more than 3

    • 2 years ago
  14. Sandeez
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    oh yeah. i forgot that detail!

    • 2 years ago
  15. Sandeez
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    sorry! well, good to understand how to find the center anyway.

    • 2 years ago
  16. mysesshou
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    that's why the teacher puts multiples that might be right, but there is only one that fits all details :) true. finding center is useful

    • 2 years ago
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