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mjneedshelp

  • 4 years ago

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

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

  3. mjneedshelp
    • 4 years ago
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    ok

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

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

  6. Sandeez
    • 4 years ago
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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.

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

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

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

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

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

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

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

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

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

  16. mysesshou
    • 4 years ago
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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

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