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



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mjneedshelp
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Sandeez
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circles 1 and 3 are definitely out

mjneedshelp
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ok

mysesshou
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i say #2 since center is at (5,2) and the radius is 3

campbell_st
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its the middle circle...

Sandeez
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agreed. as for #4, find the midpoint between where the circle crosses the yaxis. and you can see if that's 2 or not.

mysesshou
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true, #4 is probably at 5,2, but i think it is too big.

Sandeez
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what is the midpoint of 9.5 and 5.5?

mysesshou
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(9.5+5.5 )/2

campbell_st
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add the two values and have it
9.5 + 5.5 = 4 half of 4 = 2

mysesshou
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*oops missed typing negative...

mjneedshelp
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so #4 is the right one

mysesshou
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but the radius is more than 3

Sandeez
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oh yeah. i forgot that detail!

Sandeez
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sorry! well, good to understand how to find the center anyway.

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