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Mathematics 15 Online
OpenStudy (anonymous):

Which of the following circles lie completely within the fourth quadrant? Check all that apply. A. (x - 9)2 + (y + 9)2 = 16 B. (x - 5)2 + (y + 5)2 = 9 C. (x - 2)2 + (y + 7)2 =64 D. (x - 12)2 + (y + 0)2 = 72

OpenStudy (xapproachesinfinity):

the center of the circle should be like this (+.-1) so it can lie in the fourth quadrant

OpenStudy (anonymous):

so its b

OpenStudy (xapproachesinfinity):

well you still have to consider the radius?

OpenStudy (anonymous):

o yea

OpenStudy (anonymous):

@ganeshie8

OpenStudy (xapproachesinfinity):

it looks A,B are satisfying the conditions? can you check?

OpenStudy (anonymous):

its both

OpenStudy (xapproachesinfinity):

Yes, Both lie in the fourth quadrant

OpenStudy (xapproachesinfinity):

if the radius was big it wouldn't, would it?

OpenStudy (anonymous):

well yea

OpenStudy (xapproachesinfinity):

Okay so you agree it's both?

OpenStudy (anonymous):

yea

OpenStudy (xapproachesinfinity):

Good, we done then^^

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