The area of a circle Q is 16 pi. If lines segment FC
is a diameter of circle Q and F Corresponds to
point (4,7) on the standard(x,y) coordinate
plane, which one of the following coordinates
could be point C?
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OpenStudy (aripotta):
ok, so we know that 16 is r^2. if we find the square root of 16, that'll give us the radius, and if we double that, we get the diameter
OpenStudy (aripotta):
then we can use the distance formula to find out where the other point would be
OpenStudy (anonymous):
k
OpenStudy (aripotta):
OpenStudy (anonymous):
so
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OpenStudy (anonymous):
could (0,7) be a point?
OpenStudy (anonymous):
or
OpenStudy (anonymous):
ahh
OpenStudy (anonymous):
you said the diameter was 8, right?
OpenStudy (anonymous):
so (4,-1) could be a point since it is eight spaces away from (4,7), right?
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OpenStudy (anonymous):
you there?
OpenStudy (aripotta):
yea, i'm trying to work it out lol
OpenStudy (aripotta):
ugh i have no idea.
OpenStudy (anonymous):
well
OpenStudy (anonymous):
the diameter is 8, right?
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OpenStudy (aripotta):
yea
OpenStudy (anonymous):
(4,7) corresponds to the diamter FC
OpenStudy (anonymous):
so(4,7) go move eight spaces down to (4,-1), right?
OpenStudy (aripotta):
i guess that could work
OpenStudy (aripotta):
we have no idea if FC is going up and down or left to right or any which way
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OpenStudy (anonymous):
Read the question again
OpenStudy (anonymous):
read the last 10 words
OpenStudy (aripotta):
oh, so what's our choices?
OpenStudy (anonymous):
what could be point C?
OpenStudy (anonymous):
(0,7),(4,-1),(4,3),(8,7),(12,15)?
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OpenStudy (anonymous):
our original point is (4,7)
OpenStudy (anonymous):
think about the diameter 8
OpenStudy (aripotta):
(4,-1)
OpenStudy (anonymous):
yep
OpenStudy (aripotta):
that could work
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OpenStudy (aripotta):
see, you don't need my help lol. you figured that out yourself
OpenStudy (anonymous):
yeah
OpenStudy (anonymous):
but I like your help
OpenStudy (anonymous):
next problem
OpenStudy (aripotta):
i can't do any more until after 8
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OpenStudy (aripotta):
i scheduled a DBA for between 6 and 8 and i have no idea when she's gonna call
OpenStudy (anonymous):
Florida Virtual?
OpenStudy (aripotta):
she's calling now -_-
OpenStudy (aripotta):
yea, flvs. and she said i wasn't ready for it. that i have to study -_- how annoying