A circle has the following equation:
Which statement is true for the circle?
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OpenStudy (anonymous):
OpenStudy (anonymous):
myininaya (myininaya):
\[(x-h)^2+(y-k)^2=r^2\]
(h,k) is center
r is radius
myininaya (myininaya):
\[(x-1)^2+(y+\frac{3}{2})^2=\frac{9}{4}\]
\[(x-1)^2+(y-\frac{-3}{2})^2=\frac{9}{4}\]
\[\text{ So what is } h?\]
\[\text{ what is } k? \]
\[\text{ what is } r^2? \]
myininaya (myininaya):
\[\text{ Once we find } r^2 , r \text{ can be found by talking square root of both sides }\]
But don't forget r is positive :)
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OpenStudy (anonymous):
81/16?
myininaya (myininaya):
Tell me what \[r^2\]
is ?
myininaya (myininaya):
Like \[r^2\]
is in the place of where that 9/4 is
So \[r^2=\frac{9}{4}\]
How did I say to solve this for r?
OpenStudy (anonymous):
uh idk
myininaya (myininaya):
I said r can be found by taking square root of both sides
Don't forget r is positive
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OpenStudy (anonymous):
idk why i can't think T.T so both sides of the equal sign?