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OpenStudy (anonymous):
Write the equation of a circle whose center is at the origin and contains the point (7, 0).
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OpenStudy (anonymous):
\[x^2+y^2=49\]
OpenStudy (anonymous):
|dw:1335672263013:dw|from the picture we can see that the radius of the circle is 7, therefore the equation of the circle is\[x^2 + y^2 = 7^2\]\[x^2 + y^2 = 49\]
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