benchang1467 benchang1467

02-01-2018
Mathematics

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Find the center and radius of the circle. (x − 1)2 + (y + 3)2 = 49

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anchitthawi anchitthawi

02-01-2018

actually the formula is
(x-a)^2 + (y-b)^2 = r^2

so the center of this circle is (a,b) = (1, -3)
and radius of this circle is 7.

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