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kolbaska11 [484]
3 years ago
12

Find the center and radius of x^2+y^2=9

Mathematics
2 answers:
Valentin [98]3 years ago
7 0
(x-x_1)^2+(y-y_1)^2=r^2\\
\text{center}=(x_1,y_1)\\\\
x^2+y^2=9\\
(x-0)^2+(y-0)^2=9\\
\text{center}=(0,0)\\
r=\sqrt9=3

riadik2000 [5.3K]3 years ago
6 0
x^2+y^2=9\Leftrightarrow (x-0)^2+(y-0)^2=3^2 hence the center is (0,0) and the radius is 3
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