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vodka [1.7K]
2 years ago
9

What are the center and radius of the circle defined by the equation ?

Mathematics
2 answers:
tensa zangetsu [6.8K]2 years ago
8 0
It might be B im not sure

Andrew [12]2 years ago
8 0
X^2 - 6x + y^2 + 8y + 21 = 0
(x - 3)^2  - 9 + (y + 4)^2 - 16  = -21

(x - 3)^2 + (y + 4)^2 =  -21 + 9 + 16 =  4

so center is at (3,-4) and radius = sqrt4 = 2

Answer is A

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