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Match the pairs of equations that represent concentric circles. 3x2 + 3y2 + 12x − 6y − 21 = 0 5x2 + 5y2 − 10x + 40y − 75 = 0 5x2 + 5y2 − 30x + 20y − 10 = 0 4x2 + 4y2 + 16x − 8y − 308 = 0 x2 + y2 − 12x

asked May 21, 2017

Mathematics
high-school

2 answers

5 votes

45.8k views

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