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shepuryov [24]
3 years ago
15

An equation of a circle is given as (x + 6)^2 + (y − 7)^2 = 81. Find the center and radius of the circle.

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
6 0

Answer:

(-6, 7), r=9

Step-by-step explanation:

The opposite of the number next to the x is -6, the opposite of the number next to the y is 7.  The square root of the number on the right (81) is 9, so 9 is the radius.

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A scientist measures the mass of Substance A as 1.789 grams. She measures the mass of Substance B as 2.185 grams. How much great
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