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lawyer [7]
3 years ago
13

A circle is described by the equation x2 + y2 + 14x + 2y + 14 = 0. What are the coordinates for the center of the circle and the

length of the radius?
A(-7, -1), 36 units
B(7, 1), 36 units
C(7, 1), 6 units
D(-7, -1), 6 units
Mathematics
1 answer:
TiliK225 [7]3 years ago
7 0
Hello : 
<span>x² + y² + 14x + 2y + 14 = 0
</span>(x²  + 14x) + (y²+ 2y) + 14 = 0
(x²  + 14x+49-49) + (y²+ 2y+1-1) + 14 = 0
(x²  + 14x+49)-49 + (y²+ 2y+1)-1 + 14 = 0
(x+7)² + (y+1)² =6²...(answer : <span>D(-7, -1), 6 units )</span>

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Nadusha1986 [10]
It’s a little complicated but here’s how it works:
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Answer:

Step-by-step explanation:

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5. ∠USR ≅ ∠SUT                           5. CPCTC

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