Mathematics, 23.07.2019 02:30 probro1167
What is the center of the circle represented by this equation? x2 + (y + 9)2 = 25 a) (3, 5) b) (0, 25) c) (9, 25) d) (0, -9)
Answers: 1
![\bf \textit{equation of a circle}\\\\ (x- h)^2+(y- k)^2= r^2 \qquad center~~(\stackrel{}{ h},\stackrel{}{ k})\qquad \qquad radius=\stackrel{}{ r}\\\\ -------------------------------\\\\ x^2+(y+9)^2=25\implies [x-\stackrel{h}{0}]^2+[y-\stackrel{k}{(-9)}]^2=\stackrel{r}{5^2}\qquad \qquad \quad \stackrel{center}{(0,-9)}](/tpl/images/0121/7989/72c0a.png)
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What is the center of the circle represented by this equation? x2 + (y + 9)2 = 25 a) (3, 5) b) (0,...
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