Mathematics, 15.12.2019 17:31 nommies005
What is the radius of a circle with the equation (x ā 3)2 + (y ā 7)2 = 9? a) 3 b) 4.5 c) 6 d) 9
Answers: 2
![\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} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ (x-\stackrel{h}{3})^2+(y-\stackrel{k}{7})^2=9\implies (x-\stackrel{h}{3})^2+(y-\stackrel{k}{7})^2=\stackrel{r}{3^2}~\hfill \begin{cases} center~(3,7)\\ radius=3 \end{cases}](/tpl/images/0419/7043/05da6.png)
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What is the radius of a circle with the equation (x ā 3)2 + (y ā 7)2 = 9? a) 3 b) 4.5 c) 6 d) 9...
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