spiccegirl7 spiccegirl7

25-06-2018
Mathematics

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The center of circle (x+2)^2+(y-2)^2=9 is (-2,2) . TRUE OR FALSE ?!!

Respuesta :

27-06-2018

The standard formula of a circle:
[tex](x-h)^2+(y-k)^2=r^2[/tex]
r - a radius(h; k) - coordinates of a center
We have:
[tex](x+2)^2+(y-2)^2=9[/tex]
Therefore:
The center: (-2; 2)The radius: r² = 9 → r = √9 → r = 3
Answer: TRUE

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