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  • 12-05-2020
  • Mathematics
contestada

which equation represents a circle with a radius of 7 and a center with coordinates (-2,5)?

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Аноним Аноним
  • 12-05-2020

Answer:

The equation is:

[tex](x+2)^2+(y-5)^2=49[/tex] (simplified if needed)

or

[tex](x+2)^2+(y-5)^2=7^2[/tex]

Step-by-step explanation:

The equation of a circle is :

[tex](x-h)^2+(y-k)^2=r^2[/tex] where the center is [tex](h,k)[/tex] and radius [tex]r[/tex].

-So, putting the radius 7 and the center (-2,5) on the equation, would be:

[tex](x+2)^2+(y-5)^2=7^2[/tex]

-when you put them onto that equation, the radius needs to be simplified by the exponent if needed:

[tex](x+2)^2+(y-5)^2=49[/tex]

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