ryanez9965 ryanez9965
  • 03-04-2019
  • Mathematics
contestada

A circle has a radius of 4/9 units and is centered at (-6.2,5.8). Write an equation of this circle

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MrsStrong
MrsStrong MrsStrong
  • 12-04-2019

Answer:

[tex](x+6.2)^2 + (y-5.8)^2 = \frac{16}{81}[/tex]

Step-by-step explanation:

The vertex form of the equation of a circle is [tex](x-h)^2 + (y-k)^2 = r^2[/tex] where (h,k) is the center of the circle and r is the radius. This circle has center (-6.2, 5.8) and r= 4/9. Substitute h = -6.2, k = 5.8 and r = 4/9 into the vertex form. Then simplify for the equation.

[tex](x-h)^2 + (y-k)^2 = r^2\\(x--6.2)^2 + (y-5.8)^2 = \frac{4}{9}^2\\ (x+6.2)^2 + (y-5.8)^2 = \frac{16}{81}[/tex]

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