Answer:
Emily, use the circle formula to solve this (x−a)^2 + (y−b)^2 = r^2
Step-by-step explanation:
where a and b are the center off sets in the x and y directions , repspectively.
(x - 5)² + (y + 2)² =81/4
So you now know, the center is at (x,y) = ( 5, 2)
and the radius is [tex]\sqrt{\frac{81}{4} }[/tex] , why is is square rooted ? you ask.
because in our formula above it's r^2 .. so we need to square root it to find it's value.
[tex]\frac{\sqrt{81} }{\sqrt{4} }[/tex] = [tex]\frac{9}{2}[/tex] = 4.5 rounded to two decimals 4.50 but not necessary
