Gosh ha bhdhhs you bhdhhs
The equation of a cricle passing through (h,h) and with radius r is
![(x-h)^2+(y-k)^2=r^2](https://tex.z-dn.net/?f=%28x-h%29%5E2%2B%28y-k%29%5E2%3Dr%5E2)
so
cente ris (-6,7) and passing through (4,-2)
![(x-(-6))^2+(y-7)^2=r^2](https://tex.z-dn.net/?f=%28x-%28-6%29%29%5E2%2B%28y-7%29%5E2%3Dr%5E2)
![(x+6)^2+(y-7)^2=r^2](https://tex.z-dn.net/?f=%28x%2B6%29%5E2%2B%28y-7%29%5E2%3Dr%5E2)
subsitute (4,-2) to find r^2
![(4+6)^2+(-2-7)^2=r^2](https://tex.z-dn.net/?f=%284%2B6%29%5E2%2B%28-2-7%29%5E2%3Dr%5E2)
![(10)^2+(-9)^2=r^2](https://tex.z-dn.net/?f=%2810%29%5E2%2B%28-9%29%5E2%3Dr%5E2)
![100+81=r^2](https://tex.z-dn.net/?f=100%2B81%3Dr%5E2)
![181=r^2](https://tex.z-dn.net/?f=181%3Dr%5E2)
so it is
![(x+6)^2+(y-7)^2=181](https://tex.z-dn.net/?f=%20%28x%2B6%29%5E2%2B%28y-7%29%5E2%3D181)
A is the answer
The answers is 2y+4/9
Hope that helps!! :)
So,
We know that we cannot add or subtract quantities of the same kind.
-18xy can only be added/subtracted to 4yx, which is the same as 4xy. The result would be -14xy, or -14yx.
The correct option is B.
20+2N=52
now subtract 20 from each side, to get 2N alone
2N=32
now divide each side by 2
N=16