Answer:
thank you so much for free points
and I don't know the answer but really sorry I don't want to ask some questions on this that's why I did this and thank you for free points
Answer:

Step-by-step explanation:
Remember that the center of a circle is written in (h,k) format. So h= - 9 and k = -12. Also, the distance between those two points is 15 units, so r = 15.
So the formula 
Should look like 
Suppose the one's digit is x, the ten's digit is y. the original number is 10y+x, the reversed number is 10x+y
x+y=13
(10x+y)=(10y+x)-9 =>9y-9x=9 =>y-x=1
Add the two equation to solve: 2y=14 =>y=7
x=13-7=6
the original number is 76.
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