Answer:

Step-by-step explanation:
The general equation of a circle is as follows:

In which the center is
, and r is the radius.
In this problem, we have that:

So

Passing through (2,-4)
We replace into the equation to find the radius.



The equation of the circle is:

He should take out the cupcakes at 7:15! Hope this helps :D
Answer:
1:350 i think
Step-by-step explanation:
i could be wrong
Answer:
9 and 9
Step-by-step explanation:
No, it has more than one. A rectangle is symmetric with respect to its diagonals, and the lines connecting the midpoints of two opposite sides.