The one for 9 is 15
The one for 7 is 11
The one for 1 is -1
The one for 0 is -3
Answer: a. Radius of circle = 
b. The equation of this circle :
Step-by-step explanation:
Given : Center of the circle = (3,10)
Circle is passing through (12,12).
a. To find the radius we apply distance formula (∵ Radius is the distance from center to any point ion the circle.)
Radius of circle = 
Radius of circle = 
i.e. Radius of circle = 
b. Equation of a circle =
, where (h,k)=Center and r=radius of the circle.
Put the values of (h,k)= (3,10) and r=
, we get
∴ The equation of this circle :
Answer: A. 12.5
<u>Step-by-step explanation:</u>

Answer:
-4
Step-by-step explanation:
-36v+42=186
-36v=144
v=-4