Length of the diameter =   sqrt ( (-12- (-8)^2) +(2-0)^2) )
  = sqrt  (16 + 4) = sqrt20 
so radius = sqrt 20 / 2 = sqrt5
so r^2 = 5
Center of the circle = coordinates of the midpoint of the diameter =
-8-12/2 , 2-0 / 2  =    (-10, 1)
(x - a)^2 + (y - b)^2 = r^2  is general form of a circle so here the circle is:_
(x + 10)^2 + (y - 1)^2 = 5  Answer
Its B
        
             
        
        
        
Answer:
Step-by-step explanation:
Y=cos(x+r/2)
 
        
                    
             
        
        
        
Not possible, you know you have to have at least 5 nickels so substract those first, now your at 4.50.  you cant get to 54 coins after that