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avatar+569 

ive been trying to do this but i keep getting it wrong

 Feb 22, 2018
 #1
avatar+99586 
+3

3.

 

a)   

 In the form  ( x - h)^2  + (y - k)^2  = r^2    .... we can write this as

(x - 0)^2 + ( x -  (-5) )^2   = 9

 

The center  is  ( h , k)  =  ( 0 , -5)    ....so Jenna is incorrect

 

b)   9  =  r^2  ...so   the radius is the square root of this     = 3 units

So....the diameter is twice this  =  6 units

Raul is incorrect, as well  !!!

 

 

cool cool cool

 Feb 22, 2018

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