Answer:

Step-by-step explanation:
we know that
The volume of the composite figure is equal to the volume of a semi-sphere plus the volume of the cone
so

we have


substitute



 
        
                    
             
        
        
        
Answer:
a' (-6,7) b' (-5,3) c'(-2,4)
Step-by-step explanation:
 
        
             
        
        
        
When mutiplying two negatives you will get a positive so answer A
        
                    
             
        
        
        
Answer:
-15, no roots
Step-by-step explanation:
b^2-4ac to find the discriminant
1^2-4*2*2=
1-16=
-15
-15<0 
so there are no roots
 
        
             
        
        
        
Answer:
17.5
Step-by-step explanation:
{ 1  = 5/4 }
 = 5/4 }
1  * 42/3 = 5/4 * 42/3
 * 42/3 = 5/4 * 42/3
= 210/12
= 17.5