Answer:
the answer would be x=3,1
 
        
                    
             
        
        
        
No, as if you reduce 4/16 it is 1/4, not 3/5, therefore they are not equivalent.
        
             
        
        
        
Answer:

Step-by-step explanation:
The formula of a volume of a sphere:

R - radius
We have R = 3 ?. Substitute

If the radius is 30, then the volume is:

If 30 is the length of diameter, then the radius R = 30 : 2 = 15.
Therefore the volume:

 
        
             
        
        
        
Start at -4 and go over to the right 6. - is left and +is right. the answer is 2.