0.4÷0.515=0.8 rounded to the nearest tenth.
        
                    
             
        
        
        
Switch the y and x then solve for y, so I believe b.
        
             
        
        
        
C, D, E, and G are FOUR points.
 
        
             
        
        
        
Answer:
904.78
Step-by-step explanation:
A sphere with a radius of 6 units has a volume of 904.78 units 
 
        
             
        
        
        
1) factor the denominators: 2b/(b-1)2 - 2/ (b-1)2
2) MAKE SURE YOU HAVE A COMMON DENOMINATOR
3) combine the numerators: 2b-2/(b-1)2
4) distribute 2 from numerator: 2(b-1)/(b-1)2
5) simplify; answer is 2/(b-1)