https://socratic.org/questions/what-is-the-volume-of-a-sphere-with-a-radius-of-12-units
the answer is on here
 
        
             
        
        
        
Answer:
Common Difference(d) is    
                
Step-by-step explanation:
Given sequence is :
                  
If a sequence has a constant common difference throughout the sequence, then the sequence is called Arithmetic Progression.
Considering a sequence:
        
 
where 'd' is the common difference of the A.P.
Similarly, finding the common difference of the given sequence.
        
                            
                               
                                    
Common Difference(d) is    
                
 
        
                    
             
        
        
        
The main units are inches, centimeters, meters, feet, and yards.
        
                    
             
        
        
        
The answer is:  [A]:  "No solution" .
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Note:  Given:
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  y = 4x + 8 ;
  y = 4x + 2 ;
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Since:  "y = y" ;
4x + 8 = 4x + 2 ; which is not true;
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 4x  +  8  ≠  4x  +  2 ;  since,  "8  ≠ 2" ;
Note:  Suppose:  "4x + 8 = 4x + 2" ; 
 → Subtract "4x" from each side of the equation:
4x + 8 − 4x  = 4x + 2 − 4x ; 
to get: 
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 " 8 = 2 " ;  not true ; since  "8 ≠ 2" ;
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Also, suppose:
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 4x + 8 = 4x + 2 ; 
→ Subtract "2" from BOTH SIDES of the equation;
4x + 8 − 2 = 4x + 2 − 2 ;
to get:
4x + 6 = 4x 
(Note:  "4x + 0 = 4x" ;  but "4x + 6 ≠ 4x") l
But even if we have:
4x + 6 = 4x ; 
→ Subtract "4x" from EACH side of the equation:
4x + 6 − 4x  = 4x − 4x ;
to get:
   6 = 0 ; which is not true;  "6 ≠ 0" . 
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The correct answer is:  [A]:  "No solution" .
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