Answer:
the x^2 column would have a "22" between the 4 & 5 
Step-by-step explanation:
x	x^2
0	0
1	1
2	4
3	9
4	16
5	25
6	36
 
        
                    
             
        
        
        
We want to find one-half of the reciprocal of 7/sqrt(98). Let's write down an expression for this:
 
We can rewrite 98 into 


The square root of 49 is 7



This should be your answer. Let me know if you need any clarifications, thanks!
 
        
                    
             
        
        
        
Answer:
3
Step-by-step explanation:
159-12=147-12=... keep going until you get to
15-12=3