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!
 
        
                    
             
        
        
        
Normally, two packs of batteries cost $1.89*2=$3.78.  The discounted price of $3.40 divided by the standard price of $3.78 for two packs is approximately .9, or 90 percent.  Therefore, we have an approximately ten percent discount with the sale.
        
                    
             
        
        
        
Answer:
ans=3
Step-by-step explanation: