Answer:
G, 113.04
Step-by-step explanation:
To find the area of the head of the nail you need to use the*
> A= π*r^2* A equals area, π equals pi(3.14) and then you square your raidius, which is 6 in your case. 
π*r^2
plug in your six as the *r
π*6*^2
solve 6^2=36 and multiply that by your π which is 3.14
3.14*36
=113.04 
Hope that helped!! :)
 
        
                    
             
        
        
        
Answer:
It B. X=12
Step-by-step explanation:
Stay home and safe 
 
        
             
        
        
        
Answer:
Eric's expression is :

and Andrea's is :

In Eric's expression, 20 represents the initial amount of substance with which he has started the experiment.  is the amount of substance left after each time period (in this case, each week).The variable w in this case represents the number of weeks.
 is the amount of substance left after each time period (in this case, each week).The variable w in this case represents the number of weeks.
Andrea's expression can be written as :

The one outside of parentheses represents the initial amount of the substance. The one inside of parentheses represents 100% of the original amount of the substance. 0.5 represents the 50% of the substance that is lost each time period. The variable w in this case represents the number of weeks.
 
        
                    
             
        
        
        
Answer:

Step-by-step explanation:

 
        
             
        
        
        
<span>they built 2.22 km per day I think</span>