Answer:

Step-by-step explanation:
From the question we are told that:
Sample size 
Mean 
Standard deviation 
Generally 99\% confidence from table  is mathematically given by
  
  
  
Generally the equation for 99\% confidence level (CI)  is mathematically given by
  
  
 
        
             
        
        
        
Answer:
Last one
Step-by-step explanation:
You can simplify the first one or compare both of them if they have the same ratios! Hope this helps <3
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
according to the question ur algebraic expression is
8-w
 
        
                    
             
        
        
        
The cost of my me knife is $5.52
        
             
        
        
        
Π = 3.14
π = 3.141592653589793