Answer:
The estimate is  
Step-by-step explanation:
From the question we are told that   
     The sample size is  n =  522
     The sample proportion of students  would like to talk about school is  
   Given that the confidence level is  90 % then the level of significance can be mathematically evaluated as 
                   
                   
                   
Next we obtain the critical value of   from the normal distribution table, the value is
 from the normal distribution table, the value is  
                
Generally the margin of error can be mathematically represented as 
                
=>            
=>             
Generally the estimate the proportion of all teenagers who want more family discussions about school at 90% confidence level is  
                        
substituting values 
                      
 
        
             
        
        
        
Answer: the answer to (g+h)x4 is 
4g+4h
Step-by-step explanation:
(g+h)x4 
multiply the parentheses by 4
and that will give you 4g+4h
sorry if it was wrong 
 
        
             
        
        
        
Answer:
10
Step-by-step explanation:
substitute -8 into x.
f(-8)=-8+18=10
 
        
             
        
        
        
1/4n I think I hope this is correct
        
             
        
        
        
Answer:
Research also confirms that incisions carried out with obsidian produce narrower scars and fewer inflammatory cells. This is because on cellular level, obsidian knife cuts between cells rather than tearing it in case of a steel knife, hence, a sharper cut allows the wound to heal more easily with negligible scarring.