Answer:
The sample  size is  
Step-by-step explanation:
     The population proportion is  
      The margin of error is  
From the question we are told the confidence level is  90% , hence the level of significance is    
        
=>    
Generally from the normal distribution table the critical value  of   is
 is  
     
Generally the sample size is mathematically represented as  
     ![n = [\frac{Z_{\frac{\alpha }{2} }}{E} ]^2 * \^ p (1 - \^ p )](https://tex.z-dn.net/?f=n%20%3D%20%5B%5Cfrac%7BZ_%7B%5Cfrac%7B%5Calpha%20%7D%7B2%7D%20%7D%7D%7BE%7D%20%5D%5E2%20%2A%20%5C%5E%20p%20%281%20-%20%5C%5E%20p%20%29%20) 
=>  ![n = [\frac{1.645 }{0.1} ]^2 * 0.50  (1 - 0.50 )](https://tex.z-dn.net/?f=n%20%3D%20%5B%5Cfrac%7B1.645%20%7D%7B0.1%7D%20%5D%5E2%20%2A%200.50%20%20%281%20-%200.50%20%29%20) 
=>  
      
 
        
             
        
        
        
Answer:
23.4 if your asking 260 percent times 9 dollars
 
        
             
        
        
        
Answer:
9/12
Step-by-step explanation:
You have to divide 36 by 4 to get 9 and then divide 48 by 4 and you will get 12.
 
        
                    
             
        
        
        
25 is the length of x, using the 30-60-90 special triangle method