Answer:
55
Step-by-step explanation:
 
        
                    
             
        
        
        
The answer is 20-3x=-7 explanation
        
             
        
        
        
Answer:
i believe it is D side angle side
Step-by-step explanation:
 
        
             
        
        
        
Answer:
 B)no 
Step-by-step explanation:
the correct solution is (3,12)
 
        
             
        
        
        
Answer:
The probability is   
Step-by-step explanation:
From the question we are told that 
  The capacity of  an Airliner  is  k =  300 passengers 
  The sample size n =  320 passengers
   The probability the a randomly selected passenger shows up on to the airport 
     
Generally the mean is mathematically represented as 
      
 
   =>  
 
     =>  
 
Generally the standard deviation is  
     
=>  
=> 
Applying Normal approximation of binomial distribution 
Generally the probability that there will not be enough seats to accommodate all passengers is mathematically represented as 
   
Here 
=>
Now applying  continuity correction we have 
     ![P(X  >300 ) =  P(Z >  \frac{[300+0.5] - 307.2}{3.50} )](https://tex.z-dn.net/?f=P%28X%20%20%3E300%20%29%20%3D%20%20P%28Z%20%3E%20%20%5Cfrac%7B%5B300%2B0.5%5D%20-%20307.2%7D%7B3.50%7D%20%29) 
     
=>    ![P(X  >300 ) =  P(Z >  \frac{[300.5] - 307.2}{3.50} )](https://tex.z-dn.net/?f=P%28X%20%20%3E300%20%29%20%3D%20%20P%28Z%20%3E%20%20%5Cfrac%7B%5B300.5%5D%20-%20307.2%7D%7B3.50%7D%20%29)
=>    
From the z-table  
     
So 
     