Answer:
See below. 
Step-by-step explanation:






 
        
             
        
        
        
Answer:
The statement that cushion A is twice as popular as cushion B cannot be verified
Step-by-step explanation:
From the question we are told that:
Sample size n=38
Type a size A 
Type a size B  
  
Generally the probability of choosing cushion A P(a) is mathematically given by


Generally the equation for A to be twice as popular as B is mathematically given by

Therefore Hypothesis

Generally the equation normal approx of p value is mathematically given by



Therefore from distribution table


Therefore there is no sufficient evidence to disagree with  the Null hypothesis 
Therefore the statement that cushion A is twice as popular as cushion B cannot be verified
 
        
             
        
        
        
3/2 = 9/x,
so 9 times 2 divided by 3 = 6
A: 6
 
        
             
        
        
        
Answer:
   C. (3x)^2 - (2)^2
Step-by-step explanation:
Each of the two terms is a perfect square, so the factorization is that of the difference of squares. Rewriting the expression to ...
   (3x)^2 - (2)^2
highlights the squares being differenced.
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We know the factoring of the difference of squares is ...
   a^2 -b^2 = (a -b)(a +b)
so the above-suggested rewrite is useful for identifying 'a' and 'b'.
 
        
             
        
        
        
Answer:
minimum 380 student tickets must be sold. 
Step-by-step explanation:
c) 500x7=3500
intended  =5400 
5400-3500=1900 
1900/5= 380