Which of the following are the factors of 4b2 − 16?
       
      
                
     
    
    
    
    
    2 answers:
            
              
              
                
                
4b^2 - 16 =
4(b^2 - 4) =
4(b + 2)(b - 2)
                                
             
                    
              
              
                
                
Answer:

Step-by-step explanation:
We have been given an expression and we are asked to find the factors of our given expression.

First of all we will factor out 4 from our given expression.

We can see that  is difference of squares, so we can factor it using difference of squares formula:
 is difference of squares, so we can factor it using difference of squares formula:  .
.


Therefore, the factored form of our given expression is  .
.
 
                                
             
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Answer:
5
Step-by-step explanation:
3x5x7x9=945
9 is in the hundreds place
4 is in the tens 
which means 5 must be in the ones
 
        
                    
             
        
        
        
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23 represents the wait time at the time the store opens.
        
             
        
        
        
Set up an algebraic equation: b=cost of ball
1.10=1+b+b
1.10=1+2b
subtract 1 from both sides
.10=2b
divide by 2 on both sides
ball=5 cents