The expressions in which the numbers, or variables, or both, are connected by operational signs (+, - etc.) are called algebraic expressions. For example 5, 4x, a+b, x−y.
 
        
                    
             
        
        
        
Answer:
Z score with a confidence level of 95% is 1.96 
Step-by-step explanation:
The computation of the z score with the confidence level of 95% is shown below:
While determining the margin of error for the normally distributed population from the sample, the z score of the confidence level of 95% is 1.96
The same is to be considered
Therefore the third option is correct
 
        
                    
             
        
        
        
Answer:
252 Cheese Bugers were sold on Thursday
Step-by-step explanation:
378 divided by 3=126
126+126= number of hamburgers
126= number of chese bugers
126+126=252
 
        
             
        
        
        
Answer:
The answer to your question is (x + 3)
Step-by-step explanation:
                     
Factor the expression
                    
Simplify
Cancel 5 because is in both numerator and denominator                   
Cancel (x + 1) because is in both numerator and denominator                   
Cancel (x - 1) because is in both numerator and denominator                   
Cancel x² because is in both numerator and denominator               
    
After simplifying, the result is  (x + 3)