Answer:
1.)    
2.)
3.)
4.)
5.)
6.) 
Step-by-step explanation:
I did 6 problems for you. You can now do the other 4 problems and see how I did it. You need to have the same denominator and the add the fractions together.
 
        
             
        
        
        
Answer:
D. 7.29.
Step-by-step explanation:
For a Normal Distribution:
Q1  = mean - (0.675) * standard deviation
= 8.5 - 0.675*1.8
= 7.285.
 
        
             
        
        
        
3 + 20x, where x= the number of hours bowled. A verbal diagram is where you say amount to pay per hour * number of hours + price of shoe rental = total cost. 
        
             
        
        
        
Answer:
180 - 90 = 90
half of 90 = 45
40 and 50??
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
y=9/4 = 2.25
Step-by-step explanation: