If the train travels 744 miles in 3 hours then to determine the unit rate the train is traveling per hour you have to divide the miles by the hours, in this case (744 miles)/(3 hours). The final result concludes as 248 miles per hour. 
 
        
             
        
        
        
Answer:
3547.90
Step-by-step explanation:
 
        
             
        
        
        
Please fix the equation in the second part. Is it + or -.
        
                    
             
        
        
        
Answer:
Rectangle w=72
Step-by-step explanation:
Rectangle
Solve for 
width
w
=
72
cm
l
Length
cm
P
Perimeter
cm
 
        
             
        
        
        
The mean age of the frequency distribution for the ages of the residents of a town is 43 years.
Step-by-step explanation:
We are given with the following frequency distribution below;