Step-by-step explanation:
6 2/7is rational
-19is rational but next I dont know
 
        
             
        
        
        
-3/4 because it's negative and also you can work it out by using rise/run
        
                    
             
        
        
        
Answer:
is this actually a question
Step-by-step explanation:
 
        
                    
             
        
        
        
you need to find to find the value of x and y. 
2x>(-15-5y)
x>(-15-5y)/2 
now put this in to other equation and solve for y and then put the y value in and find x. 
 
        
             
        
        
        
Answer:
0.5 and 2?  
4
 mph  
1.5 and 2.5?  
5
 mph
Base on these results, the runner ran at a  rate between 0.5 and 2 hours than between 1.5 and 2.5 hours.
slower
Step-by-step explanation: