Answer:
looking at anwser now
Step-by-step explanation:
 
        
             
        
        
        
In order to find the average you have to add up all the data values and then find the sum of the data values.

So on average he ran about 82.5 miles. 
 
        
             
        
        
        
I do not know but i am going to still glith the server if you need help go to google
        
             
        
        
        
Answer:
x=18
QR=29
RS=29
QS=29
Step-by-step explanation: 2X-7=5x-61=x+11 solve for x since all sides are equal