Ask some people if they got buses and tell them y
        
             
        
        
        
Answer:

Step-by-step explanation:
there are a total of 20 marbles and the chance that it is blue is 8/20 so multy that by itself and the answer is 4/25
 
        
                    
             
        
        
        
Well.. instead of k he could have put 7. He should know that x and y are cut in half of their original values. 
Hope I helped you!
        
                    
             
        
        
        
the process is coal formation which changes into fossil fuels through burning 
 
        
             
        
        
        
Sounds simple to me but may be misleading, I can't see a trick. 
I think all you do is multiply each by 30.
So answer is 45ft X 37.5ft
Hope it's correct. I'd appreciate if you could let me know. Thks..