A ton is 2,000 pounds so multiply 2,000 x 18
2,000 x 18 =  36,000 pounds, now add the 42 pounds to the 36,000
36,000 + 42 = 36,042 pounds. Now divide 36,042 by 3
36,042 ÷ 3 = 12,014 
Your answer is 12,014 pounds
If you need your answer in tons it's 6.007 tons
Calculations for pounds to tons
12,014 ÷ 2,000 = 6.007
Hope this helps. :)
 
        
                    
             
        
        
        
40 km - meters is 40 * 1000 whch is 40000 meters per hour
        
                    
             
        
        
        
The line from the center of the circle to the outside is called the radius
        
                    
             
        
        
        
I think that is D cus you take 10 off
        
             
        
        
        
The answer is going to be 15xyz+12