Answer:
57
Step-by-step explanation:
How I did this was 513 divided by 9 so the equation that I did was 513/9.
 
        
                    
             
        
        
        
You would do 66×3, which is 198
        
             
        
        
        
One solution x = 1, y = 4
        
             
        
        
        
Answer:
D
Step-by-step explanation:

 
        
             
        
        
        
Answer:
34,000
179,400
39,900
Step-by-step explanation:
In the number 33,762, the 3 is in the thousands place, so we look to the number behind it. If it is less than 5, we round down, and if it is more than 5 we round up. 
Since 7 is more than 5, we round up, so our rounded number would be
34,000
Let’s use this logic for the rest of these numbers
179,406
4 is in the hundreds
Previous number in 0 which is less than 5, so it rounds down 
179,400
39,994
9 is in the tens place
Previous number is 4 which is less than 5, so it rounds down
39,990