When you round; you round down if the number in the selected column is below 5 and you round up if the number is 5 and above.  
Thus; if you apply this to your question: 
784,072 then round up and you get 790,000 
 
        
             
        
        
        
Answer:
The circumference of the circle is <u>C-72.22 </u><u>units</u>
Step by step explanation-
Given-
- Diameter of circle (d) = 23 units 
- π = 3.14
Now, 
<h3>

</h3>


 
        
                    
             
        
        
        
Answer:
19.2 seconds
Step-by-step explanation:
1.2 times 8 which equals 9.6
9.6 times 2
 
        
                    
             
        
        
        
Answer:
x=20
Step-by-step explanation:
The line is a straight line, which is 180 degrees
x+100+3x = 180
Combine like terms
100+4x = 180
Subtract 100 from each side
100+4x-100=180-100
4x=80
Divide by 4
4x/4 = 80/4
x=20