Answer: 12 meters
Step-by-step explanation: 108 / 9 = 12
 
        
                    
             
        
        
        
Answer:
40%
Step-by-step explanation:
2/5 can be converted to 40/100 by multiplying the numerator and denominator by 20. 
40/100 is equivalent to 40%. 
 
        
             
        
        
        
To add a negative and a positive I usually just subtract them so ex: -5+4=-1
and to subtract them I add the numbers together so -5-4=-9 so its basically the opposite   
        
             
        
        
        
Step-by-step explanation:

the polygon is 15 sided.
 
        
             
        
        
        
<h3>
Answer: B. Graph is nearly symmetrical</h3>
Explanation:
Given information:
- A number line going from 2 to 11.  
 - 0 dots are above 2.  
 - 0 dots are above 3.  
 - 1 dot is above 4.  
 - 2 dots are above 5.  
 - 4 dots are above 6.  
 - 4 dots are above 7.  
 - 3 dots are above 8.  
 - 2 dots are above 9.  
 - 2 dots are above 10.  
 - 0 dots are above 11.
 
From that we can see the data set is {4,5,5,6,6,6,6,7,7,7,7,8,8,8,9,9,10,10} which produces the dot plot you see in the image attachment below.
It's a bit tricky to see, but the graph is nearly symmetrical. If we were to remove the blue points in the dot plot I provided, then we'll get a perfectly symmetrical distribution. Symmetrical means one half is a mirror copy of the the other half. The center line of a symmetrical distribution is both the mean and median.