8n+52=12(n+2)
distribute
8n+52 = 12n+24
subtract 8n from each side
52=4n +24
subtract 24 from each side
28 = 4n
divide by 4 on each side
7=n
 
        
             
        
        
        
Answer:
30
Step-by-step explanation:
21 + 9 = 30
 
        
             
        
        
        

50 points decreased by 26% is
 37 points.

50 points decreased by 26% is
 37 points.
 
        
                    
             
        
        
        
It may be because the range isn't actually considered an average, it's shown using a box and whiskers diagram, Mode is the most common number. Mean is all the numbers added up and divided by the amount of values there are in the adding up process. so overall the range is less useful to show variability as it only shows the lowest and highest number in the data, and not the different individual numbers variety amongst the results