Answer:
77
Step-by-step explanation:
sum of all number/total numbers
80+90+10+75+98+95+99/7
77
 
        
             
        
        
        
Well, it would end up to 3x=14 which is x=4.33
        
                    
             
        
        
        
Answer:
wdaaaaaaaaaaaaa
Step-by-step explanation:
wdaDf
aaaaaaaaaaaaaaaaaaaaa
 
        
             
        
        
        
Well...  the two rectangles are in the picture below, those are their coordinates
so, you can pretty much see how long one side is, since you can simply count the units on the grid
running a tests on them....  hmmm they'd be similar is the length of the corresponding sides on each figure, give the same ratio