4.
This is because 4 goes into 16 4 times, hence 4 x 4 being 16.
Therefore, the answer would be four.
Hope this helps!
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
System 1 has no solution, and System 2 has infinitely many solutions. Wait, YOUR IN HIGH SCHOOL?! IM IN 8TH GRADE AND IM DOING THIS??!! well, idk how to solve this, but these are the answers.
 
        
             
        
        
        
Sides are always equal. Pretty sure
        
                    
             
        
        
        
Answer: 40
Step-by-step explanation:
138/x = 207/60
8280 = 207x
divide by 207
40 = x