It is 3i. 
The square root of -9 is the square root of -1 times the square root of 9. 
So: the square root of 9 is 3, and the square root of -1 is called i (this doesn't actually exist, it's just imaginary). 
Then, the square root of -9 is 3i.
        
                    
             
        
        
        
The answer is 4000 because the value of 4 is 40000 so times that by 1/10 gives you 4000
        
                    
             
        
        
        
Answer:
y-6=-3/4(x+4)
Step-by-step explanation:
y-y1=m(x-x1)
m=-3/4
y-6=-3/4(x-(-4))
y-6=-3/4(x+4)
 
        
             
        
        
        
Answer:
41
Step-by-step explanation:
putting x into the eqn
 
        
                    
             
        
        
        
The longest two sides will be 4 each and the shortest two sides will be 2 each