Answer:
x=5
Step-by-step explanation:


 
 
 
        
                    
             
        
        
        
Answer:  1,569.75
Step-by-step explanation:
6279÷4=1,569.75
:)
 
        
             
        
        
        
We have to find x and x is the hypotenuse. We use this formula:
hyp²=side²+side²
So:
hyp²=side²+side²
hyp²= 12²+9²
hyp²= 225
hyp²= √225
hyp= 15
Therefore, the hypotenuse is 15 and x is 15.
HOPE THIS HELPS! 
HAVE A GR8 EVENING ;-)
 
        
        
        
It is B) -1/2 you btw you don't have to put please help :)
        
             
        
        
        
-12 is an integer because all fractions are rational numbers.