The answer is C. You can make a rectangle by putting the diagonals through the center anywhere, but if you want a square, you have to put the two diagonals perpendicular to each other and join their ends. See the diagram. 
 
        
             
        
        
        
Answer:
x = 5/32 = 0.156
Step-by-step explanation:
 
        
                    
             
        
        
        
The answer is D, because the others can be solved. A when factored is equal to -3, when B is factored it is equal to 3,-1, when C is factored it is 1,-4. D can be solved but you will only get irrational numbers which can't be used. 
 
        
                    
             
        
        
        
Answer: 42.6% or you can round it to 43%
Step-by-step explanation: