Answer:
a*2+b*2+c*2+d
Step-by-step explanation:
If i's meant to be Pythagorean theorem, a*a+b*b=c*c
 
        
             
        
        
        
Answer:
unknown, because the cost of the sandwich, a drink and a bag of chips where not listed in the question
 
        
             
        
        
        
Draw 4 even lines in the rectangle
 
        
             
        
        
        
Answer:

Step-by-step explanation:
<em>Nothing can be done with the equation because there is no quotient.  </em>
If there was, would be able to solve for x.