D. X cubed
E. X to the negative 3
        
             
        
        
        
Answer:
(-3,4)
Step-by-step explanation:
x + 2y = 5 
-3 + (2*4) = 5 
-3 + 8 = 5
5 = 5 
2x + 3y = 6 
(2*-3) + (3*4)=6
-6 + 12 = 6 
6 = 6
 
        
                    
             
        
        
        
Answer:
84 feet
Step-by-step explanation:
If the perimeter is 36 feet, and all the sides are the same length, then all the sides are 9. if we increase the length by 3 feet and decrease the width  by 2 feet then we are left with 12 * 7 = 84
 
        
             
        
        
        
Answer:
Step-by-step explanation:
sin 45 = x/12
x = 12 sin 45
x = 6√(2)
answer is D
 
        
                    
             
        
        
        
10 percent of 11.50 is 1.15. Subtract that from 11.50 and you would get 10.35. The sale price would be $10.35