Answer:
(4x + y)(3x-5x)
Step-by-step explanation:
 
        
             
        
        
        
Answer:
-2/3 or 1/2
Step-by-step explanation:
both eqn equal to zero
then we know that 
 
        
             
        
        
        
Answer:
d. 11.6
Step-by-step explanation:
The results of the first die and the second one are independent to each other. The expected value of Z is obtained, therefore, by summing the expected values of both X and Y, because Z = X+Y and X and Y are independent. As a result 