B: -8
8 times 1 = 8, and since there is a negative in front of the 1 when you are multiplying, it should be -8/ 
        
                    
             
        
        
        
Answer:
The required solution is (5.75,-0.5). It can be written as  .
.
Step-by-step explanation:
The given equations are
 .... (1)
                       .... (1)
 .... (2)
            .... (2)
Multiply the equation (2) by 2.
 .... (3)
                     .... (3)
Subtract equation (1) from equation (3).




Put this value in equation (1).




Therefore the required solution is (5.75,-0.5). It can be written as  .
.
 
        
             
        
        
        
2+3+8
3+8+2
3+2+8
8+2+3
8+3+2
there are multiple ways to get the same sum with the same three numbers  i hope this helps 
        
             
        
        
        
Answer:

Step-by-step explanation:
Use the inverse cosine function.


