Answer:
D
Step-by-step explanation:
Use the distance formula to find all of the sides.
Then add them together
 
        
                    
             
        
        
        
Answer:
B) 0.4 (6 - 2w)
Step-by-step explanation:
You can only add or subtract with the numbers that have the same variable:
You can only add -2.2w and 1.4w
Which is -0.8w
Then add 4.8 and -2.4
Which is 2.4
Now the equation is -0.8w+2.4 or 2.4-0.8w
0.4 times 6 is 2.4
0.4 times 2w is -0.8w
Which is the same
-0.8w+2.4 or 2.4-0.8w
Hope this helps!
 
        
             
        
        
        
Is This Substitution?
Cause if it is, then Y = 3x - 4
                              Y = 4 + x
= (4, 8)