Answer:
(4,-7)
Step-by-step explanation:
-w=(5,-3)
-z=(-1,-4)
so -w-z=(5-1,-3-4)
 
        
             
        
        
        
You just subtract it 125 - 1.82 and it gives you 123.88. i dont know how else to explain
        
             
        
        
        
Answer:
You can use equation or use a calculator.
Step-by-step explanation: 
 
        
             
        
        
        
Answer:
32/27
Step-by-step explanation:
Evaluate for x=
8
/9  + 8
/27
8
/9  + 8
/27
=32/27
(Decimal: 1.185185)
 
        
                    
             
        
        
        
Yes it is correct because you would multiply 30 by 7 which equals 210 + the extra 20 dollars / 50 dollars (idk).. she will have more than enough though