Answer:
D. quadrant III
Step-by-step explanation:
 
        
             
        
        
        
⓵ 
-4ỿ = 8
Simplify the left side in order to isolate the ỿ!
-4ỿ = 8
+4 +4
Ỿ = 12
⓶ 
× + 3y - 3z = -26
Simplify the left side in order to isolate the ×, ỿ and z!
× + 3y - 3z = -26
 ÷3 ÷3
× + ỿ - 3z = -8,66 periodic
 ÷-3 ÷-3
× + ỿ + z = 2,88 periodic
⓷ 
2× - 5ỿ + z = 19
Simplify the left side in order to isolate the ×, ỿ and z!
2× - 5ỿ + z = 19
÷2 ÷2
× - 5ỿ + z = 9,5
 ÷-5 ÷-5
× + ỿ + z = -1,9
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Emmm
 
        
                    
             
        
        
        
Answer:Yes, it is
Step-by-step explanation:
2^2+4(2)-12=0
4+8-12=0
12-12=0
0=0