3x - y = 9
y = -2x + 11
3x - (-2x + 11) = 9
3x + 2x - 11 = 9
3x + 2x = 9 + 11
5x = 20
x = 20/5
x = 4
y = -2x + 11
y = -2(4) + 11
y = -8 + 11
y = 3
solution (where the lines intersect) is (4,3)
        
                    
             
        
        
        
Answer:
2.83
Step-by-step explanation:
25 round off is equal to 30 
so we can write 2.825 = 2.83 in form of 2 digits 
83 round off to 80 
2.83 is equal to 2.8
 
        
             
        
        
        
(x + 5)(y + 10)
x(y + 10) + 5(y + 10)
x(y) + x(10) + 5(y) + 5(10)
xy + 10x + 5y + 50
        
             
        
        
        
Answer:
1275510204.08
Step-by-step explanation:
please first take square and then division