Answer:
Given the equations:
 .....[1]
              .....[1]
 ....[2]
                     ....[2]
Substitute the value of x in [1] we get;'

Use identity: 

Combine like terms;

Subtract 36 from both sides we get;


By zero product property, we get;
y = 0 and 
Substitute these y values in [2] to get x values;
For y = 0 we have;
x = 2(0) +6 = 0+6 = 6
For x = -4.8
x = 2(-4.8)+6 = -9.6 + 6 = -3.6
Therefore, the solution for the given equations are; (6, 0) and (-3.6, -4.8)
 
        
             
        
        
        
You must equal zero, so that way 2x can equal 2x
        
             
        
        
        
Answer:
11 3/5
Step-by-step explanation:
x+2/5=12
First, you subtract 2/5 from both sides, so the equation becomes:
x=11 3/5
Therefore, x equals 11 3/5
 
        
                    
             
        
        
        
Answer:
269
Step-by-step explanation:
By the order of operations, you first do the multiplication, then you can do the addition and subtraction
7+5+264-7
12+264-7
276-7
269
 
        
                    
             
        
        
        
Answer:
47
Step-by-step explanation:
sinice they are similar they have the same angles so 180-118-15=f
so f=47