Answer:
x=9
Step-by-step explanation:
The expression is for the interior angle of the hexagon; one interior angle is equal to .
Since an interior angle of a hexagon measures 120°, we have the equality
.
Now it is just a matter of solving for  
11x=120-21
11x=99
x=99/11
x=9
 
        
             
        
        
        
Sin(Angle) = Opposite Leg /  Hypotenuse
Sin (Angle B) = 2 / 3
Angle B = Arcsin(2/3)
Angle B = 41.81 degrees.
        
             
        
        
        
Answer:
Missing Number) 55
Property being used) Distributive 
Step-by-step explanation:
To find the missing number, just plug in reasonable numbers from the other equation. It is distributive because the 55 is being distributed into everything that is inside the parentheses. If you need more help, comment and I'll be more than glad to assist you! :P 
 
        
             
        
        
        
Answer:
one solution: (-1,1)
Step-by-step explanation:
we have
 ----> equation A
 ----> equation B
Solve the system by substitution
Substitute equation A in equation B

solve for x




<em>Find the value of y</em>
 ----> 
The solution is the point (-1,1)
therefore
one solution: (-1,1)