Answer:
They will make 13.80 dollars
Step-by-step explanation:
so they made 1.80 more
 
        
             
        
        
        
 ( A u B) would be the combination of both sets.
 Since both sets have all distinct numbers, just add the 2 sets together.
4 + 7 = 11
There are 11 elements.
 
        
             
        
        
        
okay i have question is this more than oonequestion Step-by-step explanation:
also confusing hope you pass cause would have failed   
 
        
                    
             
        
        
        
Answer:
a²/9  
Step-by-step explanation:
(27a⁻³) (-⅔) = 27^(-⅔) × (a⁻³)^(-⅔)
                   = (3³)^(-⅔) × a²
                   = 3⁻²a²
                   = a²/9
 
        
                    
             
        
        
        
Factor:
2sin^2x-sinx = 0
sinx(2sinx - 1) = 0
Therefore the solutions are when:
sin x = 0
And
sinx = 1/2
So sinx = 0
is true when x = 0 and pi  and all the angles coterminal with these points.  Thus, the answer is x = pi*n, (where n is some integer)
sinx = 1/2
is true when x = pi/6 and 5pi/6 and the angles coterminal with these points.
Thus, the answer is x = pi/6 + 2pi*n (where n is some integer)
and x = 5pi/6 + 2pi*n (where n is some integer)