Answer:
x=9
Step-by-step explanation:
step one pull out the factors 
  3x - 27  =   3 • (x - 9) 
and step two: Equations which are never true
 2.1      Solve :    3   =  0
This equation has no solution.
A a non-zero constant never equals zero.
so x-9=0 and add both sides to 9 and to equal 9
 
        
             
        
        
        
Answer:
3x³ − x² − x − 4 + (-5/(x−1))
Step-by-step explanation:
Use long division (see attached picture).
 
        
             
        
        
        
Easiest way to work it out is to divide by ten, that gives 10% of your original number. Multiply that by two to get 20% and minus that from the original number to get the discount.
450/10 = 45 which is 10% of 450.
20% of 450= 10% x 2 or 45 x 2
therefor 20% of 450 is 90.
450-90 = the discount the shoppers recieve.
        
             
        
        
        
Answer:
x = 88.2
Step-by-step explanation:
The angle at the top of the triangle = 90° - 10° = 80°
and the left side of the triangle is x ( opposite sides of a rectangle )
Using the tangent ratio in the right triangle
tan80° =  =
 = 
Multiply both sides by x
x × tan80° = 500 ( divide both sides by tan80° )
x =  ≈ 88.2
 ≈ 88.2