Answer:
The answer to your question is  20x + 21y + 14        
Step-by-step explanation:
Data
Expression              1/5 (150x - 80y + 50 - 50x - 25y + 20)
Process
1.- Multiply 1/5 by each term
                                      150/5x - 80/5y + 50/5 - 50/5x - 25/5y + 20/5
2.- Simplify
                                       30x - 16y + 10 - 10x - 5y + 4
3.- Simplify like terms
                                       (30x - 10x) + (-16y - 5y) + (10 + 4)
4.- Result
                                         20x + 21y + 14                                        
 
        
                    
             
        
        
        
Answer:
862.75 meters^3
Step-by-step explanation:
(17)(14.5)(3.5)=862.75
 
        
                    
             
        
        
        
25x² + 1 = 5
25x² + 1 - 5 = 0
25x²  - 4 = 0          By difference of two squares
(5x)² - (2)² = 0 
(5x - 2)(5x + 2) = 0
5x - 2 = 0    or          5x + 2 = 0
5x = 0 + 2                5x = 0 - 2
5x = 2                      5x = -2  
x = 2/5                      x = -2/5 
x = 0.4                      x = -0.4  
 
x = + 0.4  or -0.4