Step-by-step explanation:
Unfortunately you didn’t provide the expressions to chose from 
however, we can write : 
(5g+3h+4) •2 = 2*5g + 2*3h + 2*4  (using distributive property)
                      = 10g + 6h + 8.
 
        
             
        
        
        
This line y = 4/5 x - 3 has slope = 4/5
Perpendicular lines, slope is opposite and reciprocal so slope of a line that is perpendicular to the line y = 4/5 x - 3 is -5/4
Answer
- 5/4
 
        
                    
             
        
        
        
I think it would have to be 1.46. 
Explanation: if you subtract 3.56 from 2.1 you’ll get 1.46
        
             
        
        
        
You can find the perimeter of a pentagon by its vertices or by using an unit circle
        
             
        
        
        
Answer:
P = 2(n - 6) + 2(n^2 - 8)
Step-by-step explanation:
Remembering that Area = Length times Width, we factor the given function 
A = n^3 - 6n^2 - 8n + 48 in the expectation that the resulting factors represent the length and width respectively:
A = n^3 - 6n^2 - 8n + 48 factors as follows:
A = n^2(n - 6) - 8(n - 6), or A = (n - 6)(n^2 - 8)
We can label '(n - 6)' "width" and '(n^2 - 8' 
length.
Then the perimeter, P, of the rectangle is P = 2(length) + 2(width). which works out here to:
P = 2(n - 6) + 2(n^2 - 8)