Answa line of symmetry will connect a vertex and a midpoint of an opposite side
it has 7-fold symmetry.  
Step-by-step explanation:
A line of symmetry is a line that we can use to "fold" a figure in half. In order to do this, we will "fold" the figure from a vertex to the middle of the side opposite the vertex. Since there are 7 vertices, there will be 7 lines of reflection. i looked it up so i hope this helps you can thank  
IreneJoliotCurie this is from her i needed the same one 
 
        
                    
             
        
        
        
Answer:
4
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
Ok, so the slope has to be the same because it’s parallel.
y=2/3x+1
slope=2/3
y=-2
x=-5
y=2/3x+ what
-2=-3 1/3 + what
1 1/3
hence, y=2/3x+4/3
 
        
             
        
        
        
Um... it'll take each pipe 80 mins, bcz if together they take that long, then to find the pipes time separately, you just multiply it by two to show it doing the work the other pipe did as well. Is that what you wanted??
        
             
        
        
        
Answer:
10n -11 =3 + 4n + 6n
10n - 10n -11 =3-3 + 4n + 6n
-11 - 3 = -10n + 4n + 6n
-14= -10n + 10n
-14 = n
Step-by-step explanation:
10n -11 =3 + 4n + 6n
10n - 10n -11 =3-3 + 4n + 6n
-11 - 3 = -10n + 4n + 6n
-14= -10n + 10n
-14 = n