Without that value, we can't solve your problem, unless you are looking for an algebraic equation.
 
        
             
        
        
        
Answer:
height is =area  dived by base
Step-by-step explanation:
156 divide 13 is 12
so the answer of height is 12.......hope u understand dear
 
        
                    
             
        
        
        
You apply the sum of interior angles formula ie. (n-2)180. n=number of sides
since a pentagon has 5 sides it will be (5-2)180=540.
now add everything. x-5+x-6+2x-7+x+2x-2=540.
Solve for x: 7x-20=540
7x=540+20
7x=560
x=560/7
x=80
        
             
        
        
        
Answer:
4y
Step-by-step explanation:
y - -3y
Subtracting a negative is like adding
y+3y
Combine like terms
4y