Answer:
 C
Step-by-step explanation:
There are 100%. When divided by 5 you get twenty percent. 9 times 5 equals 45.
 
        
             
        
        
        
You can use trigonometry and the tangent to get:
tan(11°)=150/x
so x=772 ft
 
        
        
        
18sqrt(15)
This has to be at least 20 characters long so yeaaaa
        
             
        
        
        
Answer:
x=8a
Step-by-step explanation:
(3/a) x - 4 = 20 
add 4 to both sides
(3/a) x = 24
Divide by 3/a
x = 24 / (3/a)
Use KCF (keep change flip)
x = (24/1) x (a/3)
x = 24a / 3
simplify
x = 8a