Answer:
I provided a full answer and explaination in the picture attached. Good luck.
 
        
             
        
        
        
The value of x is 5
The length of line AB is 5 inches
The length of BC is 15 inches
        
             
        
        
        
Answer:
( x + 3 )² - 27
Step-by-step explanation:
x² + 6x = 18
→ Minus 18 from both sides to get a quadratic equation
x² + 6x - 18
⇒Completed square from is ( x + a )² + b
⇒The value of 'a' will always be half the 'b' value in the equation 
ax² + bx + c
→( x + 3 )² + b
Expand out the equation to find 'b' 
x² + 6x + 9 
We have do something to get from 9 to - 18 which -27
So the answer is ( x + 3 )² -27
 
        
                    
             
        
        
        
The x-coordinate remains the same as the x-coordinate of point B.
The y-coordinate becomes the additive inverse of the y-coordinate of point B.
Answer: B. (3, -8)
        
                    
             
        
        
        
Answer:
19.80
Step-by-step explanation:
tan 22= 8/x
tan 22 = 8/x
x = 8/tan 22
x = 19.80