(X+4)(X-4) is the LCD because you just have to look at the denominators and see what factors or values are not already part of your LCD.
        
             
        
        
        
Answer: 13:15
26:30
39:45
52:60
Step-by-step explanation: 
 
        
                    
             
        
        
        
B = 26in, c = 40in
a^2 = 26^2 + 40^2
 = 2276 (square root it)
 a = 2root569 // 47.7in
        
             
        
        
        
Answer:
1 option is correct
Step-by-step explanation:
Angle AOB and DOC is vertically opposite angle
 
        
                    
             
        
        
        
The slope is 1
Difference between the first and second y is 8
Difference between the first and second x is also 8
(8,8) simplifies to 1
Hope this helps!
Please crown;)