Answer:

Step-by-step explanation:
 can be solved by just multiplying the numerators together and the denominators together
 can be solved by just multiplying the numerators together and the denominators together
2 * 3 = 6 and 5 * 4 = 20 so the answer would be 
This simplifies to 
 
        
             
        
        
        
The first answer is C. 
The second answer is A. 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
a=2d+3
b=3d-12
c=a+b so
c=2d+3+3d-12
c=5d-9
 
        
                    
             
        
        
        
Answer:
C
Step-by-step explanation:
perpecndicular means they intersect in right angle which is 90°, no matter how long lines are.