2.1 is already in a decimal form. 
Hope I helped! 
 
        
             
        
        
        
Answer:
D is the correct answer
Step-by-step explanation:
first you subtract the 3 from the left side and add it to the right side. then you divide both side by negative 3 and flip the less than sign to a greater than sign
 
        
             
        
        
        
Answer: 4/45
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
4 hours and 45 minutes.
Step-by-step explanation:
Since Christchurch is 2 hours ahead of Sydney, you subtract 2 from 12:45 and get 10:45 so then, you determine the difference between 10:45 and 6:00 AM and it results in 4.75 hours or 4 hours and 45 minutes
 
        
             
        
        
        
Answer:
6
Step-by-step explanation:
you can connect opposite vertices and opposite sides