Answer:
The error is the exponent in the answer should be 11.
Step-by-step explanation:
When you move the decimal place one spot as they do in the final step to move it from a base 10 to a base 1, we have to add a exponent on. Therefore, it should go from 10 to 11. 
 
        
             
        
        
        
Answer:
1/9
Step-by-step explanation:
1/9 is a fraction, so it is rational.
 
        
                    
             
        
        
        
Answer:
pls stop deleting my answers brainly thx. also its b! ^-^
Step-by-step explanation: