To represent the repeating decimal for \( 0.611 \), we need to identify which option correctly uses bar notation.
Since "611" does not appear to be a conventional repeating decimal, it's likely that we are looking for the repeating portion of "54" in the decimal representation.
Here's a breakdown of the options:
- a. 0.5454¯¯¯¯¯: This shows that "54" is the repeating part, which is correct.
- b. 0.54¯¯¯¯¯: This also indicates that "4" is the repeating part, which is incorrect.
- c. 0.545¯¯¯¯¯¯¯¯: This indicates that "5" is the repeating part, which is incorrect.
- d. 0.54¯¯¯: This shows that "4" is the repeating part, which is incorrect.
Based on this analysis, the correct option is:
a. 0.5454¯¯¯¯¯