Answer: It means that the numbers the bar is over repeats. Answer is C
Step-by-step explanation:
For example:
Example 1: [tex]0.123 \overline {4}[/tex] → The bar is only over the number 4 so only the number 4 repeats. [tex]0.123 \overline {4} = 0.123444444444444444444444...[/tex] with the number 4 repeating forever.
Example 2: [tex]0.12 \overline {34}[/tex] → This time the bar is over the 3 and the 4, so 34 and 4 repeat. [tex]0.12 \overline {34} = 0.12343434343434...[/tex]
Example 3: [tex]0.1 \overline {234}[/tex] = 0.1234234234234234234...
Example 4: [tex]0. \overline {1234}[/tex] = 0.123412341234123412341234...\
To solve your problem, it will be easiest to use a calculator and test each answer.
Choice A: [tex]\frac{4}{5} = .8 \neq . \overline{45}[/tex]
Choice B: [tex]\frac{5}{9} = 0.55555556 \neq 0. \overline{45}[/tex]
Choice C: [tex]\frac{5}{11} = 0.454545454545... = 0. \overline {45}[/tex]
Choice D: [tex]\frac{4}{9} = .44444444444... = 0. \overline {4} \neq 0. \overline {45}[/tex]
The Correct Answer is Choice C
