Mathematics: This sounds dum but I don t know what the line on top is for. (step-by-step explanation would be appreciated)

Step-by-step explanation:3 hope it helps u...

This sounds dum but I don t know what the line

Ответ:

mrashrafkotkaat

04.02.2022

Mathematics

It means that the numbers the bar is over repeats. Answer is C

Step-by-step explanation:

For example:

Example 1: $0.123 \overline {4}$ → The bar is only over the number 4 so only the number 4 repeats. $0.123 \overline {4} = 0.123444444444444444444444...$ with the number 4 repeating forever.

Example 2: $0.12 \overline {34}$ → This time the bar is over the 3 and the 4, so 34 and 4 repeat. $0.12 \overline {34} = 0.12343434343434...$

Example 3: $0.1 \overline {234}$ = 0.1234234234234234234...

Example 4: $0. \overline {1234}$ = 0.123412341234123412341234...\

To solve your problem, it will be easiest to use a calculator and test each answer.

Choice A: $\frac{4}{5} = .8 \neq . \overline{45}$

Choice B: $\frac{5}{9} = 0.55555556 \neq 0. \overline{45}$

Choice C: $\frac{5}{11} = 0.454545454545... = 0. \overline {45}$

Choice D: $\frac{4}{9} = .44444444444... = 0. \overline {4} \neq 0. \overline {45}$

The Correct Answer is Choice C

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This sounds dum but I don't know what the line on top is for. (step-by-step explanation would be appreciated)

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