Yes.
Put the repeating digits over the same number of 9s and simplify.
eg 0.18181818... = 18/99 = 2/11
eg 0.123123... = 123/999 = 41/333
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They are both representations of rational numbers.
all rational fractions are repeating. When you divide, eventually the remainder will repeat and then will the sequence
You can always convert a fraction to a decimal. For some fractions, you'll get terminating decimals. For example, 1/8 = 0.125. For other fractions, you get repeating decimals, such as 1/7 = 0.142857 142857 142857...To convert the fraction to a decimal, just divide the numerator by the denominator, for example on a calculator.
No because integers are whole numbers without decimals or fractions.
Fractions don't repeat, decimals do. 4/9 = 4 divided by 9 = 0.4444 repeating