False. A decimal that is a rational number may repeat, but it might also "terminate," or stop. For example, 0.13333.... with a repeating 3 IS a rational number, but so is 0.23 with no repeating.
Only decimals that neither repeat nor terminate are irrational.
**** Edit:
Just because it CAN be written as a repeating decimal doesn't mean it MUST. The question is whether a rational number ALWAYS repeats itself. Here's one that doesn't: 4.3
Here's another that doesn't: 0.005
If we can write a rational number that doesn't repeat itself, the answer is false.
2007-05-17 08:52:57
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answer #1
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answered by Timothy H 4
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True. This is so, because every rational, by definition, can be written as A/B where A,B belong to the Integers.
Even "terminating" decimals can be written as repeating decimals, without using repeated 0's. For example:
0.23 = 0.229999999999...
0.421 = 0.4209999999...
1 = 0.9999999999...
2007-05-17 08:58:56
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answer #2
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answered by NSurveyor 4
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true.
note that it also can repeat with zero's as in 1.000000000...
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any rational can be written as a fraction of two integers a/b , by carrying out the division you will see that the since ytou are working with integers and that there are only a finite number of integers ( namely those smaller than the divisor b ) , the decimal representation have to repeat.
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2007-05-17 08:53:00
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answer #3
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answered by gjmb1960 7
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True.
When rational numbers are written in decimal form, the digits following the decimal point will eventually begin to repeat.
2007-05-17 08:49:57
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answer #4
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answered by not gh3y 3
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Yes this is true
2007-05-17 08:53:30
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answer #5
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answered by Nicola W 3
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Shuck my balls
2013-10-30 11:57:02
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answer #6
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answered by Leaf 1
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