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28-09-2015
Mathematics

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is 1.5/7.5 a rational number?

Respuesta :

28-09-2015

Rational numbers are numbers that can be written as a fraction.

1.5/7.5 = 0.2
0.2 can be written as a fraction as 1/5.

So 1.5/7.5 is a rational number.

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28-09-2015

1.5/7.5 is the ratio of 15 to 75. It's also the ratio of 1 to 5. Every number that you can write down completely with digits is rational.

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