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Q: How do you write 0.2 in the form ab using integers to show what it is a rational number?

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2.4 is a rational number because it can be expressed as an improper fraction in the form of 12/5

I think you mean rational number. A rational number is any number that you can write as a fraction (or ratio) of two integers (+/- 1,2,3,... etc)

A rational number is one that can be written as a ratio - or fraction - between two integers. All integers can be written in the form (integer) / 1, and are therefore rational.

A rational number is a number which can be expressed as the quotient of two integers, a quotient being the solution to a division sum. Therefore, 1/2, or one half, is a rational number, equal to 0.5. However, 1/3, or one third, is an irrational number, because if you had to write the number out as a decimal, the number would continue to recur. Therefore, all integers are rational numbers, but not all rational numbers are integers. EDIT: 1/3 is a rational number, whoever said it wasn't is a moron.

13 is an integer. All integers are rational.

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5/10

2.4 expressed as an improper fraction is 12/5 thus proving that it is a rational number

2.4 is a rational number because it can be expressed as an improper fraction in the form of 12/5

2.4 is a rational number because it can be expressed as an improper fraction in the form of 12/5

All integers are rational numbers so the answer is 721.

NO it is not irrational, that is to say it IS rational. If you can write a number as ratio of integers, it is rational. -11.7 can certainly be written as a ratio of integers.

15000 (all integers are rational numbers).

I think you mean rational number. A rational number is any number that you can write as a fraction (or ratio) of two integers (+/- 1,2,3,... etc)

A rational number is one that can be written as a ratio - or fraction - between two integers. All integers can be written in the form (integer) / 1, and are therefore rational.

A rational number is a number which can be expressed as the quotient of two integers, a quotient being the solution to a division sum. Therefore, 1/2, or one half, is a rational number, equal to 0.5. However, 1/3, or one third, is an irrational number, because if you had to write the number out as a decimal, the number would continue to recur. Therefore, all integers are rational numbers, but not all rational numbers are integers. EDIT: 1/3 is a rational number, whoever said it wasn't is a moron.

13 is an integer. All integers are rational.

Integers are whole numbers. Rational numbers can be fractions / decimals. But it is NEVER a whole number E.G. of rational numbers : 3/4 or 1.5