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Q: Is negative 1.5 an irrational number?

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It is a negative number. It is also rational because it can be written as -15 / 1

If you have any positive irrational number, then its negative is also irrational.

A negative irrational number can be thought of as an irrational number multiplied by -1, or an irrational number with a minus sign in front of it.

If it says "negative irrational", then obviously it is irrational.

The negative of a rational number is also rational.

Not necessarily. Irrational numbers can be negative or positive.

no

No integer is irrational.

No, they can be rational or irrational. The sign of a number has nothing to do with it.

- 2/15 is the ratio of -2 and 15, or of 2 and -15 ... nice and rational.

No.

Unless the integer is fractional it is not an irrational number.

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