Q: Is Negative 1.2 irrational number

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It is a rational number

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

-Pi is irrational, because it does not terminate or repeat. Whenever you multiply an irrational number by a rational number (-1), the result is an irrational number.

No.No.No.No.

The square root of 12 is an irrational number

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It is a rational number

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.

Not necessarily. Irrational numbers can be negative or positive.

no

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

No.

-Pi is irrational, because it does not terminate or repeat. Whenever you multiply an irrational number by a rational number (-1), the result is an irrational number.

No. Irrational and rational numbers can be non-negative.

12 is the ratio of 12 and 1 ... nice and rational.

No.