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No. It is -3 and can be written as a fraction, so it is rational.

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Q: Is negative 18 over 6 an irrational number?
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Related questions

Is the square root of negative 18 rational or irrational?

It is neither because the square root of -18 is an imaginary number but the square root of 18 is irrational


Is 18 a real number Is it raional or irrational?

Integers (whole numbers, without a decimal point, including negative whole numbers) are real numbers; they are rational; therefore they are not irrational.


Is 18 an irrational number?

NO!! Irrational Numbers are those where the decimal digits go to infinity AND there is no regular order in the decimal digits. pi = 3.141592.... is the most well known irrational number. as are the 'Square roots' od prime numbers;-# sqrt(2) = 1.414213.... sqrt(3) = 1.73205... sqrt(5) = 2.23606... However, such as numbers as 3.3333..... is NOT irrational, because the decimals are in regular order. Similarly 2.373737.... or 5 .678678678.... Are NOT irrational because the decimals are in a regular order. NB '....''' at the end of a decimal is the mathematical indication of recurring to infinity.


What is the square root of .18?

The square root of 18 is: ± 4.242641


Is the square root of 18 a rational or irrational number?

The square root of 18 is an irrational number because it cannot be expressed as a fraction.


Is the square root of 18 a irrational number?

Yes


What is 4 18 is it rational or irrational?

It is a rational number


Is 18 an irrational?

No. An irrational number cannot be expressed as a/b where a and b are integers, b not zero. 18 = 18/1 = 36/2 = -36/-2 etc.


Is the square root of 324 irrational?

No. √324 = 18 = 18/1 = a rational number.


Is negative 18 rational or irrational?

-18 is the ratio of -18 and 1 ... nice and rational. Also the ratio of 18 and -1, of 36 and -2, of 180 and -10, etc.


Is 18 rational or irrational?

irrational


What are the two closest integers for the irrational number 19?

18 and 20