Is -5 a irrational number?

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Is -5 a irrational number?

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Answer 1 · 2016-08-11T00:05:49

No, $-5$ is an integer.

Explanation:

There are various number types (natural, whole, integer, rational, real and irrational).

Natural numbers are "counting numbers" like $1, 2, 3, 4$ .

Whole/counting are like natural numbers, except that they start from $0$ .

Integers are all the whole numbers - positive, negative numbers and 0, but not fractions or decimals.

(https://socratic.org/prealgebra/negative-numbers-and-absolute-value/negative-numbers-1),

Rational numbers can be written as $a/b, b !=0$
$-5 " can be written as " (-10)/2, "so it is rational"$
Rational numbers include all the integers, all the vulgar fractions, all the terminating decimals (ones that end, like $0.85$ , and all the recurring decimals, unlike $pi$ ).

Irrational numbers are infinite decimals which do not recur like $pi$ , $sqrt2$ or $sqrt20$

Non-real/Imaginary numbers do not exist on the numberline,
Numbers like $sqrt(-50), sqrt(-16), 4i$ .

$-5$ in an integer and is not irrational.

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Is -5 a irrational number?

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