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O número (-9) é considerado **racional** porque ele pode ser expresso como o quociente de dois números inteiros, com o denominador diferente de zero.
Por exemplo:
[
-9 = \frac{-9}{1} \quad \text{ou} \quad -9 = \frac{-18}{2}.
]
A definição de um número racional é qualquer número que pode ser escrito na forma de uma fração ( \frac{a}{b} ), onde:
-
(a) e (b) são inteiros;
-
(b \neq 0).
Como (-9) atende a esses critérios, ele é um número racional.
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Is -9 an rational number?
Yes. All positive and negative integers are rational numbers.
Is negative 9 and one half a rational number?
Yes it is. It can be written as a fraction.
A negative integer and a rational number?
Placing a question mark at the end of a phrase does not make it a sensible question. Try to use a whole sentence to describe what it is that you want answered. There are many arithmetical operations that can combine a negative integer and a rational number.
Is negative 13.91 a rational or irrational number?
rational number.
Is 9 a rational number?
Yes, it is. I am in grade 7, so the only number that is not rational that I know of is pi. 3.14159265358979323846… So any number negative or positive.
