Kayla
Lv 5
Kayla asked in Education & ReferenceHomework Help · 1 decade ago

Can you tell me if these are right?

I'd had to say if these numbers were rational or irrational number...can you tell me if I did it right?

the square root of -19 - irrational

0.3 repeating - rational

7.43 - rational

-12 - rational

square root of 32 - rational

101 - rational

and if I did, can you tell me what I did wrong. Thank you.

5 Answers

Relevance
  • 1 decade ago
    Favorite Answer

    All of it is right except the square root of 32, the square root of -19 is irrational because it can't be expressed as a fraction and isn't a terminating decimal; 0.3 repeating can become 1/3 so it's rational; 7.43 is rational because it terminates; -12 is rational because it terminates; the square root of 32 is irrational because it can't be expressed as a fraction and isn't a terminating decimal; 101 is rational because it terminates.

  • 1 decade ago

    Only the square root of square numbers are rational.

    -19 is not a square number therefore you are correct this is an irrational number.

    This also applies to the square root of 32. It is irrational.

    0.3 repeating is irrational also.

  • 1 decade ago

    all seem to be right except for the square root of 32 its not rational the square root of 32 is irrational

  • Anonymous
    1 decade ago

    sqrt of 32 is irrational...

    just so you know to be sure, rational is if it is possible to put into a fraction form, so to speak

    irrational can not be put into a fraction form, basically <---basically

  • How do you think about the answers? You can sign in to vote the answer.
  • 1 decade ago

    yeah you did it right... but i think that 0.333 repeating is irrational because it's a never ending decimal... but i could be wrong

Still have questions? Get your answers by asking now.