# 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.

Relevance

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.

• 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.

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

• Anonymous