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.
- 1 decade agoFavorite 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.
- Dean WinchesterLv 51 decade ago
all seem to be right except for the square root of 32 its not rational the square root of 32 is irrational
- Anonymous1 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
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- 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