Question

why 49−−√ is a rational number.

Answer 1

Hmm, could you double-check that you've written out the numbers properly? :)

Answer 2

4/9

Answer 3

I'm not really sure what this bit means: \[49--\sqrt{}\]

Answer 4

@BasketWeave I meant 4 over 9

Answer 5

Ah ok, so just to check, the question is "Why is 4/9 a rational number?", right?

Answer 6

yes
@BasketWeave

Answer 7

Or perhaps you meant this? \[\sqrt{\frac{ 4 }{ 9 }}\]

Answer 8

yes

Answer 9

(4/9)^0.5=2/3 which is a rational number