-^5sqrt16 not sure
^3sqrt121 not sure
sqrt-81 (i think this one is rational)
sqrrt25 ( I think this is rational)
sqrrt49/100 (rational ?)
Could you help me and thank you so much.
2007-08-12 13:28:29 · 3 answers · asked by vadataborn 2 in Science & Mathematics ➔ Mathematics
I am not sure what the ^ is for in the first two, but if you get a whole number when you take the square root, then it is rational, otherwise it is not. On the third one, if that is the square root of negative 81, then it is not even a real number, let alone rational.
2007-08-12 13:39:09 · answer #1 · answered by Paladin 7 · 0⤊ 0⤋
They are all rational except â-81, which is not real.
5 â16 = 5*4=20
3â121 = 3*11 = 33
â25 = 5
â(49/100) = 7/10.
Hope that helps!
2007-08-12 21:26:39 · answer #2 · answered by steiner1745 7 · 0⤊ 0⤋
go to www.factmonster.com and type in rational and irrational and it will help u but i am not sure it will tell u the answer hope this will help u
2007-08-12 20:46:52 · answer #3 · answered by Anonymous · 0⤊ 0⤋