determine whether these numbers are rational or irrational.
GIVING MEDALS!!
1) 6/5
2) 3/7
3) 3.5
4) 0.38
5) 2(sqrt{?})7
6) -0.4
7) 4(sqrt{?})25
8) 2/9

Question

determine whether these numbers are rational or irrational.
GIVING MEDALS!!
1) 6/5
2) 3/7
3) 3.5
4) 0.38
5) 2(sqrt{?})7
6) -0.4
7) 4(sqrt{?})25
8) 2/9

anonymous · Answer

(sqrt{?}) = square root

dumbcow · Answer

easy...if it can be written as a fraction of 2 integers its Rational
otherwise its Irrational

dumbcow · Answer

all radicals (sqrt) are Irrational unless its a perfect square

examples:
sqrt(16) = 4
sqrt(25) = 5

anonymous · Answer

im dumb i dont know this stuff

dumbcow · Answer

all numbers, fractions, and deciamls that dont go on forever are Rational
everything else is irrational