SOLUTION: Which number is irrational? a) sqrt 4/9 b) 9.737737773... c)8.888... d)they are all irrational I picked D, because i'm pretty sure that this is right..but just to make sure

Algebra ->  Algebra  -> Real-numbers -> SOLUTION: Which number is irrational? a) sqrt 4/9 b) 9.737737773... c)8.888... d)they are all irrational I picked D, because i'm pretty sure that this is right..but just to make sure       Log On

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Question 7108: Which number is irrational?
a) sqrt 4/9
b) 9.737737773...
c)8.888...
d)they are all irrational
I picked D, because i'm pretty sure that this is right..but just to make sure i thought that i'd ask for some help.
Thanks!!
Answer by Earlsdon(6103) About Me  (Show Source):
You can put this solution on YOUR website!
Nice try but no cigar!
Remember, a rational number can always be expressed as a ratio of two integers.
a) sqrt%284%2F9%29=+2%2F3, a rational number.
b) 9.737737773... a non-repeating, non-terminating decimal. This is an irrational number.
c)8.888.. can be expressed as 8 8/9, a rational number.
So, choice b) 9.737737773... is the only irrational number in the list.