SOLUTION: Is -0.685 a rational or irrational number? I'm pretty sure that it's a rational number. Thanks!

Algebra ->  Polynomials-and-rational-expressions -> SOLUTION: Is -0.685 a rational or irrational number? I'm pretty sure that it's a rational number. Thanks!      Log On


   

Question 5594: Is -0.685 a rational or irrational number?
I'm pretty sure that it's a rational number.
Thanks!
Answer by prince_abubu(198) About Me  (Show Source):
You can put this solution on YOUR website!
It's a rational number because you can express it as a/b where both a and b are integers. It just happens that your a = -685 and your b is 1000. How did we get that, you say? It's something that you've learned earlier in middle school or later elementary school - how to convert from fraction to decimal and the other way around.