what is a rational number and an irrational number?
2006-09-21 12:43:14 · 5 answers · asked by Ashley 2 in Education & Reference ➔ Homework Help
rational number can be divided by another number (4, 16)
irrational's only factors are 1 and itself (2,3,5)
2006-09-21 12:47:07 · answer #1 · answered by emp04 5 · 0⤊ 0⤋
a rational nbr can be expressed as a fraction. irrational cannot. e.g. 1/3, 3/5 etc are rational. pi is not. any infinitely repeating decimal can be shown to be rational and any fraction can be expressed as an infinitely repeating decimal. an irrational number will always have an infinite non-repeating decimal portion- such a sq root of 2 or pi.
2006-09-21 19:52:08 · answer #2 · answered by steven o 2 · 0⤊ 0⤋
a rational number is any number that can be written as a fraction, so 5, 9.2, 4.9385893485348735, -98.54, or 9.33333...
An irrational number is a number that can not be written as a fraction, such as pi (3.14159...) the square root of 11, etc...
2006-09-21 19:54:33 · answer #3 · answered by Anonymous · 0⤊ 0⤋
heres sources with math definitions
the second link is the best for ur ?
2006-09-21 19:51:04 · answer #4 · answered by blank 4 · 0⤊ 0⤋
2x2 = 4 is rat
2006-09-21 19:51:02 · answer #5 · answered by I think... 6 · 0⤊ 1⤋