2007-09-26 10:13:48 · 7 answers · asked by Gavin J 2 in Science & Mathematics ➔ Mathematics
Rational numbers = (...-3,-2,-1,0,1,2,3...) AND all the fractions and decimal places in between.
Intergers = (...-3,-2,-1,0,1,2,3...) WITHOUT the fractions and decimal places in between.
Irrational numbers are numbers that are NOT on the number line like the square root of -1, since you can't multiple one number by itself and get a negative number (-1X-1=1 and 1X1=1 this is true for all other positive and negative numbers).
2007-09-26 10:19:53 · answer #1 · answered by Dan S 7 · 0⤊ 0⤋
First off, let me give you the definition of a rational number:
Rational number: A real number that can be expressed as the fraction of integers.
This means that a rational number is a real number (never imaginary) that can be expressed as a fraction with an integer on top and on bottom.
The reason why an integer is also a rational number is because it can be expressed as the fraction of integers.
For example, the integer 4:
4 = 4/1
Also, -2:
-2 = -2/1
To prove this, take x, where x is an integer:
x = x/1
That would be the reason.
There you go. I'm glad I could help. :)
2007-09-26 17:43:23 · answer #2 · answered by iamanicecaringfriend 3 · 0⤊ 0⤋
because an interger is just a fancy word for a whole number and whole numbers are rational
2007-09-26 17:16:57 · answer #3 · answered by Anonymous · 1⤊ 0⤋
a rational is anything that can be rewritten in fraction form. an iteger therfore is a rational number b/c u can rewrite an integer in fraction form
2007-09-26 17:17:18 · answer #4 · answered by Michelle 2 · 0⤊ 1⤋
rational numbers cover a lot of numbers, and integers is in that category. integers are a type of rational number.
2007-09-26 17:17:30 · answer #5 · answered by Anonymous · 0⤊ 1⤋
it can be expressed as a ratio or a fraction, eg 2 = 2/1
2007-09-26 17:16:23 · answer #6 · answered by h b 4 · 0⤊ 0⤋
bcoz they are the same type of number
2007-09-26 17:16:48 · answer #7 · answered by dk lover 3 · 0⤊ 1⤋