oh and what does | | around a # mean???
2007-09-27 17:25:56 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
thanx, i gets it
2007-09-27 17:34:28 · update #1
| x | is the magnitude (size) of x
| 12 / 6 | = 2 = 12 / 6
| 12 / - 6 | = | - 2 | = 2 ≠ 12 / (- 6)
2007-09-29 08:00:37 · answer #1 · answered by Como 7 · 1⤊ 0⤋
The parallel lines mean 'absolute value,' or distance from 0 to that number on a number line.
Oh to answer your question, absolute value is always positive. So like someone said, it could be negative within the bars but it will always be a positive number. For example, if you have |-3|, that means that you're 3 points away from 0 on a number line. You can't be negative 3 points away from 0. So either way, left or right, the absolute value, or distance, will always be positive.
2007-09-28 00:28:56 · answer #2 · answered by Θ Chez Θ 3 · 0⤊ 0⤋
The lines around the number means absolute value. In other words the positive of the number.
|-5|=5 |3|=3
-6/3 = -2
|-6/3| = 2
2007-09-28 13:45:13 · answer #3 · answered by Piranhatron 3000 3 · 0⤊ 1⤋
| | around the expression means "the absolute value of" ... the absolute value of an expression/number is the distance it is from 0...it is always positive... for example, |-3| = 3... so for |a/b|=a/b is not always true, provide a counter example... you could use a = -1 and b = 4, then |a/b|=|-1/4|=1/4 which is not equal to a/b = -1/4
2007-09-28 00:30:41 · answer #4 · answered by Anonymous · 0⤊ 0⤋
those lines mean "absolute value". Absolute value is the number of places a number is from 0. The absolute value of -3 is 3, likewise the absolute value of 3 is 3. Basically, it is always positive.
So if a=-4 and b=2:
I-4/2I=2 and -4/2=-2
so if either a or b is negative, this statement would be false.
2007-09-28 00:31:29 · answer #5 · answered by crazymommy3 4 · 0⤊ 0⤋
| | around a # means absolute value. For example
|-20| = 20.it is always a positive answer.
2007-09-28 00:29:44 · answer #6 · answered by Katelynn 2 · 0⤊ 0⤋
They are absolute value bars. They mean to strip the sign. Positive remains positive, negative changes to positive. Sometimes a/b is negative. I a/b I is always positive.
2007-09-28 00:29:35 · answer #7 · answered by Kate v.7.0 6 · 0⤊ 0⤋
ex:
l4/-2l = 4/-2 ---> not true
l-2l = -2
2= -2 is FALSE.
The symbol l l around a # is an absolute value.
check the below link for help and more meaning as to what the symbol means.
hope this helps! :)
2007-09-28 00:31:21 · answer #8 · answered by dancelikewhaaaat 1 · 0⤊ 0⤋
|-5| means 5
if a is > 0 and b is < 0 (or other way around)
a/b is gonna be < 0
but | | is never < 0
so for example for (-3/4):
| (-3/4) | = 3/4
2007-09-28 00:32:30 · answer #9 · answered by Anonymous · 0⤊ 1⤋
| | around a # means absolute value or that it doesn't matter if the numbers are positive or negative.
2007-09-28 00:29:51 · answer #10 · answered by soundproof 3 · 0⤊ 0⤋