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Mathematics 18 Online
OpenStudy (anonymous):

what is the absolute value of -21

OpenStudy (aroub):

21

OpenStudy (anonymous):

21- the absolute value is always positive

OpenStudy (anonymous):

with absolute values. you forget the signs!

OpenStudy (aroub):

yea i want to ask a question abt the absolute value for example u have absloute value of 2-1 will it satay the same or becomes 2+1 ???

OpenStudy (aroub):

stay*

OpenStudy (anonymous):

21

OpenStudy (anonymous):

absolute values are about numbers.. not operations.. |2-1| is |1| which is 1.

OpenStudy (amistre64):

absolute value measures distance; not direction. -21 is: 21 away from 0

OpenStudy (aroub):

oh okay thanks aliciacotts!! :D

OpenStudy (amistre64):

or rather, distance IS an absolute value.

myininaya (myininaya):

|x|=x if x>0 |x|=-x if x<0 |x|=0 if x=0 |a+b|=a+b if a+b>0 |a+b|=-(a+b) if a+b<0 |a+b|=0 if a+b=0

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