Question #34fbb

1 Answer
Pendragon
Oct 14, 2016

#~5.50%#

Explanation:

The equation for percent error is

#|a-m|/a*100#

Where #a=#the actual mass and #m=# the measured mass. Keep in mind that this equation can be used for things other than mass.

So in this case #a=218# and #m=230#

Now the equation is #|218-230|/218*100#

First, subtract the numbers inside the *absolute value bars

#218-230=-12#

The absolute value of #-12# is #12#.

Now the equation is #12/218*100#
#12/218=0.055045...#

#0.055045*100=~5.50%# or About #5.50%#

*Absolute value is the distance of a number from zero, so 1 and -1 both have an absolute value of 1. Basically, just make the solution of the numbers inside the absolute value bars positive.

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