Question #34fbb

1 Answer
Oct 14, 2016

~5.50%~5.50%

Explanation:

The equation for percent error is

|a-m|/a*100|am|a100

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

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

Now the equation is |218-230|/218*100|218230|218100

First, subtract the numbers inside the *absolute value bars

218-230=-12218230=12

The absolute value of -1212 is 1212.

Now the equation is 12/218*10012218100
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.