Question

Roger has a nail that is 12 centimeters long. He measures and records the length of the nail as 15 centimeters. What is the percent error in Roger's measurement?

Answer 1

So you have to figure out the difference between 15 and 12. So what would that be?

\[15-12=?\]

Answer 2

thank you very much

Answer 3

That's not your final answer.

15-12 is?

Answer 4

15-12 is 3 right

Answer 5

Yes.

So now;

You multiply 3 and 100% because your looking for the percent error.
And since it's 12 as a guess... it will look like;

\[(3/12)(100%)\]
Which is...?

Answer 6

Meant;

(3/12)(100%)

Answer 7

25% /

Answer 8

thanks

Answer 9

You're welcome.