Tommy is measuring his bedroom to determine how much paint he needs to cover the walls. One wall is 15 feet long, but Tommy records the length as 13.5 feet.
What is the percent error in Tommy's measurement?
1.596
1096
11.196
9096

Tommy's percent error is 10%.

Step-by-step explanation:

Percent error is found with the formula , where P is the percent error, is the actual value that you measure, and is the accepted value or the expected value. For instance, the accepted value for specific heat of water is:

This would also be the expected value in a lab experiment.

We are given the accepted value of 15 feet. Therefore, we know that this is Then, we see that Tommy measures the length as 13.5 feet - this is

Finally, we need to place these values into the equation and solve for P.

Therefore, Tommy's percent error is 10%.

is this part of a question or something

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl