After taking a 70 point test, a student guesses that he got 65 points correct. Later he finds out he got 67 points correct. Calculate the percent error of his guess to 3sf.

Percent error = 4.29%

Step-by-step explanation:

Percent error can be defined as a measure of the extent to which an experimental value differs from the theoretical value.

Mathematically, it is given by this expression;

Given the following data;

Experimental value = 67

Theoretical value = 70

Substituting into the equation, we have;

Percent error = 4.29%

6.9

step-by-step explanation:

simple math really

6 1/2 times 0.6 = 3.9

but if you are just doing 6 and not 6 1/2 then the answer is 3.6

687.09 dollars       happy now

step-by-step explanation: 6870

1857 times .63 equals 1169.91 subtract that from 1857 you get 687.09