184. A student estimated a mass to be 40 g. After carefully measuring, she found the actual mass to be 45 g. What is the percent of error?

Step-by-step explanation:

The formula for percent error is:

For this, the measured value is the estimation of 40 grams. The actual value is the true mass of 45 grams.

Solve the numerator.

Divide.

The percent error is about 11%

step-by-step explanation:

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step-by-step explanation:

if you want to solve percent error follow these steps.

1. subtract the accepted value from the experimental value.

2. take the absolute value of step 1.

3. divide that answer by the accepted value.

4. multiply that answer by 100 and add the % symbol to express the answer as a percentage.

if you want to solve percent of change just do this.

1. work out the difference (increase) between the two numbers you are comparing.

2. divide the increase by the original number and multiply the answer by 100. if your answer is a negative number then this is a percentage decrease.

hope this : )