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A scientist estimated that a mixture would need 3 milliliters of a chemical to balance. The actual amount needed was 7 milliliters. What was the percent error of the scientist's estimation?

A133.33%
B3%
C42.86%
D57.14%

Verified Answer :

Letter C is the answer

Answer:

57.14%

Step-by-step explanation:

Error(E)is defined as the percentage difference an estimate(e) amount is from the actual(a) amount. The actual amount need was 7 mililters and the estimate was 3 mililiters.

Error is defined as:

\(E=(a-e/a)*100\)

\(E=(7-3/7)*100=57.14\)

The percet error if the scientists estimation is 57.14%

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