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OpenStudy (anonymous):
A student estimated a mass to be 250 g but, upon carefully measuring it, found the value to be 240 g. What is the percent error of the estimated mass if the measured value is the accepted one? A. 4.2% B. -4.2% C. -4.0% D. 4.0%
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OpenStudy (amistre64):
what the differece between the 2 values?
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