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قديم 20-10-2012, 11:31 AM
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تاريخ التسجيل: Aug 2008
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أرجو حل هذه المسألة
Three archers each fire four arrows at a target. Joe’s four
arrows hit at points 10 cm above, 10 cm below, 10 cm to the left,
and 10 cm to the right of the center of the target. All four of
Moe’s arrows hit within 1 cm of a point 20 cm from the center,
and Flo’s four arrows all hit within 1 cm of the center. The contest
judge says that one of the archers is precise but not accurate,
another archer is accurate but not precise, and the third archer is
both accurate and precise. Which description goes with which
archer? Explain your reasoning.