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Foraging bees often move in straight lines away from and toward their hives. Suppose a bee starts at its hive and flies 650m due east, then flies 400m west, then 590m east.
How far is the bee from the hive?
Express your answer with the appropriate units.
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Added Fri, 24 Jul '15
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Since the bee only travels west and east, it travels in a 1-D line. Therefore, we can consider east as positive and west as negative.

Numerically, we have:
650m-400m+590m=840m, where subtraction indicated westward direction and addition indicated eastward direction.

Therefore, the bee is 840m (east) from the bee hive.
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Added Fri, 24 Jul '15
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