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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?
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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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