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OpenStudy (anonymous):
A miner descended 1400 feet into a mine from the mine's entrance. While in the mine, he then rose 800 feet and then descended 450 feet. What was the miner's net gain or loss in altitude from the entrance of the mine?
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OpenStudy (anonymous):
help
OpenStudy (jack1):
|dw:1399376368507:dw|
OpenStudy (jack1):
so 0 - 1400 + 800 - 450 = answer
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