Mathematics
Mathematics, 23.10.2020 17:20, nathanbrockdac

An airplane started at 0 feet. It rose 21,000 feet at takeoff. It then descended 4,329 feet because of clouds. An oncoming plane was approaching, so it rose 6,333 feet. After the oncoming plane passed, it descended 8,453 feet, at what altitude was the plane flying?

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An airplane started at 0 feet. It rose 21,000 feet at takeoff. It then descended 4,329 feet because...

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