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24-10-2022
Mathematics

Answered

A scientist uses a submarine to study ocean life. She begins at sea level, which is an elevation of 0 feet. She travels straight down for 46 seconds at a speed of 4.8 feet per second. She then ascends for 26 seconds at a speed of 3.5 feet per second. After this 72-second period, how much time, in seconds, will it take for the scientist to travel back to sea level at 4.4 feet per second? Round your answer to the nearest tenth of a second.

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