Mathematics, 17.10.2020 04:01 cookieasd9000

An observation deck extends 456 feet out above a valley. The deck sits 406 feet above the valley floor. If an object is dropped from the observation deck, its height h in feet, after t seconds, is given by h=−16t^2+406. How long will it take for the object to be 6 feet above the valley floor?

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An observation deck extends 456 feet out above a valley. The deck sits 406 feet above the valley flo...