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A scientist uses a submarine to study ocean life. She begins at sea level, which is an elevation of o feet. She travels down 84.5 feet. She then rises 77.8 feet. Next, she descends a second time, 79.8 feet. How many feet must she now rise to get back to sea level? Answer: feet

A scientist uses a submarine to study ocean life.\newline- She begins at sea level, which is an elevation of o feet.\newline- She travels down 8484.55 feet.\newline- She then rises 7777.88 feet.\newline- Next, she descends a second time, 7979.88 feet.\newlineHow many feet must she now rise to get back to sea level?\newlineAnswer: □\squarefeet

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Q. A scientist uses a submarine to study ocean life.\newline- She begins at sea level, which is an elevation of o feet.\newline- She travels down 8484.55 feet.\newline- She then rises 7777.88 feet.\newline- Next, she descends a second time, 7979.88 feet.\newlineHow many feet must she now rise to get back to sea level?\newlineAnswer: □\squarefeet
  1. Determine initial descent: Determine the initial descent.\newlineThe scientist starts at sea level and descends 84.584.5 feet.\newlineInitial descent = 84.584.5 feet
  2. Calculate elevation after first ascent: Calculate the elevation after the first ascent.\newlineThe scientist then rises 77.877.8 feet.\newlineElevation after first ascent = Initial descent - First ascent\newlineElevation after first ascent = 84.584.5 feet - 77.877.8 feet\newlineElevation after first ascent = 6.76.7 feet below sea level
  3. Determine elevation after second descent: Determine the elevation after the second descent.\newlineThe scientist descends a second time, going down an additional 79.879.8 feet.\newlineElevation after second descent = Elevation after first ascent + Second descent\newlineElevation after second descent = 6.76.7 feet below sea level + 79.879.8 feet\newlineElevation after second descent = 86.586.5 feet below sea level
  4. Calculate distance to rise: Calculate the distance needed to rise to return to sea level.\newlineTo get back to sea level, the scientist must rise the same amount she is below sea level.\newlineDistance to rise =Elevation= Elevation after second descent\newlineDistance to rise =86.5= 86.5 feet

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