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Justify Reasoning Consider the two problems below. Which values in the problems are represented by negative numbers? Explain why.(1) A diver below sea level ascends 25 feet to a reefat – 35.5 feet. What was the elevation of the diver before she ascended to the reef?(2) A plane descends 1.5 miles to an elevation of 3.75 miles. What was the elevation of the plane before its descent?

User Praveen Srinivasan
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\begin{gathered} (1)\text{The elevation of -35.5 and the elevation after ascending are both represented by negative numbers} \\ i.e\text{ if the diver ascend 25 f}eet\text{ and started }at\text{ - 35.5 f}eet\text{ she would end up at -15}.5\text{ f}eet\text{ which is still below the sea level} \\ so\text{ it's negative.} \\ (2)The\text{ change in elevation is represented by a negative number since the plane is descending} \end{gathered}

User Michael Han
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