Answer:
Let
y1---------> is the high of the mountain Ojos del Salado in meters, above sea level
y2---------> is the deep of the Trench in meters below sea level
we know that
so
Find the halfway elevation
calculate the distance
substitute the values
Find the midpoint
=15,000/2=7,500\ m
The midpoint is located below the sea level
so
therefore
the answer is
The halfway elevation is about below sea level
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