Final answer:
After ascending 48 meters, the hiker is at an elevation of 41 meters below sea level.
Step-by-step explanation:
A hiker stands at an elevation of 89 meters below sea level. If she ascends 48 meters, we need to calculate her new elevation relative to sea level. Ascending means going up or increasing in elevation, so we add 48 meters to -89 meters (her starting point below sea level).
To find the hiker's current location in elevation:
Starting elevation = -89 m (below sea level)
Ascend = +48 m
Current elevation = -89 m + 48 m = -41 m
Therefore, after ascending 48 meters, the hiker's new elevation is 41 meters below sea level.