Answer :
Answer:
If Janelle was at sea level then the altimeter would read 0. If she was above sea level then the altimeter would read above 1. If she was below sea level then the altimeter would read below or at -1.
Step-by-step explanation:
This is similar to negative and positive numbers.
The position of an object relative to sea level can be deduced using the positive and negative signs. Hence,
- Reading at sea level = 0
- Positive reading = above sea level
- Negative reading = below sea level
An object which is exactly at sea level is interpreted to at the 0 distance.
Points below sea level always takes a negative sign, hence, 4 meters below sea level is written as - 4 meters
Points above sea level always takes a positive sign, hence, 4 meters above sea level is written as +4 meters
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