A submarine is at a depth of 150 meters below sea level. It descends another 75 meters. The new depth of the submarine is _____meters.
Answer & Analysis
Analysis
Question Analysis
This question tests the application of integer operations in a real-world context, specifically the addition of negative numbers to represent descending depths.
Key Concept Explanation
The key concept here is understanding that descending further below sea level involves adding a negative number to an already negative number.
The formula is -a + (-b) = -(a + b)
The initial depth is -150 meters, and it descends another 75 meters, which is represented as -75 meters.
Step-by-step Solution
1. Represent the initial depth: -150 meters.
2. Represent the additional descent: -75 meters.
3. Add the two depths:
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