Question

Fill in the blanks!

Martina is swimming at 4 meters below sea level. She swims up 3 meters and then dives down 5 meters. Then she dives down 3 more meters. How many meters below sea level is Martina?

-4 (Below) - (-4) + (3) + (-5) + (-3)
_ (Up) - 3 + [(-4) + (-5) + (-3)]
-5 (Down) - 3 + ( _ ) = _
_ (Down)

This tells me that she's going to end up at 9 meters below sea level.

Answer 1

Let's break it down step by step to fill in the blanks accurately.

1. **Starting position**: Martina is at -4 meters (4 meters below sea level).

2. **First movement**: She swims up 3 meters.
- Calculation: -4 + 3 = -1
- **Current position**: -1 meter (1 meter below sea level)

3. **Second movement**: She dives down 5 meters.
- Calculation: -1 + (-5) = -6
- **Current position**: -6 meters (6 meters below sea level)

4. **Third movement**: She dives down 3 more meters.
- Calculation: -6 + (-3) = -9
- **Current position**: -9 meters (9 meters below sea level)

Now, let's fill in the blanks:

-4 (Below) - (-4) + (3) + (-5) + (-3)
-1 (Up) - 3 + [(-4) + (-5) + (-3)]
-6 (Down) - 3 + ( -9 ) = -9
-9 (Down)

So, Martina ends up at **9 meters below sea level**.

Your conclusion is correct! She is indeed at **9 meters below sea level**.