Question

Vario was scuba diving at an elevation of −20 feet and then descended 20 feet more.

Dario and another person scuba diving. The other person is diving at negative thirty feet.

A number line from negative fifty to fifty by tens is shown.

After the descent, what was his elevation in relation to another diver at an elevation of −30 feet?

Enter the correct answers in the boxes.

Equation: $$

Relative elevation:
ft

Answer 1

Vario's elevation, in relation to the other scuba diver at -30 feet, is -10 feet.

Step-by-step explanation:

In this scenario, Vario, a scuba diver, starts at an elevation of -20 feet. He then descends 20 feet more, resulting in a total descent of 40 feet. The other person is diving at an elevation of -30 feet.

To find Vario's elevation in relation to the other diver, we need to calculate the relative elevation. Relative elevation is the difference between the elevations of two locations.

So, to find the relative elevation, we subtract the elevation of the other diver (-30 feet) from Vario's final elevation (which is -20 feet - 20 feet = -40 feet):

Relative elevation = Vario's elevation - Other diver's elevation = -40 ft - (-30 ft) = -40 ft + 30 ft = -10 ft

Therefore, Vario's elevation, in relation to the other diver at -30 feet, is -10 feet.