Question

complete the story so that the answer to the question is 0. rosanne is learning to scuba dive. at her first dive, she went down 20 feet below the surface of the water. then, she swam a distance of feet. how far below the surface of the water was rosanne then?

Explanation:

Step1: Understand the goal

We need the final depth to be 0. She started at 20 feet below the surface. So we need a movement that brings her back to the surface.

Step2: Determine the direction and distance

To get from 20 feet below to 0 (surface), she needs to swim up (opposite of down) a distance equal to how far she went down, which is 20 feet. So the first blank should be "up" and the second blank should be 20. Mathematically, if we represent depth below the surface as positive, starting depth is +20. Swimming up 20 feet is a change of -20. So \(20 + (-20)=0\).

Answer:

First blank: up, Second blank: 20. So the completed story is: Rosanne is learning to scuba dive. At her first dive, she went down 20 feet below the surface of the water. Then, she swam up a distance of 20 feet. How far below the surface of the water was Rosanne then? And the answer is 0.