Question

Which of the following is the best estimate for the total change in distance from the group of​ students' original position at the​ surface? Round to the nearest ten.

Answer 1

- 20 feet

Explanation:

Answer 2

The correct answer is option A. -80 feet.

To estimate the total change in distance from the group of students' original position at the surface, we consider the descent of 51.87 feet followed by an ascent of 28.95 feet. Adding these two values gives the approximate total change in distance.

`\[ \text{Total change} = \text{Descent} + \text{Ascent} = 51.87 + 28.95 \]`

Calculating this yields:

`\[ \text{Total change} \approx 80.82 \text{ feet} \]`

Rounding to the nearest ten, the best estimate for the total change in distance is 80 feet.

Among the provided options:

A. - 80 feet

B. - 50 feet

C. - 20 feet

D. - 30 feet

The best estimate for the total change in distance from the group of students' original position at the surface is option A, -80 feet, as it is the closest rounded value to the calculated estimate.