When data consist of rates of change, such as speeds, the harmonic mean is an appropriate measure of central tendency. The harmonic mean for n data values, assuming no data value is 0, is given by the equation below. Suppose you drive 52 miles per hour for 100 miles, then 74 miles per hour for 100 miles. Use the harmonic mean to find your average speed. (Round your answer to two decimal places.)

The average speed using harmonic mean is 61.08 miles per hour.

Step-by-step explanation:

We are given the following in the question:

52 miles per hour for 100 miles, then, 74 miles per hour for 100 miles.

We have to use harmonic mean to find the average speed.

Relation:

Total time:

Total distance:

Average speed:

Harmonic mean =

Thus, the average speed using harmonic mean is 61.08 miles per hour.

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: