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Aliza needs to run at a rate faster than 8.2 feet per second in order to exceed her fastest time in a race. After running for 15 minutes, her coach determines that she is running at an average rate of 5.8 miles per hour. He converts the average rate to feet per second as shown below:

He concludes that she is not running fast enough to exceed her fastest time.

Sagot :

Coach's errors are;

Wrong conversion when converting hour to seconds

There is wrong conclusion since Eliza was running fast enough at a speed of 34ft/s compared to 8.8ft/s

The speed required by eliza is 8.8 ft/s

Converting 5.8miles to feet per second

Taking the coach conversion

This shows that 5.8mi/hr is equivalent to 34.0ft/s in accordance with coach conversion rate.

The coach made the first error by taking 60s as 1hr instead of 3600s as 1hr

The mistake that Eliza is not running fast enough to exceed her fastest time. Eliza is running at pace as her speed at 34ft/s exceed 8.8ft/s.

Hence the second error was the wrong conclusion made by the coach.

  • The average rate is a measure of how much the function changed per unit, on average, over that interval.
  • It is founded from the slope of the line connecting the interval's endpoints on the function's graph.

Learn more about average rate here:

brainly.com/question/895943

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