Question

Oni was timing her 100-meter sprints. Her first five sprints were 12.568 seconds, 11.426 seconds, 12.324 seconds, 11.981 seconds, and 12.601 seconds. Which two estimation techniques will give the same result for the total number of seconds for all five sprints?

A. front-end and clustering
B. front-end and rounding to the nearest tenth
C. clustering and rounding to the nearest tenth
D. rounding to the nearest tenth and rounding to the nearest hundredth

Answer 1

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The first technique one could use in estimating the total number of seconds spent for five sprints Oni made are these:

1. Add everything up and you will get the total seconds which is 60.90 seconds all in all.

2. Do the first method and divide the sum with 60 (seconds) in order to get the minutes and the remainder will be the seconds, as in writing or reading the time. 60.90 divided by 60 is 1min and 0.9 seconds.

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For this question correct answer is

Option D rounding to the nearest tenth and rounding to the nearest hundredth

If we round of the nearest 10th to 100th digit then we can easily get the same result of total number of seconds in all 5 sprints

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Answer 2

Answer:

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Step-by-step explanation: