Question

A typical person has an average heart rate of 71.0 beats/min. Calculate the given questions. How many beats does she have in 3.0 years? How many beats in 3.00 years? And finally, how many beats in 3.000 years? Pay close attention to significant figures in this question.

Answer 1

Answer:

111,952,800 beats in 3 years

Step-by-step explanation:

71 beats/minute, 60 minutes/hour ~ 71x60=4,260 beats/hour

24 hours/day ~ 4,260x24=102,240 beats/day

365 days/year ~ 102,240x365=37,317,600 beats/ year

37,317,600x3=111,952,800 beats in 3 years

Answer 2

The heart beats 111952800 times in 3 years

From the given question, we just have to find the rate at which the heart beats.

Given;

• 71 beats in 1 minutes

Rate at which the heart beats

we can start by solving how many minutes are in 1 year.

To do that, we have to multiply 60 minutes by 24 hours by 365 days

$60*24* 365=525600$

We have 525600 minutes in 1 year

Now, we can multiply this value by 71 to know the number of beats in 1 year.

$525600 * 71 = 37317600$

The heart beats for 37317600 times in a year.

Let's multiply this value by 3 to know how many times it beats in 3 years.

$37317600 * 3 = 11952800$

The heart beats 11952800 times in 3 years.

Significant figures

We are also asked to calculate 3.0, 3.00 and 3.000 years

In this case, 3.0 = 3.00 = 3.000  and the rate at which the heart beats is uniform or equal across the three times given.

learn more about rates here;

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