Question

Deeana say that the human beats an average of 80 beats per minute.she said that means that the human heart beats 4.8 times 10^3 beats per hour.Is she correct?Explain.

Answer 1

Deana's claim is correct that the heart beats 4.8*10^3 times per hour.

Explanation:

Given that human heart beats 80 time per minute.

In order to check Deana's claim we have to calculate number of beats in one hour.

As we know that

1 hour = 60 minutes

So the heartbeats in 60 minutes:

`= beats\ per\ minute * 60\\=80*60\\=4800\ beats`

Converting the result into scientific notation gives us:

`4800 = 4.8 * 1000 = 4.8*10^3\ beat`

Hence,

Deana's claim is correct that the heart beats 4.8*10^3 times per hour.