Our hearts beat approximately 70 times per minute. Express in scientific notation how many times the heart beats over a lifetime

Question

3 years ago

6

of 73 years (ignore leap years). Round the decimal factor in your scientific notation answer to two decimal places.

1 answer:

earnstyle [38] · Answer 1 · 2022-01-24T19:03:27+03:00

Answer:

2.69 x $10^{9}$

Step-by-step explanation:

We are given the heart's speed - 70 bpm

We count the number of minutes in 73 years :

We multiply the heart's bpm with 73 years worth of minutes

38,368,800 x 70 = 2,685,816,000

Write the number in scientific notation = 2.68581 x $10^{9}$ ≈ 2.69 x $10^{9}$