Question

the duration of the cardiac cycle in an 89 year old woman is 1.4 seconds. this means that her heart beat rate is approximately​

Answer 1

I think yes her heart beat rate is approximately

Answer 2

Answer:

43 beats per minute.

Explanation:

The cardiac cycle is the time it takes for the heart beat after one heart beat.

Heart beat rate is the number of times the heart beats in sixty seconds.

$1\ beat=1.4\ seconds$

$\\\Rightarrow 1\ second=\frac{1}{1.4}\ beats$

$60\ seconds=60\times \frac{1}{1.4}=42.85$

Hence, her heart rate is 43 beats per minute.