Answer:
period = 0.833 s
frequency=1.2 Hz
Explanation:
The period is the duration of time taken for a 1 heartbeat
[tex]period=\frac{1*60}{72} \\=0.833 seconds[/tex]
Frequency is the number of heartbeats per second
[tex]frequency=\frac{72}{60}\\ =1.2 Hz[/tex]