I think it is a Convience Sampling.
Answer:74.55 beat per minute
Step-by-step explanation:
Given
Heart beat is 52 beat per minute
i.e.
beat per sec
If heart rate is increases 1.25 % each sec
suppose B is the heart beat at first second therefore heat beat at 2 nd second


For 3 rd sec


similarly for 3 sec




<span>9/10 divided by 2/5
Convert the divided sign into multiplication while flipping the fraction 2/5 to 5/2
9/10*5/2
Multiply the numerator by the other numerator while multiplying the denominator by the other denominator.
45/20
Simplify
Final Answer: 2 1/4 or 45/20 *They 2 1/4 and 45/20 are the same value. Just written in different ways.</span>