Answer:
6
Step-by-step explanation:
15 - 3 = 12, divide that by 2 and your answer is 6.
Answer:The normal resting heart rate for adults over the age of 10 years, including older adults, is between 60 and 100 beats per minute (bpm). Highly trained athletes may have a resting heart rate below 60 bpm, sometimes reaching 40 bpm. The resting heart rate can vary within this normal range.
Step-by-step explanation:
The answer is a and if not D