Final answer:
To find the average of the three measured masses, we add them up and divide by 3. The average is 9.1 kg.
Step-by-step explanation:
In this problem, we are given three measured masses and we need to find their average with correct precision. The three measured masses are 7.56 kg, 6.052 kg, and 13.7 kg. To find their average, we add up the three masses and divide by 3. This gives us (7.56 kg + 6.052 kg + 13.7 kg) / 3 = 27.312 kg / 3 ≈ 9.104 kg. Since the least precise measurement is expressed to the 0.1 decimal place (13.7 kg), our final answer should also be expressed to the 0.1 decimal place. Therefore, the average of the three measured masses, reported with the correct precision, is 9.1 kg.