Final answer:
To estimate the sum of 69 / 129 / 139 / 97, we calculate the total of these numbers and divide each by the total, then sum the results. The closest estimate given is 0.235.
Step-by-step explanation:
To find the estimated sum of the numbers provided (69, 129, 139, 97), we must first add these numbers together. After calculating the sum, we divide by the count of the numbers to find the average, and then use this information to estimate the sum when each number is divided by the total sum of the numbers. The total sum would be 69 + 129 + 139 + 97, which equals 434. Since we want to estimate the total sum when each number is divided by 434, we need to analyze the provided options. Option 2, which is 0.235, is closer to what we get when we divide each number by 434 and sum them up. Therefore, the estimated sum is 0.235.