Final answer:
To determine the number closest to 9, calculate the distance between each number and 9. The number with the smallest distance is the closest.
Step-by-step explanation:
To determine which of the given numbers is closest to 9, we need to compare the distance between each number and 9. The number that has the smallest distance from 9 would be the closest.
Let's calculate the distance between each number and 9:
- Distance from 83 to 9: 83 - 9 = 74
- Distance from 82 to 9: 82 - 9 = 73
- Distance from 79 to 9: 79 - 9 = 70
- Distance from 78 to 9: 78 - 9 = 69
From the calculations, we can see that the number 78 is closest to 9.
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