- Since 7 is in the tenths place, 7.7089 is between 7.7 and 7.8
- 7.75 is the midpoint between 7.7 (7.70) and 7.8 (7.80)
- As illustrated on the number line, 7.7089 is less than the midpoint (7.75)
- Therefore, 7.7089 rounded to the nearest tenth (one decimal place) = 7.7
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