When rounding to the nearest tenth, look to the hundredths place. Since 9 is in the hundredths place in this number, which is greater than 4, we round up, so the 8 becomes a nine. The answer is therefore 2.9.
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To round 2.89 to the nearest tenth, we look at the hundredths place, which is 9 in this case. Since 9 is 5 or greater, we round up. Therefore, 2.89 rounded to the nearest tenth is 2.9.