It is 3.9
To write nine tenths as a decimal, it looks like this: .9
3.9
9 and 3/10 as a decimal is 9.3
3.9
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43.9
3.9
Nine and nine tenths in decimal form is 9.9
3 and nine tenths as a decimal is 3.9
59 and 3/10 = 59.3 as a decimal
Nine tenths.
Three tenths is .3 as a decimal.