30%
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Three tenths (3/10) as a percentage is written as 30%. In decimal form it would be written as ".3".
Percent is out of 100 so 1 tenth would be 10 and 2 tenths would be 20. So 2 tenths is 20%
4/5 1.3 means 1 plus 3 tenths. 1 is ten tenths. So the total is thirteen tenths 13/10. This process is called creating a common denominator ( in this case, everything in tenths). 4/5 is eight tenths 8/10, i.e. 0.8
YES 4 tenths is 40%, 0.40. 3 eighths is 37.5%, 0.375.
(7/10)^3 = (7^3)/(10^3) = 343/1000 = 0.343