15 4/10....so u know it is either gonna round to 15 or 16. It all depends on ur fraction. If 4/10 is larger or equal to 1/2, ur number rounds to 16....but if 4/10 is less then 1/2, ur answer stays 15.
4/10 reduces to 2/5.....little clue...**.if the numerator is less then half of the denominator, then ur fraction is less then 1/2. But if ur numerator is more then half of the denominator, then ur fraction is more then 1/2.
so ur numerator is 2 and ur denominator is 5.......2 is less then half of 5 because half of 5 is 2.5.....therefore, 2/5 is less then 1/2.
so that means 15 4/10 rounded to the nearest whole number is 15.
By scientific notation I am assuming you mean standard form, as that is used primarily in scientific calculations. The answer in standard form would be I hope this helps!
