In today's notation it is written as: XVII-XI-MCMLXXXIX
It is: 11 = XI
To write 9 11 1989 in Roman numerals, you would represent each individual number as follows: 9 is represented as IX, 11 is represented as XI, and 1989 is represented as MCMLXXXIX. So, 9 11 1989 in Roman numerals would be IX XI MCMLXXXIX.
The Roman numeral for 11 is XI.
XI-I-MMX
10 = x 11 = xi 12 = xii
In todays modern notation of Roman numerals: VI-XI-MCMLXXXIX Note that the ancient Romans would have wrote out the equivalent of 1989 differently as we now do today
It is: 11 = XI
The number 11 can be represented by the Roman numeral XI
XX.XI.MCMLXXXIX
It is: 11 = XI
Today's modern way of converting 11-19-2009 into Roman numerals is XI-XIX-MMIX.However, the Romans themselves in ancient times would have probably wrote out these numbers as XI-XVIIII-MMVIIII.However, it would be different in Britain and Europe, since we more logically write day-month-year, thus 19-11-2009.
To write 19-11-1987 in Roman numerals, you would write it as XIX-XI-MCMLXXXVII.