One hundred is represented by the letter C. CXIX would be the correct notation.
The Roman numeral which represents the number 119 is CXIX
119
In todays modern usage of Roman numerals: 119 = CXIX But the ancient Romans would have wrote it out quite differently
The roman numeral for 5 is: V
IV.
MCMLXII
476 = CDLXXVI in Roman numerals
You cannot because no Roman numeral would include 5 "x"s.
Roman Numeral for the number 2 is II.
It is: 355 = CCCLV
It is: 1812 = MDCCCXII
To write the number 9 in Roman numerals, you would use the symbol 'IX'. This is made by combining the Roman numeral for 1, 'I', and the Roman numeral for 10, 'X', subtracting 1 from 10.