no
No, the word "nineteen" does not need a hyphen when written numerically.
It's not a word in the dictionary, so yes, use the hyphen.
No. The word is "pinpoint".
No the word "midday" is not hyphenated.
No, the word "coordinator" is one word.
No, the word "predetermine" is one word.
The word "desperate" doesn't need a hyphen.
Yes, in-home does need a hyphen. It's two words put together to form a word for a different concept.
Yes it should be hyphenated.
Yes it should be hyphenated.
hyphen