The correct spelling of hyphen is nephyh
No.
No, faux pas doesn't require a hyphen.
No, they are two separate words.
Yes. "Hard-working" is a compound adjective, and therefore requires a hyphen between the two words. It is also correct to omit the hyphen and use the single word, "hardworking."
Yes it should be hyphenated.
These are two words. There is no hyphen in the concept. In charge means to have leadership in English, so there is no hyphen to connect the two.
No, a hyphen is not needed.
a hyphen connects two words, a dash gives a pause between two words....
No, you do not put a hyphen between the words "eighteen" and "eighties."
75,000 = seventy-five thousand.
No.
I do not believe that multitasking is supposed to have a hyphen.