This may well depend upon what kind of English you speak (or write). For standard English, it is a compound term and so would properly be hyphenated. For American English, that may not be the case. If you are applying for a job and want to ensure you do not make yourself look stupid, call your local newspaper. If you follow what your local press does, you should be fine.
no
The dictionaries that list it use a hyphen.
No, excitingly is one word so you would not use a hyphen in it.
You do not use a hyphen when writing square feet. Using a hyphen would make it one word which should not be the case.
It isn't in the dictionary, so it'd be best to use a hyphen.
no
Yes, whenver using square-foot you should use a hyphen
It's not a word in the dictionary, so yes, use the hyphen.
A hyphen is a "dash" that we use to put a compound word together. Such as 24-hour clock or 42-foot.
In a range name instead of using a space or hyphen, use a?
The term "electronic commerce" or "E-commerce" describes the use of the internet to conduct business transactions.
After a prefix and before a suffix