Yes, unless you mean that the car salesman is a small person.
no
an hyphen
If you mean the word for 19, then there is no hyphen and it is nineteen, not nine-teen.
As with many compound terms, it depends on the usage and placement. In general, if the words are used as a modifier directly preceding the modified word, the hyphen is required. Otherwise the hyphen is not used. Examples: * "We use only first-class ingredients." * "Your presentation was first class." Style manuals such as Words into Type and Chicago Book of Stylehave chapters detailing hyphen usage, and they're excellent references for any writer or student.
Yes, if "easy-to-use" is describing something else. An example would be "Answers.com is an easy-to-use tool for gathering knowledge."
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.
In a range name instead of using a space or hyphen, use a?
A hyphen is a "dash" that we use to put a compound word together. Such as 24-hour clock or 42-foot.
No.
You would use a hyphen
no