1
vote
1answer
123 views

How do I write 'first and second order' properly?

I am writing about first-order and second-order quantities. Should I put one hyphen, as in "first and second-order", or two, as in "first- and second-order". Or should I do something ...
-5
votes
2answers
157 views

Should “forty-year” in this context be hyphenated? [duplicate]

Possible Duplicate: Pluralization rule for “five-year-old children”, “20 pound note”, “10 mile run” Mr. Willow’s more than forty-year experience in ...
50
votes
14answers
6k views

“Email” or “e-mail”?

Which way of writing the word: "Email" or "e-mail" is correct? Both variants seem to be in wide use. If both ones are okay, maybe there is a difference in contexts they have been used (one is more ...