No.
No, the phrase "hour and a half" is not hyphenated when used in a sentence. It should be written as three separate words. However, when used as an adjective before a noun, it can be hyphenated, like in "an hour-and-a-half meeting."
Yes, "one-hundred-plus-hour workweek" is hyphenated. The hyphens connect the words "one," "hundred," and "plus" to create a compound modifier that describes the noun "workweek." Proper hyphenation ensures clarity and readability in the phrase.
Yes, one-on-one is hyphenated. I don't know why, exactly. It just is.
Yes, end-product is hyphenated. It is a noun and treated as one word which is hyphenated.
No
No, the phrase "top of the line" is not hyphenated.
No, "miles per hour" is not hyphenated. It is written as three separate words.
It should be hyphenated.
Probably not.
No, the phrase "thank you note" is typically not hyphenated when used in a sentence.
The noun phrase 'four week vacation' does not need to be hyphenated.
Yes and no. The out-of-plumb wall should be hyphenated while the wall was out of plumb should not.