Not usually. The word playoff has become a valid compound word but play-off is a variant that is still used. Some dictionaries list only the hyphenated form, but include the unhyphenated version in their word lists.
Some sports and other competitions may use the hyphenated form because that is the way they were legally established. Most sports do not.
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
No, "homework" shouldn't be hyphenated.
All-consuming is hyphenated
Yes, end-product is hyphenated. It is a noun and treated as one word which is hyphenated.
The synonym for sleeping is not hyphenated, just "subconscious".
It is not hyphenated.
No it's not hyphenated.
Motorcycle is not hyphenated
words are only hyphenated when they have a separate meaning when separated than they do when hyphenated
No, "hardworking" is not hyphenated.
Yes it should be hyphenated.
It can be. Some words can be seen both hyphenated and non-hyphenated.
Yes it should be hyphenated.
The word desperate hyphenated
No it shouldn't be hyphenated.
All-consuming is hyphenated
Yes, "low-to-intermediate" should be hyphenated when used as a compound modifier before a noun.