Which sentence uses hyphens correctly? I ordered two sugar-coated-pies. The pie was sugar-coated. I ordered two sugar-coated pies. The ordered pie was sugar-coated.

"I ordered two sugar-coated pies" represents a correct usage of a hyphen, although it should be noted that this is a bit of a subjective matter. It's up to the author.

Answer;

I ordered two sugar-coated pies

Explanation;

Hyphens has a variety of uses in grammar; For instance;

Hyphens are used to link words that function as a single adjective before a noun.

They are used with compound numbers, and to avoid confusion or awkward letter combinations.

They are also used with certain prefixes and suffixes and in certain special cases.