In a large mixing bowl, combine the cooked and cooled pasta with the coleslaw mix.
In a separate bowl, whisk together the mayonnaise, apple cider vinegar, sugar, salt, pepper, and garlic powder until smooth.
Pour the dressing over the pasta and coleslaw mixture and toss to coat evenly.
Cover and refrigerate for at least 2 hours before serving to let the flavors meld.
Give it a good stir before serving.