CREATE TABLE table_40466 ("Rank by average" TEXT, "Place" TEXT, "Perfect 40s" TEXT, "Total" TEXT, "Number of dances" TEXT, "Season" TEXT, "Average" TEXT)

What rank by average has 1 dance on season 9?
SELECT "Rank by average" FROM table_40466 WHERE "Number of dances" = '1' AND "Season" = '9'
SELECT "Rank by average" FROM "table_40466" WHERE "Number of dances" = '1' AND "Season" = '9'