CREATE TABLE table_48421 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

On which date after week 11 was the opponent the arizona cardinals?
SELECT "Date" FROM table_48421 WHERE "Week" > '11' AND "Opponent" = 'arizona cardinals'
SELECT "Date" FROM "table_48421" WHERE "Opponent" = 'arizona cardinals' AND "Week" > '11'