Yes they will but use cold water never warm or hot water. And if you cut the stems diagonally underwater then stick them in the vase it helps as well they still may only last about a week though.
Lol as a floral designer I gotta say you missed the greenery and you could have taped the vase to make the flowers stand straighter but for just a simple arrangement not horrible lol
I'm not looking to get fancy. Some plants had to come down with only one or two decent flowers left and I just decided to stick them in a vase. Not expecting anything. ¯\_(ツ)_/¯
Although I could do something with those—they just recently opened up and there are more to bloom: