Can I join the numeric text box and check box input type in the matrix survey tool?

Unfortunately, it is not possible to have different input fields are not supported with Matrix field. You may consider using Configurable list widget to have different input fields. Please refer to the guide below that can help you with using the widget.

http://www.jotform.com/help/282-How-to-Set-Up-the-Configurable-List-Widget

Please give it a try and let us know if you need any further assistance. We will be happy to help.