Translation of "determinateness" into Spanish

Such a measure alone allowed them to determine precisely the extent to which their interests were affected.

Una medida de este tipo es la única que les permite determinar con certeza en qué medida sus intereses están afectados.

I assure them that we share their grief and their determination.

Les aseguro que compartimos su dolor y su firmeza.

With his enthusiasm and determination, he's an example to the rest of the team.

Con su entusiasmo y determinación, él es un ejemplo para el resto del equipo.