Respuesta :

LukeG1

Answer:

C,  z = 45°

Step-by-step explanation:

    Statements                                               Reasons

   2z + 90° = 180°                                PWP, Def. of Right Δ

      2z = 90°                                                   Algebra

        z = 45°                                                    Algebra

(PWP stands for Partial-Whole-Postulate)

Hope this helps and good luck with the rest of your assignment :)