Answer:
z = 15
Step-by-step explanation:
(I quit brainly because, they deleted 1000+ answers from my account....) however if I want to see answers than I think I have to answer some questions so I'll answer this one.
First we know that y would be 180.
Therefore CD=90
y-cd=90
90=5z+z
90=6z
90=6(15)
90=90
or
90=5z+z
90=6z
/6 /6
15 = z
z = 15
