Answer:
The correct option is C. The value of z is 10.
Explanation:
According to the property of parallelogram, then opposite interior angles of a parallelogram are equal.
From the given graph it is clear that in parallelogram ABCD, angle A and angle C are opposite interior angles.
Using the property of parallelogram,
(opposite interior angles of a parallelogram)
![5z^(circ)=50^(circ)](https://img.qammunity.org/2019/formulas/mathematics/college/xxsagm7o90yqvmd79nheezudcfi9eevsrd.png)
![5z=50](https://img.qammunity.org/2019/formulas/mathematics/college/b5kngp1i15r0s81k8w2enludsf0ayxw2o1.png)
Divide both sides by 5.
![z=(50)/(5)](https://img.qammunity.org/2019/formulas/mathematics/college/khd3qtqq261ub2o35t1s3n6xlagvclnv56.png)
![z=10](https://img.qammunity.org/2019/formulas/mathematics/college/5ve2st95jr1hcx3aokpkovi69mgoubyakv.png)
The value of z is 10. Therefore the correct option is C.