Answer:
z = 3
Step-by-step explanation:
Similar polygons have the ratio of their corresponding sides equal to each other. There:
9/z = 6/2
Cross multiply
z*6 = 9*2
6z = 18
z = 18/6
z = 3
It should be B because is a minus is in front of something that is a negative they change to be positive
Divide the bottom into the top for a decimal