What is 8 divided by 5/6

Having a hard time understanding this question (see attachment).

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi