i beg factor the polynomial: x^2–xy+x–xy^2+y^3–y^2

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

Savannah is painting a striped background for a mural on a wall that is 1515 yards long. she wants a total of 9696 stripes that are all the same width. which calculation should savannah use to decide how wide to make each stripe?

How do you solving the solution of each system using elimination?