The point located at (3, -1) is reflected across the y-axis. what are it's new coordinates?

To prove that def ~ gfh by the sss similarity theorem using the information provided in the diagram, it would be enough additional information to know that

What are the sotions to the quadratic equation 9x^2=4

The figures below are made out of circles, semicircles, quarter circles, and a square. find the area and the perimeter of each figure and give your answers as a completely simplified exact value in terms of π (no approximations).