The ratio of girls to boys in liza’s classroom is 5 to 4. how many girls are in her classroom if there is a total of 27 students?

Rewrite the hyperbolic equation 4y^2 -9x^2 +54x-8y-113=0

Does the point (1, sqrt 7) lie on circle shown.

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).