In class, 5/9 of the students have blue eyes. if 10 students have blue eyes, how many students are in the class in total?

Apinhole camera is made out of a light-tight box with a piece of film attached to one side and pinhole on the opposite side. the optimum diameter d(in millimeters) of the pinhole can be modeled by d=1.9[ (5.5 x 10^-4) l) ] ^1/2, where l is the length of the camera box (in millimeters). what is the optimum diameter for a pinhole camera if the camera box has a length of 10 centimeters

Which of the following circles have their centers on the x-axis? check all that apply.

Which expression is equivalent to the square root of 2 multipllied by 5 divided by 18