The quotient of the opposite of 30 and 6 plus the opposite of 8

Which segments are congruent? o jn and ln o jn and nm o in and nk onk and nm

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

Answer pls man im trying to get out of summer school