Find the image of (9, 5) after a counterclockwise rotation of 270° about the origin. a. (5, -9) c. (-9, -5) b. (-5, -9) d. (9, -5)

Is fgh ~ jkl? if so, identify the similarity postulate or theorem that applies.

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

Math question.. plz me .. best answer all