The things i see on this app

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

Find │7│. a. 1 over 7 b. –7 c. 7 asap i always mark brailiest who me so

Graph the linear equation. find threepoints that solve the equation, then ploton the graph.-x-3y=-6