The perimeter of the rectangle below is 17.6 meters. write an equation that shows how to find the perimeter using the given lengths. then identify the length and width of the rectangle?

Can you simplify 4/7? 24 points will be awarded!

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 equation represents a direct linear variationa. y=x2b. y=2/5xc. y=1/xd. y=x+3