An airline travels 135 miles in 15 minutes whats its speed in miles per hour

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

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83

Solve the equation for b: a= (1/2)(b)(h)