Tom is walking his dog in the park. He notices that there are tricycles and bicycles parked on the bike rack at the park. There are a total of 23 vehicles with a total of 52 wheels. Using the variables "b" for bicycles and "t" for tricycles. Required:
Write the system of equations that represents the number of vehicles and the number of wheels.

The surface area of the triangular prism is .

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

Can someone, me with this.i really need with this