Javier puso en una carretilla 6 1/2 kg de cemento, 1 3/4 kg de cal y 7 tabiques que pesan 1/8 kg cada uno,¿cuanto peso lleva en la carretilla? ponganla operacion pls

Find the value of the cosine for angle a

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 8/12+8/11 in another way than and improper fraction