Arectangular photograph is mounted on a square piece of cardboard who sides have lenght of x. the border that surrounds the photo is 3 inches on each side and 4 inches on both the top and bottom. which of the following expressions represents the area of the photograph? select all that apply. a) x^2 b) (x+8)(x+6) c) (x-8)(x-6) d) x^2+48 e) x^2-48 f) x^2+14x+48 g) x^2-14x+48

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

b

step-by-step explanation:

the word superfluous means unnecessary