What are the values of a, b, and c in the quadratic equation 0 = 5x – 4x2 – 2?

a. a = 5, b = 4, c = 2
b. a = 5, b = –4, c = –2
c. a = –4, b = 5, c = –2
d. a = 4, b = –5, c = –2

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.

trapezoid

step-by-step explanation:

first i plotted all my points on a grid graph

i made sure all of them were in the correct quadrant

then i saw it was a trapezoid or a quadrilateral