If a=2b=3c=6, find the value of a+2b-4c how to calculate this one

For this case we have the following expression:

Substituting the given values we have:

Rewriting we have:

The value of the expression is given by:

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.

f(x) has value 150 at x= 0

and 0 at x= 3

so d(f(x))/dt = slope = -150/3 = -50