Solve i = prt for p when i = 5,480, r = .04, and t = 7.

19571.43

Step-by-step explanation:

We are asked to solve for P using formula , when .

Upon substituting our given values in simple interest formula, we will get:

Switch sides:

Now, we will divide both sides of our given equation by 0.28 as:

Therefore, the principal amount (P) is approximately 19571.43.

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.