How many solutions does the equation have? p−2(4−3p)=2p+7 a.0 b.1 c. infinitely many

option:B

Step-by-step explanation:

We are given the equation

if we will get a unique value of p on solving the equation then it will have '1' solution.

so on solving for the above equation we have:

Hence we get a unique value for 'p'.

so option B is correct.

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.