Write an expression to match the words " three times the sum of 8 and 4".

"Three times the sum of 8 and 4":

Explanation:

In the question we have asked that what will be the mathematical expression for the " three times the sum of 8 and 4".

We have asked with 'Three times the sum of 8 and 4' which means that adding the sum of number '8' and number '4' by three times.

We can write 'Three times the sum' mathematically as '3 '.

We can write 'sum of 8 and 4' mathematically as '

So the final expression comes out to be:

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.