Which of the following is a trinomial with a constant term?

D. x + 4y + 7

Step-by-step explanation:

A constant term is a term that is a number with no variables (letters) attached to it.

In this case, D is your answer, for the term 7 is a constant, with no variables next to it.

~

D.

Step-by-step explanation:

We are asked to choose the trinomial with a constant term.

We know that trinomial is an expression with three term, in which two terms will have a variable and one term is constant.

Upon looking at our given choices, we can see that option D is the correct choice as it has two terms with variable x and and a constant 7.

Therefore, the correct choice is .

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.