Anumber n is more than 9 units from 3

The required inequity is:

The required solution is:

Step-by-step explanation:

Consider the provided information.

The given statement is A number n is more than 9 units from 3.

Let the number 'n' is more than 9 units from 3.

Since more than 9 unit is distance, and distance can be in both the direction so take the absolute value as shown.

Thus, the required inequity is:

Now we can solve it as shown.

Hence, the required solution 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.

answer are

step-by-step explanation: