1.
Find four consecutive odd integers such that the sum of the second and third is 19 grater
than the fourth.

Let be the first integer. Then the next three odd integers are

The sum of the second and third integers is 19 greater than the fourth, so that

Then the first integer is 19, and the four integers in question are 19, 21, 23, and 25.

5y

step-by-step explanation:

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.