Which of the following sentences could not be used to represent the equation x-5 = -10? Five less than a number is negative ten.
lf a number is decreased by five, the result
is negative ten.
A number subtracted from five is equal to negative ten.
Anumber less five equals negative ten.

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.

y < -3

step-by-step explanation:

-3y - 2 > 7

-3y -2 + 2 > 7+2

-3y > 9

-3y/-3 < 9/-3   (change the inequality sign when multiplying or dividing by a negative number)

y < -3