HELP PLEASE BRAINLIEST 1. When you add two opposite numbers (Ex. -4 and 4 or 10 and -10), they will cancel each other out.

True

False

2. The OPPOSITE of multiplying by a number is to subtract by a number.

True

False

True, False

Step-by-step explanation:

I am unsure as to why this is considered High School Math but here’s the reasoning.

For question 1, adding two opposite numbers will result in a cancellation to 0 because the numbers will simply be adding or subtracting themselves. 4+ (-4) = 0. Same with 10 + (-10).

For question 2, the opposite of multiplying by a number is to divide by the number, not subtracting. If you divide a number by the same number you multiplied with intially, you will always receive the same initial number. With subtraction, there is the possibility that this will not work. For example, 3 x 8 = 24, but 24 - 8 ≠ 3.

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.