The table shows the amount of sugar needed to make lemonade. Are the quantities proportional? Explain which method you used and how you used it to determine if they were proportionate or not. Sugar (grams)

4

6

8

10

Servings

2

3

4

5

Yes

Step-by-step explanation:

For the first sugar and servings part, 4 for sugar, 2 for servings.

The ratio for this example above it for sugars to servings it 2:1. So every 2 sugars is every 1 serving and this applies to every other of the sugars and servings in the table.

Yes there are propotional.

If you pair them up in proportions:

4/2

6/3

8/4

10/5

If you divide them all you get 2 and that means they are all proportional

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.