Erin has two pieces of cord, one 12 feet long and the other 18 feet long. She wants to cut them up to produce many pieces of cord that are all of the same length, with no cord left over. What is the greatest length, in feet, that she can make them? feet

15 pieces of string all 2 ft long

Step-by-step explanation:

12 + 18 ft = 30 ft

30 / 2 = 15

15 pieces of string

2 ft

The answer would be 6 because that is the greatest common factor that they both have in common

Step-by-step explanation:

12÷6=2   &    18÷6=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.