Paul's dad made pot pie and the family ate 4/8 of it and Paul ate 2/8. How much remains?

1/4 of the pie remains

Step-by-step explanation:

family ate = 1/2

Paul ate = 1/4

1/2 + 1/4 = 3/4 eaten

so , 1/4 remains

i need a picture

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.