Pls help extra points and mark brainlist

h=2 or B

Step-by-step explanation:

if you plug in all the solutions it works

8+h/10

8+2/10

=10/10

=1

so its B

h= 2

Step-by-step explanation:

hope this helps :)

i really need brainliest

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.

eve and marks ratios are equivalent

step-by-step explanation: