X These line plots show the results of a survey of 10 boys and 10
girls about how many hours they slept the previous night
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Select from the drop-down menus to complete each statement
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The range Choose
The mean
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Girls

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.

36

step-by-step explanation:

b and c

step-by-step explanation: