The expression -8 · -8 · -8 · -8 can be expressed as . -84 (-8)4 -(84)

-8 to the power of 4,its an exonent.

Step-by-step explanation:

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answer: 2 litters juice bottle

half of a gallon is 50% of a full gallon 2 litters of juice is 52% of a full gallon

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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.