A certain motor uses six expensive gears continuously. To save wear and tear on the gears, two spare gears are substituted in rotation so that all eight gears receive the same amount of usage. In one month, any six gears make 20,000 revolutions as a unit. If all eight gears are used equally, how many revolutions does each gear make in a month?

22 dimes and 9 nickels

step-by-step explanation:

good luck on your studies! : )

david edward.

answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°

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step-by-step explanation:

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