Which expression has the same value as Negative 18 divided by (negative 9)?

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

yes because there is exactly one y value for every x value

for function there can't be more than one value for every x value

the two may have that, even a breakdown is probably offered

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take good notes.

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use mnemonics and other tricks.

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note: the best i know.