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Earn +20 ptsQ: The half life of fluorine-20 is 11.4 seconds After seconds 1'4 of the original amount of fluorine-20 will remain?
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The remainder is 2-p or 0.5p of the original amount.
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Multiplying a function by -1 will make it a reflection of the original function across the x axis.
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Put the values that you find (as the solution) back into one (or more) of the original equations and evaluate them. If they remain true then the solution checks out. If one equation does not contain all the variables involved in the system, you may have to repeat with another of the original equations.
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