X+cy=d
x−dy=c
Solve for x and y...
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Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500
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Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).
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