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For the function w, w(9) = β7, and w(β7) = 9. If y = w(x), what is the value of y when x = β7?
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He weights of 2-pound bags of best dog food are approximately normally distributed with a given mean and standard deviation according to the empirical rule, what percentage of the bags will have weights within 3 standard deviations of the mean? 47.5%68%95%99.7%
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How many kilograms of a 5% salt solution and how many kilograms of a 15% salt solution must be mixed together to make 45kg of an 8% salt solution?
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For the function w, w(9) = β7, and w(β7) = 9. If y = w(x), what is the value of y when x = β7?...
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