X+4y=6 y=-x+3 solve each system of linear equations by substitution

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Which expression is equivalent to 4 square root 6 divided by 3 root 2

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.