HeLp pls sOmeBoDy and tyy

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.

Find the value of x for which abcd must be a parallelogram -9-6x x-30

Which shows the correct substitution of the values a,b and c from the equation 1=-2x+3x^2+1