PLEASE ANSWER ALL QUESTIONS 69 POINTS WILL MARK BRAINLIST

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.

10 ! in a race, nick is 50 feet in front of jay after ten seconds. how fast can nick run, if jay can run 20 feet per second?

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).