A school contains students in grades 1, 2, 3, 4, 5, and6. Grades 2, 3, 4, 5, and 6 all contain the same number ofstudents, but there are twice this number in grade 1. If astudent is selected at random from a list of all the studentsin the school, what is the probability that she will be ingrade 3?

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.

The parabola opens: y=√x-4 (principal square root) up down right left

What is the best way to answer questions with a x expression in the question. for example 3x + 10x=?