If you add 2 to four times the length of the amazon river, the result is 25,750. find the length of the river

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.

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart

This graph shows which inequality? a ≤ –3 a > –3 a ≥ –3 a < –3