Algerbra 2/Trigonometry - January 2011

34 Assume that the ages of first-year college students are normally distributed with a mean of 19 years and standard deviation of 1 year.

To the nearest integer, find the percentage of first-year college students who are between the ages of 18 years and 20 years, inclusive.

To the nearest integer, find the percentage of first-year college students who are 20 years old or older.

35 Starting with sin2A + cos2A = 1, derive the formula tan2A + 1 = sec2A.

Previous Page Next Page




EduSolution -
Helping Students
to succeed!
Vistors' Comments

This is one of the absolute best sites I've found online, and I say that as a teacher who has spent countless hours looking for kid-friendly material on the net. I have no idea how you found the time and energy to put it together, but you have my admiration! - Andrew Cowells, Concord Jr. High