What is the standard deviation of the following data set: [7, 9, 11, 13, 16]?
+
What is the limit of (x^2 + 3x - 2) / (2x + 1) as x approaches 2?
+
Question: In triangle ABC, angle A measures 60 degrees. The angle bisector of angle A intersects side BC at point D. Given that BD = 6 cm and DC = 4 cm, find the lengths of sides AB and AC.