Select the answer that correctly orders the set of numbers from greatest to least. 15%, 1/8, 0.2, 0.09

In triangle abc, the length of side ab is 12 cm, the length of side bc is 5 cm, and the length of side ca is 9 cm. find the measure of angle a using the law of cosines.

Wrote and expression for the difference of p and 4

Factor these polynomials and explain how 1. 12x - 3x^2 2. 20 - 240x^2