Can i get sone with math i inderstsnd the division but not the multiplying much.
(the ones i havw circled are ones i have to do.)

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.

In trapezoid bath, ah=19.7 and et=16.1. identify be.

The estimated number of people to attend the last bengals game of the season was 2000. the actual number of fans attending was 1200. by what percent did the estimate differ from the actual?