A sign is 4 1/2 feet wide and 5 1/4 feet long. Find the area of the surface of the sign.

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.

International calls require the use of a country code. many country codes a 3-digit numbers. country codes do not begin with a 0 or 1. there are no restrictions on the second and third digits. how many different 3-digit country codes are possible?

Adiverr from the university of florida women’s swimming and diving team is competing in the ncaa zone b championships