How many teams of 3 students can be chosen from a group of 12 students?

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.

What power can you write to represent the volume of the cube shown? write the power as an expression with a base and an exponent and then find the volume of the cube

Including 6% sales tax, an inn charges $135.68 per night. find the inns nightly cost