What is the value of this expression? -9= 3 x [6 x 3 – (1 + 4)]
A. -63
B. -59
O C. -51
D. -39

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.

For f(x) = 3x+1 and g(x) = x2 - 6, find (g/f)(x)

Aflagpole broke in a storm. it was originally 8 1 81 feet tall. 2 8 28 feet are still sticking straight out of the ground, where it snapped, but the remaining piece has hinged over and touches the ground some distance away. how far away is the end of the pole from the base of the pole along the ground?