Given ABCD, solve for x. B
с
A А
K30+5x)" (15+10x)"
D
A. 13
B. 11
c. 7
D. 9

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.

Which number completes the inequality? 2/3 < _ < 7/9

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol