Triangle R S T is shown. The length of R S is 9, the length of S T is 8, and the length of R T is s. Angle R S T is 111 degrees.
Law of cosines: a2 = b2 + c2 – 2bccos(A)

What is the value of s to the nearest whole number?

10
12
13
14

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

Factor the trinomial below. 12x^2 - 32x - 12 a. 4(3x+3)(x-1) b. 4(3x+1)(x-3) c. 4(3x+6)(x-2) d. 4(3x+2)(x-6)

The serenity and the mystic are sail boats. the serenity and the mystic start at the same point and travel away from each other in opposite directions. the serenity travels at 16 mph and the mystic travels at 19 mph. how far apart will they be in 3 hours?