If cos(x) = 3/5 and sin x < 0, find sin(2x) as a fraction in simplest terms

Factor -8x3-2x2-12x-3 by grouping what is the resulting expression?

Apiling for a high-rise building is pushed by two bulldozers at exactly the same time. one bulldozer exerts a force of 1250 pounds in a westerly direction. the other bulldozer pushes the piling with a force of 2650 pounds in a northerly direction. what is the direction of the resulting force upon the piling, to the nearest degree? a. 65 n of w b. 25 n of w c. 45 n of w d. 35 n of w

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.