Can someone please help me

What value of x is in the solution set of –5x – 15 > 10 + 20x?

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

In each of the cases that follow, the magnitude of a vector is given along with the counterclockwise angle it makes with the +x axis. use trigonometry to find the x and y components of the vector. also, sketch each vector approximately to scale to see if your calculated answers seem reasonable. (a) 50.0 n at 60.0°, (b) 75 m/ s at 5π/ 6 rad, (c) 254 lb at 325°, (d) 69 km at 1.1π rad.