What is the value of x in the equation x - y = 30, when y = 15?

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !

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.