Assume the first equation using a slack variable is 3x1−x2+s1=150. What is the second equation after the slack variable is introduced?

Can any one me with the answers to these questions asap?

Can someone check if i did this correct. it’s number 4 if you’re wondering.

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.