Which equation has only one solution?
-5-1
1-6 - 2x1 = 8
15x + 10 = 10
|-6x + 3 = 0

Two fire-lookout stations are 190 miles apart, with station a directly south of station b. both stations spot a fire. the bearing of the fire from station a is upper n 55 degrees upper e and the bearing of the fire from station b is upper s 60 degrees e. how far, to the nearest tenth of a mile, is the fire from each lookout station?

Solve |2x - 5| = 4 if anyone could , that would be great

Solve the given system of equations. 2y= -x+9 , 3x-6= -15