solving for x in equations

Question 1 - Question: Which of the following equations have x=2, y=3 as solution ? (a) 8x-y = 12 (b) 2x+3y = 10 Answer: (a) Substitute x=2, y=3 in 8x-y=12 8(2)-3=12 16-3=12 x=2, y=3 is not a solution of 8x-y=12 (b) Sub..

Solved Examples - At a point 50 m from the foot of a building, the angle of elevation of the top of the building is 70 o 36 ' . Find the height of the building. BC is the building. A is the observer. AC is its distance of the building from the observer. is the angle of elevatio..

Solve the equation | x | = 5. => 5 , - 5 or - 5 , - 5 or 5 , 5 or 5 , 0..

Solve the equation | x | = 0. => No solution or 1 or 0 or None of the above..

Solve the equation | x | = - 3. => No solution or - 3 or - 3 , 3 or 3..

Solve the equation | x | = 0.485. => 0.485, 0.485 or - 0.485, - 0.485 or 0.485, - 0.485 or None of the above..

Solve the equation. | x | = - 2 => - 2 or 2 or no solution or - 2 , 2..

Solve equation, cos x = 0.39. => x = 2 n π ± 0.3724π, n = 0, ± 1, ± 2, . . . or x = n π ± 0.3724π, n = 0, ± 1, ± 2, . . . or x = 2π ± 0.3724π, n = 0, ± 1, ± 2..

Solve the equation. | x | = 5 => 5, - 5 or 5 or 5, 0 or - 5..

Solve the equation 3 - 2 x = -1. => 4 or 6 or 2 or 5..