Simplification Questions

• Find k, if the line 4x - y = 1 is perpendicular to the line 5x - ky = 2?
• If (8 - 10x) - (13x - 2) = -9, then the value of x is
• If xy = -18 and x2+ y2= 85 , then find the value of (x + y).
• If 2x -3(x + 2) < 5 - 2x < -x + 2, then find the value of x.
• If sec -5π/4 = x, then the value of x is
• If tan(A/2) = x, then the value of x is
• If 2secA - (1 + sinA)/cosA = x, then the value of x is
• Find the sum of interior angles of a dodecagon?
• If 3x - 8(2 - x) = -19, then the value of x is
• If x - y = 6 and xy = 40, then find x2 + y2 ?
• If 2x - 3(2x - 2) > x - 1 < 2 + 2x; then x can take which of the following values?
• What is the value of cosec 120°
• What should be added to 5(2x-y) to obtain 4(2x - 3y) + 5(x + 4y)?
• If 3(2 - 3x) < 2 - 3x ≥ 4x -6; then x can take which of the following values?
• If sec2A + cosec2A = X , then the value of X is
• If (4x - 3) - (2x + 1) = 4, then the value of x is
• Which of the following equations has real and distinct roots?
• For triangle ABC, what would be the equation of median AD if co-ordinates of A, B and C are (-5,4), (-4,0) and (-2,2) respectively?
• The distance between the points (7,7) and (k,-5) is 13. Find k?
• What should be added to 8(3x - 4y) to obtain 18x - 18y?