If 2x + 3y = 1 and x - 2y = 11, find (x + y)
...If 2x + 3y = 1 and x - 2y = 11, find (x + y)
5
-3
8
2
-2
Correct answer is D
2x + 3y = 1 x 2.......(i) x - 2y = 11 x 3.......(ii) 4x + 6y = 2........(iii) 3x - 6Y = 33........(4) 7x = 35 x = 5 Subt. for x 10 + 3y = 1 3y = -9 y = -3 x + y = 5 + -3 5 - 3 = 2
m:n = \(2\frac{1}{3} : 1\frac{1}{5}\) and n : q = \(1\frac{1}{2} : 1\frac{1}{3}\), find q : m....
Find the value of x if \(\frac{\sqrt{2}}{x + \sqrt{2}}\) = \(\frac{1}{x - \sqrt{2}}\) ...
What are K and L respectively if \(\frac{1}{2}\)(3y - 4x)2 = (8x2 + kxy + Ly2)...
Solve for t in the equation \(\frac{3}{4}t+\frac{1}{3}(21-t)\) = 11,...
In the diagram O is the centre of the circle. Which of the following is/are not true? I. a = b I...