The value of x for which the expression 11x + 7 and 17x - 1 become equal is__________
1). -4/3
2). 3/4
3). 4/3
4). -3/4
11x + 7 = 17x - 1
17x – 11x = 7 + 1
6x = 8
x = 4/31. The 2nd and 6th term of an arithmetic progression are 8 and 20 respectively. What is the 20th term?
2. If $9^{x+2}=240+9^{x}$, the value of $(8x)^{x}$ is
3. If -4 is a root of x2 – 2x + k = 0, what is the value of k?
9. A unique circle can always be drawn through x number of given non-collinear points, then x must be :