For what values of x, the numbers `3/8 ,x, 8/3` are in G.P?

For what values of x, the numbers -2/7 ,x, -7/2 are in G.P.?

For what value of x , the numbers -5/9 , x , 9/5 are in G.P?

For what value of x is the ninth term in the expansion of : {3^(log_3 sqrt(25^(x-1)+7))+3^(-1/8 log_3 (5^(x-1) +1))}^10 is equal to 180.

Determine for which values of x, the following function are increasing or decreasing: f(x) = -3x^2 + 12 x + 8

Find the value of x , if x = -4/3 + 8/7

If x, 2y, 3z are in A.P where distinct numbers x,y,z are in GP then the common ratio of the G.P. is

Given f (x)= {(3x-8, for, xle5), (7, for, x>5):} .What is the value of the function : at x=3 ?

Given f (x)= {(3x-8, for, xle5), (7, for, x>5):} .What is the value of the function : at x=7 ?

Find the value of x such that PQ = QR, where P, Q and R are (6,- 1), (1, 3) and (x, 8) respectively.