27*" If "1+4+7+10+...+x=287," find the value of "x

Find the value of 7 1/2=4/x

If 2 : 9 :: x : 27 , find the value of x.

Q.7: Find the value of x: x/2+x/4=1

If x ne 0 and 3x +(1)/(3x)= 8, find the value of :27 x^(3) + ( 1)/(27x^(3))

If 3x-7y=10\ and x y=-1, find the value of 9x^2+49 y^2

1 + 4 + 7 + 10 + … + x = 590, then the value of x is

If different values of variable x are 9.8, 5.4 , 3.7 , 1.7 , 1.8 , 2.6 , 2.8 , 10.5 and 11.1 , find the value of sum(x - barx)

If ^(10)C_(x)=^(10)C_(x+4), find the value of x

If 3 xx27^x = 9^(x+4) , then find the value of x?