Find the value of x

`0.9 : 0.6 :: x : 3`

Find the value of x if 6:9=x:6

Find the value of 9/2x-4/3=0

find the value of x - 3x-5=0

Find the value of (0.9)^2 - ( 0.6 )^2 is

if x+9=0 the value of x is

Find the value of (( x -y )^3 + ( y - z )^3 + ( z - x )^3 )/ (9 ( x - y )( y - z ) ( z - x )) 1 . 0 2 . 1/9 3 . 1/3 4. 1

Find the value of 5x^2-3x+7 at x=0

Find the value of x: 0.5x-(0.8-0.2x) = 0.2-0.3x

Find the value of x: 0.5x-(0.8-0.2x) = 0.2-0.3x

(a) Find the value of x if 1 + 6 + 11 + ... + x = 189. (b) Find the value of x if 3 + 6 + 9 + ... + 96 = x.