If `a^x=b^y=c^z \ and\ b^2=a c ,\ then\ y` equals a. `(xz)/(x+z)` b. `(x z)/(2(x-z))` c. `(x z)/(2(z-x))` d. `(2x z)/((x+z))`

If a^(x)=b^(y)=c^(z) and b^(2)=ac, then show that y=(2zx)/(z+x)

If a^x = b^y = c^z and b/a = c/b then (2z)/(x + z) is equal to:

if a^(x)=b^(y)=c^(z) and b^(2)= acprove that y=(2xz)/(x+z)

a^(x)=b^(y)=c^(z) and b^(2)=ac then prove that (1)/(x)+(1)/(z)=(2)/(y)

If x + y = 2z then (x)/(x-z) +(z)/(y-z) = ?

A person travels three equal distances at a speed of x km/hr, y km/hr and z knyhr respectively. What is the average speed for the whole journey? (x y z)/(3(x y+y z+z x)) b. (x y z)/((x y+y z+z x)) c. ((x y+y z+z x))/(x y z) d. (3x y z)/((x y+y z+z x))