(a) Find `x+y+z` (b) Find `x+y+z+w`

(a) Find x+y+z(b) Find x+y+x+w

if x , y , z , a n d w be the digits of a number beginning from the left , the number is x y z w (b) w z y x (c) x + 10 y + 100 z + 1000 w (d) 10^3x+10^2y+10 z+w

x y : y z : z x = 1 : 5 : 9 Find ( x + y ) : ( y + z ) : ( z + x ) = ?

If w=x+2y+z^(2) and x=cost,y =sint,z =t . Find (dw)/(dt) .

Find the number of solutions of the equation x + y + z = 6, where x, y, z, in W.

If x=c y+b z ,y=a z+c x ,z=x+a y ,w h e r e .x ,y ,z are not all zeros, then find the value of a^2+b^2+c^2+2a b c dot

If x ,\ y , z are not all zero and if a x+b y+c z=0; b x+c y+a z=0; c x+a y+b z=0 Prove that x : y : z=1:1:1\ or\ 1:omega:omega^2or\ 1:omega^2:omegadot

Find x, y, z and w if [[x-y, 2x+z],[2x-y, 3z+w]]=[[-1,5],[0,13]]