Oblicz masę, której 30% jest równe 12 !

Need on this geometry question. explain how you did it.

For what value of (y) is 3^3/3^y =1/9

Which rule describes the composition of transformations that maps ajkl to aj"k"l"? ro. 900 o to, -2(x, y) to, -20 ro, 900(x, y) ro, 9000 t-2. o(x,y) t-2, 00 ro, 900(x, y)