In right triangle ABC shown in the diagram below, altitude BD is drawn to hypotenuse AC, CD = 12, and AD = 3.
A
3
D
12
B
What is the length of AB?
A 53
B 6
C 315
D 9

water molecules will move from the side of higher water concentration to the side of lower concentration until both solutions are isotonic. at this point, equilibrium is reached. in an isotonic solution, the flow of water in and out of the cell is happening at the same rate.

hope this < 3

its kinda hard to answer this when we dont have all the information that we need.