Answer:
15
Step-by-step explanation:
x+5/36 = x/27
these are similar triangles
The correct answer is A because the 4 in the X value repeats two time and on the other ones doesn't
All the components in the state vector need to sum to 1. You're given that component corresponding to state 1 is 0.2, and that the component for state 3 is 0.
That leaves states 2 and 4, for which you're told that the component for state 2 is four times as large. If

is the component for state

, then you have

which means

. So the state vector is

.