15 women are trying out for parts in a production of snow white in how many ways can three different women be selected to play snow white her evil stepmother and wicked witch

455 possible ways

Step-by-step explanation:

We are told that 15 women are trying out for parts in a production of snow white.

Now, we want to find the number of ways that 3 women can be selected to play.

This is simply a combination question.

Thus;

Number of ways = C(15, 3) = 15!/((15 - 3)!(3!) = 15!/(12! × 3!) = (15 × 14 × 13 × 12!)(12! × 3 × 2 × 1)

12! will cancel out to give;

(15 × 14 × 13)/6 = 455

answer:

the position of equilibrium will shift to the left.

step-by-step explanation:

the general equation for the dissociation of a weak base is

b + h₂o   ⇌   bh⁺ + oh⁻

according to le châtelier's principle, when a stress is applied to a system at equilibrium, the system will respond in a way that tends to relieve the stress.

if you apply a stress by adding more bh⁺ or oh⁻,   the system will respond by moving in a direction that gets rid of the added ions.

the position of equilibrium will shift to the left, forming more of the undissociated base.

it is a. 4.2 because 7.6-3.4 gets the remaining length of 4.2. i might be wrong but i am pretty sure this is the answer.