The order in which the shades are chosen is not important. For example, choosing powder then sky is the same outcome as choosing sky then powder. So we use the combinations formula to solve this question.

Combinations formula:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

In this question:

2 shades from a set of 6. So

$C_{6,2} = \frac{6!}{2!(6-2)!} = 15$

So the correct answer is:

B.) 15

8 0

4 years ago

Find an equation for a line that passes through (-2,3) and (6,-1)

kompoz [17]

Answer:

I think it's y = -1/2x -2

Step-by-step explanation:

use the formula y - y1/ y2- y1= x - x1/x2-x1

5 0

3 years ago

I need to know the answer of this question

Kazeer [188]

O first find the unit rate 15.54 divided by 7 which is 2.22x 15=$33.30

4 0

3 years ago

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