Jenny White is shopping for CDs. She decides to purchase 2 movie soundtracks. The music store has 8 different movie soundtracks in stock. How many different selections of movie soundtracks are possible?

28 ways

Step-by-step explanation:

we know that

Combinations are a way to calculate the total outcomes of an event where order of the outcomes does not matter.

To calculate combinations, we will use the formula

where

n represents the total number of items

r represents the number of items being chosen at a time.

In this problem

substitute

simplify

3+x

step-by-step explanation:

38.6°

step-by-step explanation:

resultant is 10 pound

smaller force = 8 pound

angle formed = tan⁻¹(

                        =tan⁻¹(

                          =tan⁻¹(0.8)

                        =38.6°