There is a rumor that daddy warbucks is starting a new airline. he plans to serve six cities: san francisco, los angeles, dallas, chicago, new york, and miami. there will be direct flights between each pair of cities. how many different routes will this create?

 15

Step-by-step explanation:

The number of combinations of n things where r things taken at a time is given by :-

Given : Total number of places (San Francisco, Los Angeles, Dallas, Chicago, New York, and Miami.)= 6

Then , the number of possible pairs of any two city will be :-

Hence, the number of different routes will this create = 15

1 is c

2 is a

3 is a

step-by-step explanation:

1.3

step-by-step explanation:

3x2=6   9x+6

bring down the 6 on both sides

6+6=12

12= 9x

divide by 9

12/9 =

1.3 =x