Aplayground is being designed where children can interact with their friends in certain combinations.

if there is 1 child, there can be 0 interactions.
if there are 2 children, there can be only 1 interaction.
if there are 3 children, there can be 5 interactions.
if there are 4 children, there can be 14 interactions.

which recursive equation represents the pattern?

an = an - 1 + 2(n - 1)

an = an - 1 + (n - 1) 2

an = an - 1 + 2(n - 1)

an = an - 1 + (2n - 1)

b. ol

step-by-step explanation:

i got the answer right on edg.

congruent: (geometry) (of figures) identical in form; coinciding exactly when superimposed.

step-by-step explanation:

one day the were 5 ducks, and their king told them to multiply their kingdom. so each went their own seperate way and met 4 other ducks on their journey.

when the ducks returned to their kingdom, it was discovered that there were 5 groups of 5 ducks. when the kind counted the number of ducks in total (including the ones he sent out earlier) he counted 25.

therefore 5 times 5 is 25.

the end. : )

answer: i ! the answer is   9000 seconds, also d

hope i

-lavira : )