Use a permutation expression to solve. In a race of 43 people, how many different ways can the runners place in 1st, 2nd, and 3rd?

74046

Step-by-step explanation:

Permutations =

where r = choice of things from a set ( in this case the 3 places ) so r = 3

and n = amount of things ( in this case the 43 people ) so n = 43

We then plug in the values of n and r in the permutations formula

Hence the answer is 74046

y=3x+4

step-by-step explanation:

given the points a(0,4) and b(-4, -8)

eqn of line ab: (y-4)/(x-0)=(-8-4)/(-4-0)

(y-4)/x=-12/-4=3

y=3x+4

5

10

15

20

25

30

35

40

45

50

55