Answer:
Runners that decrease times are not improving
Step-by-step explanation:
Answer:
14,000+2.1%(0.021)x
Step-by-step explanation:
x is how many years
Answer:
84
Step-by-step explanation:
Combinations
nCr
n (objects) = 9
r (sample) = 3
9C3
n! / r! (n – r)!
9! / 3! (9 – 3)!=
9! / (3! * 6!)=
9*8*7*6!/ (3! * 6!)=
6! cancels out
9*8*7/3*2*1=
3*4*7=
12*7=
84
Answer:
a
Step-by-step explanation:
go it right on a mastery test