Three freshmen, 3 sophomores, 3 juniors, and 3 seniors are participating on the debate team. The team's captain is randomly sele
2 answers:
Answer:
3/4
Step-by-step explanation:
probability of any event =
3 freshmen + 3 sophomores + 3 juniors + 3 seniors = 12 participants
∴the total number of participants = 12
P(freshman is a captain) =
=
=
P (freshman is not a captain) = 1 -
=
whenever the probability of an event not happening is being calculated, always subtract the possibility of the occurrence of such event from 1
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Answer:
2nd option
Step-by-step explanation:
given an exponential function in the form y = a
to find a and b use the coordinate points it passes through
using (0, 4 ) , then
4 = a [
= 1 ] , that is
a = 4 , so
y = 4
using (2, 100 )
100 = 4b² ( divide both sides by 4 )
25 = b² ( take the square root of both sides )
= b , that is
b = 5
then exponential function is
y = 4 .