Answer:
.09
first you have to multiply the denominators together bc they do not match...then fix the numerators by multiplying each one by the other terms denominator...do the same for the second term...now you have new fractions to add...now add them...then if you can reduce the fraction
Step-by-step explanation:
7 is just adding.
8 is counting by odd numbers.
9 is a rotation
Answer:
I need answer choices to help you
Step-by-step explanation:
Answer: The expected waiting time is
Step-by-step explanation:
Since we have given that
Average waiting time for slow elevator = 3 min
Average waiting time for fast elevator = 1 min
probability that a person choose the fast elevator =
Probability that a person choose the slow elevator =
So, the expected waiting time would be
Hence, the expected waiting time is