Answer:
The probability is 
Step-by-step explanation:
If she has n distinct password candidates and only one of which will successfully log her into a secure system, the probability that her first first successful login will be on her k-th try is:
If k=1

Because, in her first try she has n possibles options and just one give her a successful login.
If k=2

Because, in her first try she has n possibles options and n-1 that are not correct, then, she has n-1 possibles options and 1 of that give her a successful login.
If k=3

Because, in her first try she has n possibles options and n-1 that are not correct, then, she has n-1 possibles options and n-2 that are not correct and after that, she has n-2 possibles options and 1 give her a successful login.
Finally, no matter what is the value of k, the probability that her first successful login will be (exactly) on her k-th try is 1/n
Answer:
nomelase pero será chida la imagen que tienes
Answer:
.00114771
<em>hope this helps, good luck :)</em>
Answer:
24.38 meters to the nearest hundredth.
Step-by-step explanation:
1 foot is approximately 30.48 cm.
So 80 feet = 80 * 30.48 cm.
In meters this is (80 * 30.48) / 100
= 24.38 m.