Since she has seven key the probability that the first one will open the door is

if it takes three attempts to open the door,the probability is

if the three attempts would not work
then the probability that the fourth attempt will open the door is

hope this helps
the answer to this is
the two is for the top of the five 2
-3(x - 5) +23
Answer:
a
Step-by-step explanation:
Answer:
110
Step-by-step explanation:
So if add 75 + 35 you will get the number 110
Really hoped this helped
Answer:
The rise over run is -1/2
Step-by-step explanation: