Answer: A.
Step-by-step explanation:
Given:
The two statements.
To find:
The probability of an impossible event.
The probability of a certain event.
Solution:
Formula for probability is:

For an impossible event, the possible favorable outcomes is 0. So,


For a certain event (sure event), the possible favorable outcomes is equal to total number of outcomes. So,


Therefore, an event that is impossible has probability 0 and an event that is certain has probability 1.
Answer:a=70
c=110
b=110
Step-by-step explanation:
The solution is in the attached file filatache
1-(-4)^2
1-(-4 times -4)
1-(16)
1-16
-15
13, start with 24, right? 24 plus 6 is 30. 30 minus 12 is 18. 18 minus 5 is 13.