Answer:
148
Step-by-step explanation:
Average = sum of numbers /total numbers
let x = 5th number
123.2 = (118+ 128 + 124,+ 98 + x) / 5
123.2 = (468 + x) / 5
Multiply both sides by 5
616 = 468 + x
x = 148
Answer:
c) Either A or B or both occur.
Step-by-step explanation:
Suppose that we have two events
Event A
Event B
We have that:

In which a a happens and b does not and
is the probability that aboth events happen
By the same logic, we have that:

The union of events A and B is:

Which includes either one of them or both.
So the correct answer is:
c) Either A or B or both occur.
Answer:
x =5
Step-by-step explanation: