Answer:
9
Step-by-step explanation:
equation: QRI+IRS=QRS
calculate it and you get x=9
Answer:
you have to find the smallest common denominator
Step-by-step explanation:
so once the fractions have the same denominator you can add them easily and simplify
Answer:
0.5 or 50%
Step-by-step explanation:
For any given value of 'x' representing the time between arrivals of two customers. If 0 < x <120, then the cumulative distribution function is:

Therefore, the probability that the time between the arrivals of two customers will be more than 60 seconds is determined by:

The probability is 0.5 or 50%.
Answer:
57 seconds
Step-by-step explanation:
55.7 + 1.3 = 57 seconds