Answer: 0.0081
Step-by-step explanation:
Let X be the number of rafts.
Given : The mean number of rafts floating :
rafts per day .
Then , for 7 days the number of rafts =
rafts per day .
The formula to calculate the Poisson distribution is given by :_

Now, the probability that they will have to wait more than a week is given by :-

Hence, the required probability : 0.0081
137 1/4 sq ft or the measurement
Answer:
18>f>-9
Step-by-step explanation:
it's hard to explanation
For this case we have the following equations:
y = 60x + 40
y = 50x + 80
Equaling both equations we have:
60x + 40 = 50x + 80
From here, we clear the value of x:
60x - 50x = 80 - 40
10x = 40
x = 40/10
x = 4 weeks
Substituting x = 4 in any of the equations we have:
y = 60 (4) + 40
y = 240 + 40
y = 280 $
Answer:
$ 280 4 weeks