Asking Again... Jennifer chooses a playing card at random from a deck of 52 cards then she chooses another one. What is the prob
1 answer:
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Answer:
y=2 -7x-4
three linear equations
c=-4 ;4a+b=1 ; 9=a-b
Step-by-step explanation:
Simply assume a standard parabola equation y=a +bx +c
(here a, b, c are three independent variables)
Three coordinates as shown in graph are (0,4), (4,0) ,(-1,5)
Now put these points in the equation of parabola and get three linear equations.
[1] c=-4
[2] 4a+b=1
[3] 9=a-b
Now substitute value of a from equation 2 into 3 in terms of b
a=
9=-b
b=-7
a=2
y=2 -7x-4
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