Answer:
x = 0, y = 13/4
Step-by-step explanation:
I used elimination to solve the system of equations, but it might be easier to use substitution.
Anyway, hope this helps.
Answer:
4
Step-by-step explanation:
Answer:

And using the cdf we got:

Step-by-step explanation:
Previous concepts
The exponential distribution is "the probability distribution of the time between events in a Poisson process (a process in which events occur continuously and independently at a constant average rate). It is a particular case of the gamma distribution". The probability density function is given by:

And 0 for other case. Let X the random variable that represent the random variable of interest and we know that the distribution is given by:

We know the variance on this case given by :

So then the deviation is given by:

And if we solve for
we got:

The cumulative distribution function for the exponential distribution is given by:

Solution to the problem
And for this case we want to find this probability:

And using the cdf we got:

Answer: They sold 68 tickets at the door
688-920= -2x= -232
2x=232/2=116
184-116=68
Answer:
Your input -2.9,-5.0,-7.1,-9.2,-11.3,-13.4,-15.5,-17.6 appears to be an arithmetic sequence
Step-by-step explanation: