--First we have to simplfy


--Cancel common factors

--Here remember never cancel factors in a subtraction or addition problem
--Now Multiply each side until both denominators are equal to each other
![\frac{2[x(x+1)]}{x(x+3)(x+1)} -\frac{(x-3)(x+3)}{x(x+3)(x+1)}](https://tex.z-dn.net/?f=%5Cfrac%7B2%5Bx%28x%2B1%29%5D%7D%7Bx%28x%2B3%29%28x%2B1%29%7D%20-%5Cfrac%7B%28x-3%29%28x%2B3%29%7D%7Bx%28x%2B3%29%28x%2B1%29%7D)
--Simplify

--Now that the denominators are the same: subtract!


--And LAST STEP! ......Simplify More.... To get your answer

Answer:
12 just because I need the free credit things sorry this ain't gonna be helpful lol
Answer:
a) 5/8
b)6/7
Step-by-step explanation:
The Poisson distribution with a mean of 6.0 is an appropriate model.
<h3>What is mean?</h3>
- In mathematics and statistics, the concept of mean is crucial. The most typical or average value among a group of numbers is called the mean.
- It is a statistical measure of a probability distribution's central tendency along the median and mode. It also goes by the name "expected value."
- There are different ways of measuring the central tendency of a set of values. There are multiple ways to calculate the mean. Here are the two most popular ones:
- Arithmetic mean is the total of the sum of all values in a collection of numbers divided by the number of numbers in a collection.
Hence, The Poisson distribution with a mean of 6.0 is an appropriate model.
learn more about mean click here:
brainly.com/question/1136789
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