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GuDViN [60]
3 years ago
14

Find the perimeter of a triangle with sides 2x+ 3,5x+8+x and 7x-2

Mathematics
2 answers:
Alexxx [7]3 years ago
8 0
2x+3+5x+8+x+7x-2=
15x-9

Perimeter= 15x-9

lidiya [134]3 years ago
3 0
To find the perimeter:

First, add all the sides together and find x

2x + 3 + 5x + 8 + x + 7x - 2 = 15x + 9


15x + 9 is your answer (for you cannot simplify it anymore)

hope this helps
 
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Where (nCx) means combinatory and it's given by this formula:

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Step-by-step explanation:

Previous concepts

A Bernoulli trial is "a random experiment with exactly two possible outcomes, "success" and "failure", in which the probability of success is the same every time the experiment is conducted". And this experiment is a particular case of the binomial experiment.

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The probability mass function for the Binomial distribution is given as:  

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Where (nCx) means combinatory and it's given by this formula:  

nCx=\frac{n!}{(n-x)! x!}  

Solution to the problem

We assume that we have a fair coin that is p(Head)=p(Tails)=0.5

For this case we define the random variable X as "number of heads observed in 20 times". The distribution for X is given by:

X \sim Binom(n=20, p=0.5)

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P(X)=(nCx)(p)^x (1-p)^{n-x}

Where (nCx) means combinatory and it's given by this formula:

nCx=\frac{n!}{(n-x)! x!}

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