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irga5000 [103]
3 years ago
9

List all the ways to select two members from S with repetition. The order in which the members are selected is not important. Fo

r example, DD is allowed and BA is the same selection as AB.
S = (K,L,M,N,P)
Identify the list of all the ways to select two members from S, allowing for repetition.
Mathematics
1 answer:
Taya2010 [7]3 years ago
4 0

9514 1404 393

Answer:

  KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP

Step-by-step explanation:

Instead of starting with adjacent letters in the list, we start with the same letter. There are 15 possible pairs.

  KK KL KM KN KP LL LM LN LP MM MN MP NN NP PP

__

<em>Additional comment</em>

We leave out pairs with letters previous, because you've said KL is the same as LK, and KL has already been listed. The problem with this list is that it misstates the probabilities of randomly obtaining a given pair. It is not 1/15, but is 2/25 for all but letter duplicates. For duplicates (KK), the probability is 1/25, not 1/15.

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F(x) = x + 4 and g(x) = 2x + 3, evaluate each expression.
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Answer:

15.~f(g(2))=\Large\boxed{11}\\

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17.~g(f(-5))=\Large\boxed{1}

18.~f(g(-5))=\Large\boxed{-3}

Step-by-step explanation:

<h3>Given information</h3>

f(x)=x+4

g(x)=2x+3

<h3>Question 15. f(g(2))</h3>

<u>Substitute values into the first function</u>

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g(2)=4+3

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<u>Substitute the values of the first function into the second</u>

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<h3>Question 16. g(f(2.5))</h3>

<u>Substitute values into the first function</u>

f(2.5)=(2.5)+4

f(2.5)=6.5

<u />

<u>Substitute the values of the first function into the second</u>

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<h3>Question 17. g(f(-5))</h3>

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<h3>Question 18. f(g(-5))</h3>

<u>Substitute values into the first function</u>

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<u>Substitute the values of the first function into the second</u>

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Hope this helps!! :)

Please let me know if you have any questions

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