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Lostsunrise [7]
3 years ago
12

Which equations are equal to this equation? Select all that apply.

Mathematics
2 answers:
o-na [289]3 years ago
8 0
One if them equals b and the other one is c
Andrews [41]3 years ago
5 0

Answer:

The answer is A and D because after I took the test it showed me that I got it right. Answer: A. 56 + 8x = 80. D. 2x = 6.

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Step-by-step explanation:

<u>Solving</u>

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In how many ways can a committee of 5 people be chosen from a total of 30 possible people?
Stolb23 [73]

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Step-by-step explanation:

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The number of people need to be chosen =5

Since , here order doesn't matter, so we use combination.

The combination of r things taking from n at a time is given by :-

C(n,r)=\dfrac{n!}{(n-r)!r!}

Now, the number of possible combinations of 5 people be chosen from a total of 30 possible people :-

C(30,5)=\dfrac{30!}{(30-5)!5!}\\\\=\dfrac{30\times29\times28\times27\times26}{120}\\\\=142506

Hence, the committee can be made in 142506 ways.

3 0
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