4 years ago

What is the god of this equation

Mathematics

1 answer:

sergeinik [125]4 years ago

6 0

15x^2y^3 = 3×5×x×x×y×y×y -20x^3yz = -1×4×5×x×x×x×y×z Common : 5×x×x×y Which equals 5x^2y

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Our club has 25 members, and wishes to pick a president, secretary, and treasurer. In how many ways can we choose the officers,

Rus_ich [418]

Answer:

13800

Step-by-step explanation:

The order of the members is important (because each selected member will receive a different position), thus we then need to use the definition of permutation.

There are 25 members, of which 3 are selected.

$\begin{array}{l}n=25 \\r=3\\end{array}$

Evaluate the definition of a combination:

$P(25,3)=\frac{25 !}{(25-3) !}=\frac{25 !}{22 !}=25 \cdot 24 \cdot 23=13800$

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3 years ago

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olga55 [171]

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Andre45 [30]

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3 years ago

Help me, practice questions.

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Marta_Voda [28]

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Step-by-step explanation:

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