Twenty different books are to be put on five book shelves, each of which holds at least twenty books.

1 answer:

8 0

Hello There!

The total number of different arrangements is 10,628.

Hope This Helps You!
Good Luck :)

- Hannah ❤

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Alenkasestr [34]

Step-by-step explanation:

u.v=|u||v|cos60°

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u.v=(8)(1/2)

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3 years ago

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tiny-mole [99]

The formula for an infinite geometric sequence is the following:

$S_{∞}= \frac{a_{1}}{1-r}$

Just substitute the values of $a_{1}$ and r into the formula.

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3 years ago

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3 years ago

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Serjik [45]

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Step-by-step explanation: