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3 years ago

7

on what shelf of the school library one half of the books are about sports Josie sees that 3/4 of the sports books are about bas

ketball what fraction of the books on the Shelf are about basketball

1 answer:

Paul [167]3 years ago

8 0

3/8 of the books are basketball books

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Travka [436]

Answer:

$S_5=\dfrac{170}{9}$

Step-by-step explanation:

Given that,

The sum of first n term of a sequence is $S_n=20-\dfrac{10}{2n-1}$

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Put n = 5,

$S_5=20-\dfrac{10}{2(5)-1}\\\\=20-\dfrac{10}{10-1}\\\\=20-\dfrac{10}{9}\\\\=\dfrac{170}{9}$

So, the sum of first 5 terms is equal to $\dfrac{170}{9}$ .

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