# Future of libraries

You know that thanks to the Internet, electronic communications and developing online resources on the Internet annually declining number of traditional readership by 17%. These deal is irreversible evolutionary shift from old books from libraries to immediately available and cheaper information from the Internet.

The library had in 1991 3336 readers. Determine the year in which count of readers will be only 289.

The library had in 1991 3336 readers. Determine the year in which count of readers will be only 289.

**Result****Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):**

**Showing 0 comments:**

**Be the first to comment!**

#### To solve this example are needed these knowledge from mathematics:

## Next similar examples:

- A perineum

A perineum string is 10% shorter than its original string. The first string is 24, what is the 9th string or term? - JUDr. Usury

Judge JUDr. Usury approved the agreement on guilt and punishment where confessed to pay daily interest 0.18%. How big is a yearly interest? Year has 360 days. - GP - 8 items

Determine the first eight members of a geometric progression if a_{9}=512, q=2 - Geometric progression 2

There is geometric sequence with a_{1}=5.7 and quotient q=-2.5. Calculate a_{17}. - Theorem prove

We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started? - Tenth member

Calculate the tenth member of geometric sequence when given: a_{1}=1/2 and q=2 - Geometric sequence 4

It is given geometric sequence a_{3}= 7 and a_{12}= 3. Calculate s_{23}(= sum of the first 23 members of the sequence). - Six terms

Find the first six terms of the sequence a1 = -3, an = 2 * an-1 - Five members

Write first 5 members geometric sequence and determine whether it is increasing or decreasing: a_{1}= 3 q = -2 - UV radiation

The glass of 1 mm thickness absorb 4% of UV radiation passing through. How many percent of UV rays absorb glass with a thickness 1.1 cm, made from 1 mm thick those glasses? - Geometric progression

Fill 4 numbers between 4 and -12500 to form geometric progression. - Piano

If Suzan practicing 10 minutes at Monday; every other day she wants to practice 2 times as much as the previous day, how many hours and minutes will have to practice on Friday? - Gain

Find the gain whenever the output power is 21x the input power. - The city

At the end of 2010 the city had 155000 residents. The population increased by 2.1% each year. What is the population at the end of 2013? - Machine

Price of the new machine is € 62000. Every year is depreciated 15% of residual value. What will be the value of the machine after 3 years? - GP members

The geometric sequence has 10 members. The last two members are 2 and -1. Which member is -1/16? - Radioactive material

A radioactive material loses 10% of its mass each year. What proportion will be left there after n=6 years?