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Thursday, May 25, 2006

LAST SCRIBE OF THE CYCLE

Today we had one class for today. We started off by writting down notes in our Math Dictionaries.

The Compound Interest Formula


A is the amount at theend of the interest period.

P (A.K.A. Ao) is the principle amount originally invested.

r is the percent rate of return. Written as a decimal.

n is the number of times the principle is compounded each year.

t is the time in years.

Interest Compounded Countinuously


A is the amount at the end of the investment period.

P is the principle amount originally invested.

r is the percent rate of return. Written as a decimal.

t is the time in years.

That was all the notes we had written down. Next, he wrote down some examples then problems.

Examples

C14 has a half life of 5700 years.

Some bones that have been found only have 10% of C14 that they should have. How old are the bones?


A colony of wasps has 800 members. Every 8 days the colony triples in size. How many wasps will there be in the colony in 3 weeks?



There will be 14306.

Solve

Radon has a half life of 3.8 days. How much of a 5g sample will remain after 4.2 days?



The population of a colony of pre-cal 40s students grew from 3x105 to 4x105 during the period between noon and 2pm.At what time will the population be at 6x105?



Well that's all that we did for class today. Now the next scribe will be . . . . . . . ABRIEL muahahahhahahahahah ;D

DON'T FORGET TO DO YOUR HOMEWORK. . PAGE 82 #24-29

thats all folks




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2 Comments:

At 5/29/2006 12:33 PM, Anonymous Anonymous said...

Looks like you lost a t there in the first three lines of the last equation that you solved. Do you know how to edit that in? :)

 
At 5/31/2006 9:17 AM, Blogger Mr. Kuropatwa said...

Jan that last comment was a good one. So is this Scribe Post. Fix that up and then I can induct you into the Scribe Post Hall Of Fame!

 

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