Why is the C 14 year assay achieved in 50,000 years? How to figure it out

Every 5,700 years, the original C-14 decreases by half. If we start with 100 C-14s, after 5700 years, there will be 50 left, and those 50 will be the next one, so in another 5700 years, there will be only 25 left. In another 5700 years , there will be only 12 · 5 left, and another half-life , only 6 · 25 .

and so on , after five half-lives , there are 3 · 125 left , 1 · 6 after six half-lives , 0 · 8 after seven , 0 · 4 after eight , 0 · 2 after nine , After ten half-lives (i.e. 10x5700 years = 57,000 years), there is only 0 · 1 pc! If there were 1,000 C-14s at the beginning, there would only be one C-14 left after more than 50,000 years!

It is calculated from the half-life of c.

Interest is calculated on a one-year basis, followed by a pro-rata rate for 300 days.

It seems to have to be calculated at the monthly interest rate.

According to the situation you mentioned, for example, a loan of 300,000 yuan, with an annual interest rate of 6%, the monthly repayment amount will be repaid in 4 years, and the monthly repayment amount will be repaid in 5 years. The loan is 500,000 yuan, and the monthly repayment amount will be repaid in 4 years, and the monthly repayment amount will be repaid in 5 years.

In fact, the monthly repayment amount of the loan can be solved by the PMT function in Excel, and the corresponding method of using the column formula of the PMT function in Excel is as follows: =PMT (loan annual interest rate 12, term * 12, payment amount, 1). Note:

Since the loan interest rate given by the bank is the annualized interest rate, the so-called annualized interest rate is the actual interest rate for a certain period of time into a one-year interest rate, and the bank's method of calculating the interest is calculated by the monthly double, so the loan interest rate in the above function needs to be divided by 12, and because the loan is generally paid once a month, the term * 12 in the function represents how many times you need to repay in total.

We hope you find the following information helpful:

Interest is the fee for the use of money for a certain period of time, and refers to the remuneration received by the holder of the currency (creditor) from the borrower (debtor) for lending money or monetary capital. This includes interest on deposits, loans, and interest on various bonds. Under capitalism, the source of interest is the surplus value created by wage workers.

The essence of interest is a special form of transformation of surplus value, which is part of the profit.

Definition: 1. Money other than the principal obtained from deposits and loans (distinguished)'Principal')。

2. Interest (interest) abstractly refers to the value-added amount brought by the injection and return of monetary funds to the real economic sector. Interest is less abstract and generally refers to the remuneration paid by the borrower (debtor) to the lender (creditor) for the use of borrowed money or capital. Also known as sub-gold, the symmetry of the mother gold (principal).

The formula for calculating interest is: interest = principal interest rate deposit term (i.e. time).

Interest is the remuneration received by the owner of the fund for lending the money, which comes from the part of the profit generated by the producer using the money to perform the operating function. It refers to the value-added amount brought by the injection and return of monetary funds to the real economic sector, and its calculation formula is: interest = principal interest rate deposit period x 100%.

3. Classification of bank interest.

According to the nature of the bank's business, it can be divided into two types: bank interest receivable and bank interest payable.

Interest receivable refers to the remuneration that the bank receives from the borrower for lending funds to the borrower; It is the price that the borrower must pay to use the money; It is also a part of the bank's profits. Interest payable refers to the remuneration paid by the bank to the depositor for absorbing the deposit; It is the price that the bank has to pay to absorb the deposit and is part of the bank's cost.

Interest is calculated on a daily basis, with interest at 5/10,000 per day. You withdraw 50,000 yuan in cash, and you need to pay 25 yuan in interest every day. The principal and interest will be settled when you go to the counter to repay the loan. Good luck!

If you can't withdraw cash until you have to, the interest is rollover, and the interest is several times the interest of the loan, which belongs to usury. Generally, credit card cash withdrawals can take up to half of the credit card limit, and some banks can only go to 30%, which depends on the limit of your card. Interest 5/10,000 a day, cumulative settlement.

For example, if you withdraw 10,000 yuan in interest, the first month is 150, and then the next month will charge you interest according to 10150, so be cautious.

The card of the Bank of Communications has a maximum limit of 50,000 yuan, and you can withdraw 25,000 in cash, 5/10,000 per day, 25 yuan per day, and the interest will be about 15,000 when it expires.

How do you take it out, up to 2000 per dayHow many days you get it, even if it's 2000 per day20 per transaction, plus interest, compound interest! You've got it back!

Whether you accrue interest with compound interest or with simple interest.

Compound interest 60,000x (1 + yuan, *20 means 20 power.)

Simple interest is 60,000x (1 + yuan.)

If your interest is calculated according to compound interest, then you can basically pay it, if it is based on simple interest, then the interest is not much.

It depends on whether you have simple interest or compound interest.

Hello: a+b-c) 5(a-b-c) 2(c-a-b) 4(c+b-a) 3

a+b-c)^5(c+b-a)^2(a+b-c)^4(c+b-a)^3

a+b-c)^9( c+b-a)^5

If you have other questions, click to ask me for help after this question, it is not easy to answer the question, please understand, thank you.

I wish you good luck in learning!

c(n,m)=n!/[n-m)！·m！]

You can substitute this formula and you can forget it.

It means factorial, e.g. n!That is, n multiplied by (n-1) multiplied by (n-2) until 1 and 0 is specified! =1 look.

What are you, is it a function call or something.

Just this line of **, how to look at it. Please give all**.