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Tatiana [17]
3 years ago
14

Carbon–14 is a radioactive isotope that decays exponentially at a rate of 0.0124 percent a year. How many years will it take for

carbon–14 to decay to 10 percent of its original amount? The equation for exponential decay is At = A0e–rt.
Mathematics
1 answer:
patriot [66]3 years ago
5 0
100-0.0124=99.9876

10%=1/10
1/10P=P(0.999876)^t
divide both sides by P
1/10=0.999876^t
take ln of both sides
ln(1/10)=t (ln(0.999876))
divide both sides by (ln(0.999876))
ln(1/10)/(ln(0.999876))=t
use calculator
18568.08=t
about 18568 years

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katrin [286]

The solution set for the given inequality is g > -7

<u>Given the following inequality:</u>

  • 4 - 5g > 39

<h3>What is an inequality?</h3>

An inequality can be defined as a mathematical relation that is typically used to compare two (2) integers or variables in an equation by illustrating any of the following:

  • Greater than (>).
  • Less than (<).
  • Greater than or equal to the other (≥).
  • Less than or equal to the other (≤).

Simplifying the inequality, we have:

4 - 5g > 39\\\\5g > 4-39\\\\5g > -35\\\\g > -7

Read more on inequality here: brainly.com/question/24372553

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. Mrs. Bull spilled coffee on her computer during the first week of school! The total cost after tax to repair it is represented
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The adjusted trial balance of Smith Sign Company follows:
Oksana_A [137]

Following are the general entry to the given question:

For Question 1:

Date             Account Titles and Explanation                   Dr              Cr

31-Jan-2024              Revenue Service                      $17,500  

                                   Summary of Income                                    $17,500

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31-Jan-2024     Summary of Income                        $7,100  

                                  Expense of Salary                                     $3,600

                                   Expense on rent                                             $1,800

                        Expense of Depreciation - equipment                   $300

                               Expense on Supplies                                            $400

                                 Expense on Utilities                                           $1,000

                           (To close the expenditure account)  

31-Jan-2024    Summary of Income                           $10,400  

                                Retained Earnings                                    $10,400

                 (To bring net income into line with retained profits)  

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For Question 2:

A net income of $10,400 is generated. They may compute it by subtracting total expenses from the entire revenue.

Total Revenue= $17,500

Total Expenses=$7,100

\text{Net Income= Total Revenue-Total Expenses}

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  • Please find the complete question in the attachment file.

Learn more:

brainly.com/question/14695332

4 0
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posledela

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=28,245.

2.12×12×12+-7×-7×-7+-5×-5×-5

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