1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Georgia [21]
3 years ago
14

A fossilized leaf contains 8% of its normal amount of carbon 14. How old is the fossil (to the nearest year)? Use 5600 years as

the half-life of carbon 14.
Mathematics
1 answer:
Setler [38]3 years ago
6 0
Elapsed time = half-life * log(beginning amount / ending amount) / log (2)
elapsed time = 5,600 * log (100 / 8) / log (2)
elapsed time = 5,600 * log (12.5) / log (2)
elapsed time = 5,600 * (1.096910013 / 0.30102999566)
elapsed time = 5,600 * <span> <span> <span> 3.6438561898 </span> </span> </span>
elapsed time = <span> <span> <span> 20,405.5946628585 </span>
</span></span><span><span>elapsed time = 20,406 (to nearest year)
</span> </span>
Source:
http://www.1728.org/halflife.htm


You might be interested in
Jesse borrowed $350 from his mom to buy an electric scooter, Jesse will pay her
mash [69]

Answer:

the answer is C

350×3% =10.5

ans×5=21

6 0
3 years ago
Read 2 more answers
How to solve 2a x a x a x3a + b +4b
kodGreya [7K]

Answer:

6 {a}^{4}  + 5b

Step-by-step explanation:

2a \times  a\times a \times 3 a+ b + 4b \\ 2a \times a = 2 {a}^{2}  \\ 2 {a}^{2}  \times a = 2 {a}^{3}  \\ 2 {a}^{3}  \times 3a = 6 {a}^{4}  \\b +  4b = 5b

Therefore the answer is

6 {a}^{4}  + 5b

3 0
2 years ago
Read 2 more answers
gas prices decreased this week from $4 per gallon to 3.80 dollars per gallon what is the percent decrease​
evablogger [386]

Answer: 5%

Is the percentage

5 0
3 years ago
Read 2 more answers
If f(x)= x-3 over x and g(x)= 5x-4 what is the domain of (f•g)(x)
marusya05 [52]

Answer:

I attached the work to your problem below.

I hope it helps.

8 0
3 years ago
Please help I really need it for a grade boost.
ArbitrLikvidat [17]

Answer:

I hope This will Help u.. Plz mark me as Brilliant please

Step-by-step explanation:

Before you get started, take this readiness quiz.

Simplify: 

If you missed this problem, review (Figure).

Solve Equations with Constants on Both Sides

In all the equations we have solved so far, all the variable terms were on only one side of the equation with the constants on the other side. This does not happen all the time—so now we will learn to solve equations in which the variable terms, or constant terms, or both are on both sides of the equation.

Our strategy will involve choosing one side of the equation to be the “variable side”, and the other side of the equation to be the “constant side.” Then, we will use the Subtraction and Addition Properties of Equality to get all the variable terms together on one side of the equation and the constant terms together on the other side.

By doing this, we will transform the equation that began with variables and constants on both sides into the form  We already know how to solve equations of this form by using the Division or Multiplication Properties of Equality.

Solve: 

Solution

In this equation, the variable is found only on the left side. It makes sense to call the left side the “variable” side. Therefore, the right side will be the “constant” side. We will write the labels above the equation to help us remember what goes where.



Since the left side is the “”, or variable side, the 8 is out of place. We must “undo” adding 8 by subtracting 8, and to keep the equality we must subtract 8 from both sides.

Use the Subtraction Property of Equality.Simplify.Now all the variables are on the left and the constant on the right.

The equation looks like those you learned to solve earlier.Use the Division Property of Equality.Simplify.Check:Let .

Solve: 



Solve: 



Solve: 

Solution

Notice, the variable is only on the left side of the equation, so we will call this side the “variable” side, and the right side will be the “constant” side. Since the left side is the “variable” side, the 9 is out of place. It is subtracted from the , so to “undo” subtraction, add 9 to both sides. Remember, whatever you do to the left, you must do to the right.

4 0
2 years ago
Read 2 more answers
Other questions:
  • Need help AsAp WIll give brainlist!!!
    9·1 answer
  • If a seed is planted, it has a 75% chance of growing into a healthy plant.
    8·1 answer
  • Determine the gravitational force of attraction between two 3.5 kg bowling balls whose
    5·1 answer
  • Find the volume. cylinder—r = 2 cm; h = 3 cm
    9·1 answer
  • According to records from the last 50 years, there is a 2/3 chance of June temperatures being above 80 F. Azul needs to find the
    13·2 answers
  • 1. Find the slope given the points (-6,7) and (1,8)<br> -1/7<br> 1/7<br> -7/1<br> 7
    5·1 answer
  • Help me please I’m dumb
    8·1 answer
  • Illustrates whather the two ratios are equal or not using cross 3/27, 1/9​
    10·1 answer
  • True or False <br> Stock Prices are easy to predict?
    12·1 answer
  • Plz guys I need help
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!