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
Alex787 [66]
4 years ago
7

The amount of carbon 14 still present is a sample after t years

Mathematics
1 answer:
g100num [7]4 years ago
8 0

Answer:

The age of this sample is 13,417 years.

Step-by-step explanation:

The amount of carbon 14 present in a sample after t years is given by the following equation:

C(t) = C_{0}e^{-0.00012t}

Estimate the age of a sample of wood discoverd by a arecheologist if the carbon level in the sampleis only 20% of it orginal carbon 14 level.

The problem asks us to find the value of t when

C(t) = 0.2C_{0}

So:

C(t) = C_{0}e^{-0.00012t}

0.2C_{0} = C_{0}e^{-0.00012t}

e^{-0.00012t} = \frac{0.2C_{0}}{C_{0}}

e^{-0.00012t} = 0.2

ln e^{-0.00012t} = ln 0.2

-0.00012t = -1.61

0.00012t = 1.61

t = \frac{1.61}{0.00012}

t = 13,416.7

The age of this sample is 13,417 years.

You might be interested in
Your building plan for your restaurant includes one men's and women's restroom. The city inspector lets you kno that you must ha
Ivanshal [37]

Answer: 3200 ft^2

Step-by-step explanation:

You have a total area of 4,000 ft^2.

In your plan, you will make two bathrooms (one men's restroom and one women's restroom)

We know that each one of them needs 400ft^2, then the total area needed is two times 400ft^2, or:

2*400ft^2 = 800ft^2

If we subtract this to the total area, we get:

4000ft^2 - 800ft^2 = 3200 ft^2

That is the square feet left for the development of other nonbathroom areas.

6 0
3 years ago
In your own words, what is a interquartile range?<br> REWARDING BRAINLY
melisa1 [442]

Answer: The range of the medians of the numbers left and right of the median of the entire data set.

3 0
3 years ago
Read 2 more answers
What is the missing term in this geometric table?
Mrac [35]
6
...................
4 0
3 years ago
PLSSSSSS HELP PLS
andreev551 [17]

Answer:

  • <em><u>Given </u></em><em><u>,</u></em>

student's age = x years.

  • <em><u>Also </u></em><em><u>,</u></em>

Teacher's age = 2x + 6

  • <em><u>And </u></em><em><u>,</u></em>

Principal's age = 3x + 10

------------------------------------------

Difference between ages ,

\bold{(3x  +  10) - (2x + 6)} \\\bold{  =  > 3x + 10 - 2x - 6} \\  \bold{=  > x + 4}

therefore ,

second option is the correct answer.

hope helpful ~

5 0
2 years ago
1. Ms. Scott raised $4,763 for the local charity. Find the opposite of this integer.
allochka39001 [22]

Answer:

D

Step-by-step explanation:

Shsgbsbdh

4 0
4 years ago
Other questions:
  • Someone please help me
    14·1 answer
  • Multiply $38.52 by $0.20. How much did you spend?
    12·2 answers
  • Five times the difference of one-half of a number and two
    6·1 answer
  • You have several pieces of bar stock 11 feet long. You need 12 short pieces to complete your installation. How many pieces of ba
    6·1 answer
  • jonna mixed 1/4 gallon of orange juice and 1/2 gallon of pineapple juice to make punch. each serving is 1/16 gallon. how many se
    13·2 answers
  • Hii please help asap ill give brainliest thanks
    7·2 answers
  • Sin(a-30)-sin(a+30)=-coss​
    11·1 answer
  • Pls helps fast the test is due soon!
    13·1 answer
  • Name 5 possible values for x from the inequality 2x ≤ 28
    10·1 answer
  • Find the Interest .The loan will be $25,900 over 5years at 6.25%​
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!