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
Gwar [14]
1 year ago
10

if an element has a half-life of 20 million years, and there is 6.25% of it remaining in a rock, how old is that rock?

English
1 answer:
Ahat [919]1 year ago
7 0
Working out: 6.25% = 4 half lives (20x4=80ma) 80ma is how old the rock is
You might be interested in
Antonyms: Match the word with the word or phrase most nearly its opposite.
balandron [24]
The word "minutia" comes from the Latin word "minutus" which then became the word "minute" in English. Then in the mid 18th century, it became "minutiae". This word means a minor detail that is often neglected. Therefore, the opposite of the word "minutia" is option A. A significant idea.
7 0
3 years ago
What is the best reference source to find the meaning of the word flume
hram777 [196]

Answer: A dictionary is the best source

Explanation:

4 0
3 years ago
When participating in a group discussion, a good group member maintains a balance between
Kay [80]
All of them are reasonable is there and option for all?
5 0
3 years ago
Read 2 more answers
Rewrite the expression −5(3x−4)+3 using the fewest number of terms possible.
Mariulka [41]

Answer:

-5(3X-4)+3

=-5 x 3x - (-5 x 4)+ 3

= 7x-(-20)+3

=7x+20+3

=7x+23 is the answer

6 0
2 years ago
what is perhaps the most grotesque sign of the desensitization that has taken place in oceania with regard to violence , in syme
r-ruslan [8.4K]
Syme and Winston have a discussion about what Syne is really going after. Syme is very amped up for the possibility of the English dialect being abbreviated into a sincerely void arrangement of word-phrases. Basically there will be no chance to get of communicating the individual self. Everything will be desensitized to its most base vacuous frame. Syme, obviously, is much excessively amped up for this. At the point when Winston takes a gander at Syme he sees a "dead man"
4 0
3 years ago
Other questions:
  • Which of the following excerpts from the passage above illustrates external conflict?
    12·1 answer
  • combine the following sentence into one independent clause. "some of these factors have been torn down.some of them have been co
    14·2 answers
  • Which blog statement is an example of a claim?
    8·1 answer
  • A type of nonfiction which explains a particular subject is called _____. description an editorial exposition parenthesis
    6·1 answer
  • Stephanie and Wayne have a marriage full of conflict. What is a likely indirect result of their tumultuous relationship?
    7·2 answers
  • Which piece of textual evidence best supports the inference that the Germans could not lay new cables in the waters of the Engli
    12·2 answers
  • How does the theme that stories can help us understand one another develop in "The Speech"?
    10·1 answer
  • Please would you rather be determined or interested what word is better
    7·2 answers
  • HEADLINE:<br> AUTHOR:<br> DATE PUBLISHED:
    9·1 answer
  • III. IDENTIFY THE TYPE OF RETHORICAL APPEAL USED IN THE STATEMENTS. Write your answer on the space provided.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!