Answer:
The rock is 3.75 billion years ago.
Explanation:
Given that:
Half life = 1.25 billion years
1 billion years = 10⁹ years
So,
Half life = 1.25 × 10⁹ years

Where, k is rate constant
So,


The rate constant, k = 5.5452 × 10⁻¹⁰ years⁻¹
Initial amount [A₀] = 80 micrograms
Final amount
= 10 micrograms
Using integrated rate law for first order kinetics as:
![[A_t]=[A_0]e^{-kt}](https://tex.z-dn.net/?f=%5BA_t%5D%3D%5BA_0%5De%5E%7B-kt%7D)
So,





So,
<u>The rock is 3.75 billion years ago.</u>
Answer and explanation :
Three reasonable ordering of voice menus are:
Order them alphabetically: Alphabetic ordering is ideal in light of the fact that the client knows about it and can anticipate to what extent it will take to get to their ideal magazine. For instance: Entrepreneur, Fortune, Golf, Leisure, National Geographic, Time, Travel and Leisure, and US News and World Report.
Order the magazines by popularity: This ordering would assist the client with hearing the magazine they like first.
Order the listings by price: Uncommon costs or lower costs are recorded first to persuade the guest to be bound to make a buy. Simply playing with client's brain science.
Answer:
A. both Jonathan's and Joanna's cases
Explanation:
Legal implication: The term "legal implication" is described as a phenomenon that is considered as the consequences or results in which an individual in being involved something inappropriate according to the specific law. Legal implications can either be negative or positive.
Ethical implication: The term "ethical implication" is described as a phenomenon in which various matter is being considered based on an ethical viewpoint. It is considered as the human principle based on wrong and right.
In the question above, the correct answer is A.
Answer:
Be Patient
Explanation: he is a growing boy and is trying to figure out what he wants to do as he grows and matures he will calm down.
Answer:
THE OCEAN REGULATES RAIN AND DROUGHTS WITH HOLDING 97% OF THE WATER OF OUR PLANET, ALMOST ALL RAIN THAT DROPS ON LAND COMES FROM THE OCEAN. THE OCEAN ABSORBS CO2,TO KEEP THE CARBON CYCLE, AND ACCORDINGLY TEMPERATURES ON EARTH,IN BALANCE. IT MAKS THE OCEAN OUR GLOBAL CLIMATE CONTROL SYSTEM.
EXAMPLES OF OCEANS:
◇ THE ATLANTIC OCEAN.
◇ THE INDIAN OCEAN.
◇ THE SOUTHERN OCEAN.
◇ THE ARCTIC OCEAN.
◇ THE PACIFIC OCEAN.
<h3>HOPE IT HELP.....❤❤</h3>