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>
Where it was headquarted you ask? it was in Kamakura
Hello :)
A chocolate bar tbh, probably more if we’re being honest.
EMI = $658.69
<u>Explanation:</u>
Amount of money, Principal P = $131,040
Time, n = 15 year , n = 180 months
Rate of interest, R = 6% per annum = 0.5% per month
Amount per month, EMI = ?
We know,
EMI = [ P X R X (1 + R)ⁿ] / [(1 + R)ⁿ⁻¹]
EMI = [131040 X 0.005 X (1+0.005)¹⁸⁰ ] / [(1+0.005)¹⁸⁰⁻¹
EMI = [655.2 X 2.454] / 2.441
EMI = $658.69
Therefore, EMI = $658.69