This could be rephrased as:
You start with 100 grams of a substance. One year later you have 70 grams. What is the half-life?
We need this formula:
half-life = (time * natural log (2)) / natural log (beginning amount / ending amt)
half-life = (1 year * .69315) / natural log (100 / 70)
half-life = (.69315) / 0.35667494396
half-life = 1.9433661145 years
Rounding to nearest year half-life = 2 years
Sourse: https://www.1728.org/halflif2.htm
(See problem 3)
Exactly 1 triangle can only be formed within another triangle.
Answer:
-0.75
Step-by-step explanation:
Answer: The answer would be D
:D
Step-by-step explanation:
Answer:
Step-by-step explanation:
<u>Solve the equation:</u>
- 12/x = 80/100
- 12/x = 4/5
- x = 12*5/4
- x = 15