Answer:
Ending Amount = beginning amount / 2^n where "n" is the number of half-lives or elapsed time / half-life
For this problem "n" = 25 / 11 = 2.2727272727
Ending Amount = 60 grams / 2^2.2727272
Ending Amount = 60 / 4.832357534
Ending Amount = 12.4162998242 grams
Source: www.1728.org/halflife.htm
Step-by-step explanation:
= -y^3 + 4y^2 - 7y^3
= -8y^3 + 4y^2
answer
-8y^3 + 4y^2
Answer:
Fraction of jokes of Brandon that are funny = 
Step-by-step explanation:
We are given that, 30% of the Brandon's jokes are funny.
Now, to convert percent into fraction, we will multiply it by 
Now,

∴
of the Brandon's jokes were funny.