Anwser:21
Hey homie I just gonna say good luck on this answer and have an amazing day!
Answer:
87
Step-by-step explanation:
you already had it picked :) you got this :D
If I’m not mistaken I think this is what you’re asking for?
BC it’s the same which
Means congruent it’s just on the other side
Find how many half lives have passed
seems we are measuring in days
half life formula is as follows
A=final amount
P=initial amount
t=time in a certain units (this time, it's days)
h=time of half life
so
we are given that P=1, A=0.6, t=3
find h
subsitute
take ln of both sides
multiply both sides by h
divide both sides by ln(0.6)
use your calculator
h≈4.07075
so about 4 days is the half life