Answer:
c
Step-by-step explanation:
you divide each side by four to get a=2.5 b=2.5 and c=3
I got -19/655 and i know for sure this isnt the correct answer.
Are you sure this question is correct? It would be a decimal of 34.5 girls
7978 years
Step-by-step explanation:
A = A02^(-t/hl)
where hl = half-life.
Dividing both sides by A0 and taking the logarithm, we get
ln(A/A0) = -(t/hl)ln2
or solving for t,
t= -(hl)ln(A/A0)/ln2
note that A/A0 = 0.38
t = -(5715 yrs)[ln(0.38)/ln2]
= 7978 years
Answer:
<h2>
<em>−2.832</em></h2>
I hope this helps you! :)
