Answer:
30/100
Step-by-step explanation:
This should be relatively easy since if the denominator is 100 then x/100 has to = 3/10
Since the denominator 10 has to be 100, you multiply by 10.
3 x 10 = 30
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:
What
Step-by-step explanation:
What language
Is that
We can write it down as:
5 = 2x - 3 / + 3 (both sides)
8 = 2x / : 2 (both sides)
x = 4
Bob has 4 CDs. Let's check it:
5 = 2 * 4 - 3
5 = 8 - 3
5 = 5
Correct.
