you have to divide 6 by 15 to get you're answer A)0.4
62.50/5=12.50 for each tour
500/12.50 = 40 tours
Each Sandwich has one fourth pound of ham. 4 divided by 16 equals 1/4
It says only 20 points so I'm not helping
Answer:
a) r=-0.00012097
b)
c) 13,304.65 years
Step-by-step explanation:
a)
Q(t) satisfies the differential equation Q'(t) = rQ(t), hence
Integrating on both sides
where C is a constant. Taking the exponential on both sides
In this case, is the initial value Q(0), the amount of the initial value of carbon-14 and we have
As we know that the half-life of carbon-14 is approximately 5,730 years we have
Taking logarithm on both sides
and
b)
c)
We want to find a value of t for which
Q(t) = 20% of =
and