For this case we have an equation of the form:
y = A * (b) ^ t
Where,
A: initial amount
b: decrease rate
t: time in years.
Substituting values we have:
7 = A * (0.5) ^ ((1/20) * t)
For t = 45 years we have:
7 = A * (0.5) ^ ((1/20) * 45)
Clearing A:
A = 7 / ((0.5) ^ ((1/20) * 45))
A = 33.3
Answer:
the density of the substance when it was deposited 45 years ago was:
A = 33.3 milligrams per square centimeter
Answer:
6.2
Step-by-step explanation:
The lines represent absolute value, all your doing is changing it to a positive number which is 6.2
If the question asked What is the evaluate of I6.2I, the answer would be 6.2, it is always a positive number
Answer:
He can make 11 bags.
Step-by-step explanation:
Every bag holds 1/2 pound.
He has 5 1/2.
He can make 11 bags for his chocolate.
hope this helps.
