A fluid ounce is a customary unit for measuring liquid capacity.
Answer:
The half-life of the radioactive substance is of 3.25 days.
Step-by-step explanation:
The amount of radioactive substance is proportional to the number of counts per minute:
This means that the amount is given by the following differential equation:

In which k is the decay rate.
The solution is:

In which Q(0) is the initial amount:
8000 counts per minute on a Geiger counter at a certain time
This means that 
500 counts per minute 13 days later.
This means that
. We use this to find k.







So

Determine the half-life of the radioactive substance.
This is t for which Q(t) = 0.5Q(0). So







The half-life of the radioactive substance is of 3.25 days.
The correct algebraic expression will be the area of Alaska's Wrangell St Elias minus Gates park so the expression is:
Answer:
<u>Part 1:</u> Find (f/g)(4) = 3
<u>Part 2:</u> Find (f+g)(4) = 28
Step-by-step explanation:
<u>Part 1:</u> Find (f/g)(4):
(f/g)(4) means <em>divide f function by g function and simplify it. Then plug in 4 into x of that simplified function.</em>
Let's do this:

Plugging in 4 into x gives us:

The answer is 3
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<u>Part 2:</u> Find (f+g)(4):
(f+g)(4) <em>means add f function and g function and simplify it. Then plug in 4 into x of that simplified function.</em>
Let's do this:

Plugging in 4 into x gives us:

The answer is 28
Answer:
$6.66 and $7.04
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