Answer:
- <u>59.0891 g (rounded to 4 decimal places)</u>
Explanation:
<em>Half-life time</em> of a radioactive substance is the time for half of the substance to decay.
Thus, the amount of the radioactive substance that remains after a number n of half-lives is given by:
Where:
- A is the amount that remains of the substance after n half-lives have elapses, and
- A₀ is the starting amount of the substance.
In this problem, you have that the half-live for your sample (polonium-210) is 138 days and the number of days elapsed is 330 days. Thus, the number of half-lives elapsed is:
- 330 days / 138 days = 2.3913
Therefore, the amount of polonium-210 that will be left in 330 days is:
<h2>
Hello!</h2>
The answer is: the price of 5 pints of tomato sauce is $2.25.
<h2>
Why?</h2>
To calculate how much does it cost 5 pints, we need to perform a unit conversion with the following unit relationship:
Now, calculating how much is a pint:
A pint is $0.45.
Then, calculating how much are 5 pints:
Hence, the price of 5 pints of tomato sauce is $2.25.
Have a nice day!
Answer:
thats too long to read but good luck!
Step-by-step explanation:
D. <span>4(x) represents the total length of all four coffee table legs.</span>
Answer:
There are 24 different trip possibilities.
Step-by-step explanation:
Here the first thing we need to find is all the individual events, such that each event (or selection) will have a given number of options.
The first event is the selection of the location.
Here the options are: Phoenix, Las Vegas, San Diego, or Los Angeles (4 options)
The second event is the selection of how you go there.
The options are flying or driving (2 options)
The third event is the selection of how many days you will stay there. The options are 3 days, 4 days, and 5 days (3 options).
The total number of different trip possibilities is equal to the product between the number of options for each event.
P = 4*2*3 = 24
There are 24 different trip possibilities.
