In paragraph 6, the description of Miss Chevalier is used to emphasize the contrast between her unusual appearance and her congenial personality.
The correct answer is A. Vertical
Vertical relationships are those where one person has greater power over the other person than the other has on the first person. It's between a boss and an employee or between parents and a child. Horizontal is when the two people are equals such as siblings in a family or coworkers in the same sector or similar.
A smart agent is NOT a type of intelligent agent.
<h3>What is a smart agent?</h3>
In artificial intelligence (AI), a smart agent makes reference to a particular entity that enables AI to carry out any type of action.
Conversely, artificial assistants such as Alexa are intelligent because they collect information without any help.
Artificial intelligence assistants are able to learn about the preferences of the individual through his/her actions and act in consequence.
Artificial intelligence assistants perform web search in order to satisfy such preferences and choices, thereby these types of assistants are increasingly being employed in home and work.
In conclusion, a smart agent is NOT a type of intelligent agent.
Learn more about intelligence agents here:
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<h3>
Answer:</h3>
60 days
<h3>
Explanation:</h3>
Half-life is the amount of time it takes half of a substance to decay away.
Guess and Check
One method for solving half-life problems like this is to guess and check. To do this, we can continue to divide 475mg by 2 until we get to 30mg.
- 475 ÷ 2 = 237.5
- 237.5 ÷ 2 = 118.75
- 118.75 ÷ 2 = 59.375
- 59.375 ÷ 2 = 29.6875
As seen here, it takes approximately 4 half-lives for this sample of Ra-225 to decay to 30mg. Now, we can multiply 4 by the length of the half-life, 15 days.
Fractions
Another way to solve this is to use fractions.
- 16 is equivalent to
.
This means that it takes 4 half-lives for 475mg to decay to 30mg. Using the same method above, we can tell that 4 half-lives are 60 days.
Important Note
In this question, I rounded occasionally. So, not all of the values are exact, but they are all very close.
