Answer: 1, 3, 2, 4. The first thing she did in the question is the first she should do when preparing. The second thing she did should be the third. The third thing she did should be the second thing she does. The fourth should be the last.
Explanation: When making a presentation, first one should choose a topic, then research it and write the presentation, then practice, then give it.
The acceleration of a different speck of dust is 40 m/s.
Since the radius is been given as double and angular velocity will be constant, we can calculate the centripetal acceleration as
a = (2r)ω²
If we substitute the given values of r= 2r , and ω²= 20m/s.
Then we have

Therefore, acceleration of a different speck of dust is 40 m/s.
<h3>What is centripetal acceleration?</h3>
centripetal acceleration can be regarded as acceleration of a body that is traversing a circular path.
CHECK THE COMPLETE QUESTIONS;
A speck of dust on a spinning dvd has a centripetal accelera- tion of 20 m/s2.
a. what is the acceleration of a different speck of dust that is twice as far from the center of the disk?
Learn more about centripetal acceleration at;
brainly.com/question/6217221
The three (3) security goals that would align and prioritize security efforts to the business goals of an organization are:
1. Confidentiality
2. Integrity
3. Availability
A security goal can be defined as both the short-term and long-term strategic objectives that detects and protects the assets of a business organization from theft or misappropriation by any internal or external party.
This ultimately implies that, it is very important that security goals of a business organization are aligned with its business goals.
Generally, there are three (3) main security goals for all business organizations and these include:
- <u>Confidentiality:</u> the confidentiality of all data and assets should be well protected.
- <u>Integrity:</u> the integrity of all data and assets should be preserved.
- <u>Availability:</u> all data and assets should be provided for authorized use only.
Read more on security goals here: brainly.com/question/25734235
Using the binomial distribution, it is found that there is a:
- 0.0036 = 0.36% probability that both are allergic to pollen.
- 0.1164 = 11.64% probability that at least one is allergic to pollen.
<h3>What is the binomial distribution formula?</h3>
The formula is:


The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
Researching the problem on the internet, it is found that:
- 6% of the population is allergic to pollen, hence p = 0.06.
- Two people are chosen at random, hence n = 2.
The probability that both are allergic is P(X = 2), hence:
P(X = 2) = 0.06^2 = 0.0036.
0.0036 = 0.36% probability that both are allergic to pollen.
The probability of at least one is:
P(X >= 1) = 1 - P(X = 0) = 1 - 0.94^2 = 1 - 0.8836 = 0.1164.
0.1164 = 11.64% probability that at least one is allergic to pollen.
More can be learned about the binomial distribution at brainly.com/question/24863377