The best way for andrea to build up a diversified portfolio of stocks is; by putting her money into dollar-cost averaging.
<h3>What is dollar-cost averaging?</h3>
Dollar-cost averaging is defined as an investment strategy in whereby the individual periodically purchases target assets or invests in a certain portion of funds in one security.
This therefore tells us that Dollar-cost averaging would reduce the risk tolerance associated with purchasing large stock securities.
Thus, we can recommend dollar cost averaging as the best way for andrea to build up a diversified portfolio of stocks.
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An example of Elementary linear algebra 11th edition is given in the image attached.
<h3>What is elementary linear algebra?</h3>
Linear algebra is known to be a part of math work. It is known to be the most easiest form of upper-level math works example is abstract algebra.
Conclusively, using the image attached, the answer will be (x1, x2) = (–8, 3)
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With the help of pop-up notifications (alerts) within the EHR, Dr. Peters is given reminders for specific screening tests for patients.
<h3>What is EHR?</h3>
EHR is an acronym for electronic health record and it can be defined as a systematized collection of a patient's medical history that are electronically stored in a digital format.
In this context, we can infer and logically deduce that with the help of pop-up notifications (alerts) within the electronic health record (EHR), Dr. Peters is given reminders for specific screening tests for patients.
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The number of electrons passes through 20 ohms resistor in 10 minutes is 5.625e+21.
<h3>What is a resistor?</h3>
In an electronic circuit, a resistor is an electrical component that limits or regulates the flow of electrical current.
Given, the resistance is 20 ohms.
The potential difference is 30 volts
Time is 10 minute
By the formula of current

The charge flowing through the resistor is 1.5 C/s
1 electron charge is 1.6e+19
Now, the number of electrons passing through a 20 ohms resistor is

In 10 minutes

Thus, the number of electrons passes through 20 ohms resistor in 10 minutes is 5.625e+21.
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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.
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