16.05.2021


Question #2
A,b,c

Question #3

. 1

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24.01.2023, solved by verified expert
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Answer:

Answers explained below.

Step-by-step explanation:

Given, 

Sarah' age = x years

Thomas's age = (x + 3) years

David's age = 2x years

Sum of their ages = 51 years

(a) As mentioned before, the expression for Thomas's age = x + 3

(b) As mentioned before, the expression for David's age = 2x

(c) So, according to the question, the expression for solving for x is :

x + (x + 3) + 2x = 51

4x + 3 = 51

x = 48/4

Thus, x = 12

Hence, Sarah's age = 12 years

Question 3.

Given that, 

Cost of an Xbox = $x

So, cost of a Playstation = $(x + 15) 

Total cost of both = $335

So, 

x + (x + 15) = 335

x = 320/2

Thus, x = 160

Hence, cost of a playstation = $(160 + 15) = $175

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Faq

English
Step-by-step answer
P Answered by PhD

1. The text structure signaled by clue words such as result is:

C. cause and effect

2. The reason the author of the argument against eating less meat think that reducing meat consumption will not make a difference is:

G. Plant-based agriculture uses more resources than livestock farming.

3. The author effectively supports the claim by:

J. by calling out the problems with the GLEAM model and meat alternatives

4. The claim that the author makes as a pro for doing away with the Electoral College is:

P. The Electoral College potentially throws off the balance established in the legislative branch by the Constitution.

5. This excerpt provides evidence that effectively supports the claim identified in Part A

Q. Yes, because it explains how the Constitution establishes balance in the legislature.

Explanation:

A claim is an assertion made by a party to an argument by which the party declares that something is true.  It is usually supported by some evidence, but it is not necessary that the person making the claim must supply some. Therefore, a claim indicates the asserting party's opinion and preferences.

English
Step-by-step answer
P Answered by PhD

1. The text structure signaled by clue words such as result is:

C. cause and effect

2. The reason the author of the argument against eating less meat think that reducing meat consumption will not make a difference is:

G. Plant-based agriculture uses more resources than livestock farming.

3. The author effectively supports the claim by:

J. by calling out the problems with the GLEAM model and meat alternatives

4. The claim that the author makes as a pro for doing away with the Electoral College is:

P. The Electoral College potentially throws off the balance established in the legislative branch by the Constitution.

5. This excerpt provides evidence that effectively supports the claim identified in Part A

Q. Yes, because it explains how the Constitution establishes balance in the legislature.

Explanation:

A claim is an assertion made by a party to an argument by which the party declares that something is true.  It is usually supported by some evidence, but it is not necessary that the person making the claim must supply some. Therefore, a claim indicates the asserting party's opinion and preferences.

Arts
Step-by-step answer
P Answered by PhD

1. I agree with you, the correct answers are A.Their paintings are representational with many details, B. Charles Willson Peale was an artist, scientist, inventor, and soldier and D.The Peale family has been called the First Family of American Painting.

 

The Peale family documented leading citizens and created paintings to decorate their homes for 125 years Philadelphia, United States. Peale family was headed by Charles Willson Peale, an artist, scientist, inventor, and soldier. The Peale family has been called the First Family of American Painting, which paintings are representational with many details.

 

2. I agree with you, the correct answer is B. It is representational.

 

Representational art refers to paintings or drawings that are clearly recognizable for what they appear to be or true to life. John James Audubon had a specific way to paint that. He stuffed birds as they are in motion and portrayed them in natural habitat.

 

3. I agree with you, the correct answer is C. He made paintings of birds found in North America.

John James Audubon was an American ornithologist, naturalist, and painter, but he was born in Les Cayes in the French colony of Saint-Domingue (now Republic of Haiti). He is noted for his paintings of birds found in North America and his major work, a color-plate book entitled “The Birds of America” (1827–1839).

 

4. I agree with you, the correct answers are A. It has elements of Greek and Roman architecture and C. It has features like a frieze and pediment.

 

Federal-style architecture represents the classicizing architecture built in the newly founded United States between c. 1780 and 1830. The federal-style architecture has elements of Greek and Roman architecture and features like a frieze and pediment, because founding generation in United States consciously chose to associate the nation with the ancient democracies of Greece and the republican values of Rome, but has crossed it with Georgian architecture that had been practiced in the American colonies

 

5. I agree with you, the correct answer is A. True.

 

The “Concord Minuteman” by Daniel Chester French is a patriotic American sculpture. The “Concord Minuteman” represents an image of a Revolutionary War "Minute Man" which nowadays found at the Old North Bridge in Concord, Massachusetts, where the first armed conflict of the American Revolution took place.

 

6. I agree with you, the correct answer is B. False.

 

The American sculpture has many forms and genres, but the Early American sculpture was “modest efforts of craftsmen who adorned gravestones, Bible boxes, and various utilitarian objects with simple low-relief decorations” and not often based on Greek myths and figures more beautiful than real people. After this period of beginning of sculpture in 1600th, American sculptures have been influenced by Italian art.

 

7. I agree with you, the correct answers are B. He used lifelike colors in his paintings. and C.He used realistic shapes in his paintings.

 

Thomas Sully's was an American portrait painter who painted historical figures such as  Thomas Jefferson, John Quincy Adams, and Marquis de Lafayette. His artistic style may be called representational as he used realistic shapes and lifelike colors in his paintings.

Arts
Step-by-step answer
P Answered by PhD

1. I agree with you, the correct answers are A.Their paintings are representational with many details, B. Charles Willson Peale was an artist, scientist, inventor, and soldier and D.The Peale family has been called the First Family of American Painting.

 

The Peale family documented leading citizens and created paintings to decorate their homes for 125 years Philadelphia, United States. Peale family was headed by Charles Willson Peale, an artist, scientist, inventor, and soldier. The Peale family has been called the First Family of American Painting, which paintings are representational with many details.

 

2. I agree with you, the correct answer is B. It is representational.

 

Representational art refers to paintings or drawings that are clearly recognizable for what they appear to be or true to life. John James Audubon had a specific way to paint that. He stuffed birds as they are in motion and portrayed them in natural habitat.

 

3. I agree with you, the correct answer is C. He made paintings of birds found in North America.

John James Audubon was an American ornithologist, naturalist, and painter, but he was born in Les Cayes in the French colony of Saint-Domingue (now Republic of Haiti). He is noted for his paintings of birds found in North America and his major work, a color-plate book entitled “The Birds of America” (1827–1839).

 

4. I agree with you, the correct answers are A. It has elements of Greek and Roman architecture and C. It has features like a frieze and pediment.

 

Federal-style architecture represents the classicizing architecture built in the newly founded United States between c. 1780 and 1830. The federal-style architecture has elements of Greek and Roman architecture and features like a frieze and pediment, because founding generation in United States consciously chose to associate the nation with the ancient democracies of Greece and the republican values of Rome, but has crossed it with Georgian architecture that had been practiced in the American colonies

 

5. I agree with you, the correct answer is A. True.

 

The “Concord Minuteman” by Daniel Chester French is a patriotic American sculpture. The “Concord Minuteman” represents an image of a Revolutionary War "Minute Man" which nowadays found at the Old North Bridge in Concord, Massachusetts, where the first armed conflict of the American Revolution took place.

 

6. I agree with you, the correct answer is B. False.

 

The American sculpture has many forms and genres, but the Early American sculpture was “modest efforts of craftsmen who adorned gravestones, Bible boxes, and various utilitarian objects with simple low-relief decorations” and not often based on Greek myths and figures more beautiful than real people. After this period of beginning of sculpture in 1600th, American sculptures have been influenced by Italian art.

 

7. I agree with you, the correct answers are B. He used lifelike colors in his paintings. and C.He used realistic shapes in his paintings.

 

Thomas Sully's was an American portrait painter who painted historical figures such as  Thomas Jefferson, John Quincy Adams, and Marquis de Lafayette. His artistic style may be called representational as he used realistic shapes and lifelike colors in his paintings.

StudenGPT
Step-by-step answer
P Answered by Studen AI
To find the expected return of the portfolio, we need to calculate the weighted average of the individual expected returns. The formula to calculate the expected return is: \[ \text{{Expected Return}} = \sum (\text{{Mean Return}}_i \times \text{{Weight}}_i) \] where \(\text{{Mean Return}}_i\) represents the mean return for asset i, and \(\text{{Weight}}_i\) represents the weight of asset i in the portfolio. Given the following information: \begin{tabular}{llll} Statistics & A & B & C \\ Mean (Monthly Return) & 3.8 & 4.8 & 6.2 \\ Standard Deviation & 5.2 & 7.6 & 9.8 \\ Weights & 0.25 & 0.25 & 0.50 \end{tabular} We can substitute the values into the formula: \[ \text{{Expected Return}} = (3.8 \times 0.25) + (4.8 \times 0.25) + (6.2 \times 0.50) \] Now, let's calculate: \[ \text{{Expected Return}} = (0.95) + (1.2) + (3.1) \] \[ \text{{Expected Return}} = 5.25 \] Therefore, the expected return of your portfolio is 5.25. Using the math laws: 1. Distributive Law: We can distribute the multiplication over addition. For example, in the calculation of the expected return, we distributed the weights over the mean returns. 2. Associative Law: We can change the order of addition or multiplication without affecting the result. 3. Commutative Law: We can change the order of addition or multiplication without affecting the result. 4. Identity Law: Any number multiplied by 1 equals itself. In this case, any weight multiplied by 1 is the same weight. 5. Inverse Law: Any number multiplied by 0 equals 0. In this case, any weight multiplied by 0 is 0, meaning that asset won't contribute to the total expected return. Let's move on to the second question: the risk level (standard deviation) associated with the portfolio. To calculate the standard deviation of a portfolio, we need to use the weighted average of the individual standard deviations and consider the correlation between assets. The formula to calculate the portfolio standard deviation is: \[ \text{{Portfolio Standard Deviation}} = \sqrt{\sum \left( \text{{Weight}}_i^2 \times (\text{{Standard Deviation}}_i^2) \right) + 2 \times \text{{Weight}}_1 \times \text{{Weight}}_2 \times \text{{Standard Deviation}}_1 \times \text{{Standard Deviation}}_2 \times \text{{Correlation}}_{12}} \] where \(\text{{Weight}}_i\) represents the weight of asset i, \(\text{{Standard Deviation}}_i\) represents the standard deviation of asset i, and \(\text{{Correlation}}_{12}\) represents the correlation between assets 1 and 2. Given the correlation matrix: \[ \begin{array}{lll} \text { A } 1 & 0.150 & -0.120\\ 0.150 & 1 & 0.750\\ -0.120 & 0.750 & 1\\ \end{array} \] We can substitute the values and calculate the standard deviation: \[ \text{{Portfolio Standard Deviation}} = \sqrt{(0.25^2 \times 5.2^2) + (0.25^2 \times 7.6^2) + (0.50^2 \times 9.8^2) + 2 \times 0.25 \times 0.25 \times 5.2 \times 7.6 \times 0.150 + 2 \times 0.25 \times 0.50 \times 5.2 \times 9.8 \times (-0.120) + 2 \times 0.25 \times 0.50 \times 7.6 \times 9.8 \times 0.750} \] Now, let's calculate: \[ \text{{Portfolio Standard Deviation}} \approx 3.1227 \] Therefore, the risk level (standard deviation) associated with the portfolio is approximately 3.1227.
StudenGPT
Step-by-step answer
P Answered by Studen AI
To solve the given problem, we can use the formulas for expected return and standard deviation of a portfolio. Question 1: What is the expected return of your portfolio? The expected return of a portfolio can be calculated by weighting the individual expected returns of the assets in the portfolio. Let's denote the expected return of assets A, B, and C as \(E(A)\), \(E(B)\), and \(E(C)\) respectively. The weights of the assets are given as 0.25, 0.25, and 0.50 respectively. The formula for expected return of a portfolio (\(E(P)\)) is: \[E(P) = w_A \cdot E(A) + w_B \cdot E(B) + w_C \cdot E(C)\] where \(w_A\), \(w_B\), and \(w_C\) are the respective weights. Substituting the values given in the question, we have: \[E(P) = 0.25 \cdot 3.8 + 0.25 \cdot 4.8 + 0.50 \cdot 6.2\] \[E(P) = 0.95 + 1.2 + 3.1\] \[E(P) = 5.25\] Therefore, the expected return of the portfolio is 5.25. Now let's move on to the second question. Question 2: What is the risk level (standard deviation) associated with the portfolio? The standard deviation of a portfolio can be calculated using the formula: \[\text{{Standard Deviation}}(P) = \sqrt{{w_A}^2 \cdot \text{{Var}}(A) + {w_B}^2 \cdot \text{{Var}}(B) + {w_C}^2 \cdot \text{{Var}}(C) + 2 \cdot w_A \cdot w_B \cdot \text{{Cov}}(A, B) + 2 \cdot w_A \cdot w_C \cdot \text{{Cov}}(A, C) + 2 \cdot w_B \cdot w_C \cdot \text{{Cov}}(B, C)}\] where \(\text{{Var}}(A)\), \(\text{{Var}}(B)\), and \(\text{{Var}}(C)\) are the variances of assets A, B, and C respectively, and \(\text{{Cov}}(A, B)\), \(\text{{Cov}}(A, C)\), and \(\text{{Cov}}(B, C)\) are the covariances between the asset pairs. From the given correlation matrix, we can compute the covariances using the formula: \[\text{{Cov}}(A, B) = \text{{Corr}}(A, B) \cdot \text{{SD}}(A) \cdot \text{{SD}}(B)\] \[\text{{Cov}}(A, C) = \text{{Corr}}(A, C) \cdot \text{{SD}}(A) \cdot \text{{SD}}(C)\] \[\text{{Cov}}(B, C) = \text{{Corr}}(B, C) \cdot \text{{SD}}(B) \cdot \text{{SD}}(C)\] where \(\text{{SD}}(A)\), \(\text{{SD}}(B)\), and \(\text{{SD}}(C)\) are the standard deviations of assets A, B, and C respectively, and \(\text{{Corr}}(A, B)\), \(\text{{Corr}}(A, C)\), and \(\text{{Corr}}(B, C)\) are the correlations between the asset pairs. Given the values from the table, substituting the values, we have: \(\text{{Cov}}(A, B) = 0.150 \cdot 5.2 \cdot 7.6\) \(\text{{Cov}}(A, C) = -0.120 \cdot 5.2 \cdot 9.8\) \(\text{{Cov}}(B, C) = 0.750 \cdot 7.6 \cdot 9.8\) Now we can calculate the standard deviation of the portfolio: \(\text{{Standard Deviation}}(P) = \sqrt{{0.25}^2 \cdot 5.2^2 + {0.25}^2 \cdot 7.6^2 + {0.50}^2 \cdot 9.8^2 + 2 \cdot 0.25 \cdot 0.25 \cdot \text{{Cov}}(A, B) + 2 \cdot 0.25 \cdot 0.50 \cdot \text{{Cov}}(A, C) + 2 \cdot 0.25 \cdot 0.50 \cdot \text{{Cov}}(B, C)}\) Substituting the calculated covariances, we have: \(\text{{Standard Deviation}}(P) = \sqrt{{0.25}^2 \cdot 5.2^2 + {0.25}^2 \cdot 7.6^2 + {0.50}^2 \cdot 9.8^2 + 2 \cdot 0.25 \cdot 0.25 \cdot (0.150 \cdot 5.2 \cdot 7.6) + 2 \cdot 0.25 \cdot 0.50 \cdot (-0.120 \cdot 5.2 \cdot 9.8) + 2 \cdot 0.25 \cdot 0.50 \cdot (0.750 \cdot 7.6 \cdot 9.8)}\) Now we can simplify the expression and calculate the standard deviation.
Mathematics
Step-by-step answer
P Answered by Master

A) The hypotenuse is the longest side of the triangle .In the figure EG is the hypotenuse.The given angle is <G=40 degrees.The side adjacent is FG= 10 units.

The question is asking us to find the trigonometry ratio which will  help us find EG.We can use cos  as cos is ratio of adjacent and hypotenuse.

cos 40=\frac{10}{Hypotenuse EG.}

B) Cos  40 =0.766.

Substituting tan40 value we have:

0.766=\frac{10}{EG}

EG=13.05.

C)Sum of angles in  triangle is 180.

<E+<F+<G=180

<E+90+40=180

<E+130=180

<E=50 degrees.

D) Tan  40=\frac{EF}{10}

EF=8.39

E) Area of triangle EFG= \frac{1}{2}x base x height.

A rea of the triangle = \frac{1}{2}x8.39x13.05

Area= 54.75 square units.

StudenGPT
Step-by-step answer
P Answered by Studen AI
Based on the provided text, the questions appear to be part of a reading comprehension exercise. It seems that the questions are related to a story or passage that is not included in the information provided. To provide a detailed and thorough answer, I would need access to the actual text or passage containing the story.

If you could provide the complete story or passage, I would be happy to help answer the questions in a step-by-step manner and explain the reasoning behind each answer.
Mathematics
Step-by-step answer
P Answered by PhD
A. For the first two questions, there are 2 choices, true and false. The three questions will have 3 choices. The number of ways that student can complete the test is,

            n = 2 x 2 x 3 x 3 x 3

               n = 108

C. 108

B. From 0 to 9, there are 10 digits. There are also 26 and as per given, there are 4 symbols. The number of ways that the code can be made is,

       n = 10 x 9 x 26 x 25 x 4

        n = 234,000

C. 234,000

C. In the word, EXPERIMENT, there are 10 letters. Three of which are letter Es. The number of ways that the letters can be arranged is,

               n = 10!/3!

                 n = 604,800

D. 604,800

D. If the arrangement is not important and that only the combination is important, the number of ways that the instructor can send 4 out of the 11 is,

               n = 11C4 = 330

A. 330

E. If only one of the five keys can start the car then, the probability that the chosen key can start the car is equal to the ratio of the number of key to the total number of keys.

      n = (1/5)(100%) = 20%

C. 20%

F. The events of picking the winning card and picking or choosing the losing card are complementary events such that the sum of their probabilities should be equal to 1 or 100%. 

                    P = 100 - (2.9%) 
                      P = 97.1%

D. 97.1%
Mathematics
Step-by-step answer
P Answered by Specialist

A) The hypotenuse is the longest side of the triangle .In the figure EG is the hypotenuse.The given angle is <G=40 degrees.The side adjacent is FG= 10 units.

The question is asking us to find the trigonometry ratio which will  help us find EG.We can use cos  as cos is ratio of adjacent and hypotenuse.

cos 40=\frac{10}{Hypotenuse EG.}

B) Cos  40 =0.766.

Substituting tan40 value we have:

0.766=\frac{10}{EG}

EG=13.05.

C)Sum of angles in  triangle is 180.

<E+<F+<G=180

<E+90+40=180

<E+130=180

<E=50 degrees.

D) Tan  40=\frac{EF}{10}

EF=8.39

E) Area of triangle EFG= \frac{1}{2}x base x height.

A rea of the triangle = \frac{1}{2}x8.39x13.05

Area= 54.75 square units.

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