Answer:i think its a but im not sure
Explanation:
2. Find the solution of each differential equation. (a) y/2y-8y = 0 (b) 25y/- 20y + 4y = 0 (c) y + 2y + 2y = 0 2. Find the solution of each differential equation . ( a ) y / 2y - 8y = 0 ( b ) 25y / - 20y + 4y = 0 ( c ) y + 2y + 2y = 0
Each of these ODEs is linear and homogeneous with constant coefficients, so we only need to find the roots to their respective characteristic equations.
(a) The characteristic equation for
[tex]y'' - 2y' - 8y = 0[/tex]
is
[tex]r^2 - 2r - 8 = (r - 4) (r + 2) = 0[/tex]
which arises from the ansatz [tex]y = e^{rx}[/tex].
The characteristic roots are [tex]r=4[/tex] and [tex]r=-2[/tex]. Then the general solution is
[tex]\boxed{y = C_1 e^{4x} + C_2 e^{-2x}}[/tex]
where [tex]C_1,C_2[/tex] are arbitrary constants.
(b) The characteristic equation here is
[tex]25r^2 - 20r + 4 = (5r - 2)^2 = 0[/tex]
with a root at [tex]r=\frac25[/tex] of multiplicity 2. Then the general solution is
[tex]\boxed{y = C_1 e^{2/5\,x} + C_2 x e^{2/5\,x}}[/tex]
(c) The characteristic equation is
[tex]r^2 + 2r + 2 = (r + 1)^2 + 1 = 0[/tex]
with roots at [tex]r = -1 \pm i[/tex], where [tex]i=\sqrt{-1}[/tex]. Then the general solution is
[tex]y = C_1 e^{(-1+i)x} + C_2 e^{(-1-i)x}[/tex]
Recall Euler's identity,
[tex]e^{ix} = \cos(x) + i \sin(x)[/tex]
Then we can rewrite the solution as
[tex]y = C_1 e^{-x} (\cos(x) + i \sin(x)) + C_2 e^{-x} (\cos(x) - i \sin(x))[/tex]
or even more simply as
[tex]\boxed{y = C_1 e^{-x} \cos(x) + C_2 e^{-x} \sin(x)}[/tex]
Use midpoints to approxiamte the area under the curve y=f(x) 5 sin(xx)!+ 2.5 cos(4xx) on the interval [0,1] using 10 equal subdivisions.
Subdividing [0, 1] into 10 equally spaced intervals of length [tex]\Delta x=\frac{1-0}{10}=\frac1{10}[/tex] gives the partition
[tex][0,1] = \left[0,\dfrac1{10}\right] \cup \left[\dfrac1{10},\dfrac2{10}\right] \cup \cdots \cup \left[\dfrac9{10},1\right][/tex]
The [tex]i[/tex]-th subinterval has left and right endpoints, respectively, given by
[tex]\ell_i = \dfrac{i-1}{10} \text{ and } r_i = \dfrac i{10}[/tex]
where [tex]i\in\{1,2,3,\ldots,10\}[/tex].
The midpoint of the [tex]i[/tex]-th interval is the average of these,
[tex]m_i = \dfrac{\ell_i+r_i}2 = \dfrac{2i-1}{20} \in \left\{\dfrac1{20},\dfrac3{20},\dfrac5{20},\ldots,\dfrac{19}{20}\right\}[/tex]
We approximate the area under [tex]f(x)[/tex] over [0, 1] by the Riemann sum,
[tex]\displaystyle \int_0^1 f(x) \, dx \approx \sum_{i=1}^{10} f(m_i) \Delta x \\\\ ~~~~~~~~ = \frac1{10} \sum_{i=1}^{10} \bigg(5\sin(\pi m_i) + 2.5 \cos(4\pi m_i)\bigg) \\\\ ~~~~~~~~ = \frac{\sin\left(\frac\pi{20}\right) + \sin\left(\frac{3\pi}{20}\right) + \cdots + \sin\left(\frac{19\pi}{20}\right)}2 \\\\ ~~~~~~~~~~~~ + \dfrac{\cos\left(\frac\pi5\right) + \cos\left(\frac{3\pi}5\right) + \cdots + \cos\left(\frac{19\pi}5\right)}4 \\\\ ~~~~~~~~ \approx 3.19623[/tex]
(D)
Negative externalities result in costs borne by _____.
A.
the government
B.
producers
C.
consumers
D.
third parties
In the case above, Negative externalities result in costs borne by third parties.
What is the outcome from negative externalities?A negative externality is one that is found if the production or consumption of a product is said to come about due to a cost to a third party.
Note that its example is Air and noise pollution and as such, In the case above, Negative externalities result in costs borne by third parties.
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A recent recession has reduce the number of visitors at a local theme park the park has to lay off many of its employees including Lucretia what is the categorized unemployed for the bureau of Labor statistics?
According to bureau of Labor statistics, Lucretia's unemployment would be categorized as cyclical unemployment.
The types of unemployment.According to bureau of Labor statistics, unemployment is divided into various types and these include the following;
Frictional unemployment (FU).Structural unemployment (SU).Actual unemployment (AU).Cyclical unemployment (CU).In this scenario, Lucretia's unemployment would be categorized as cyclical unemployment because it was as a result of an economic factor known as recession.
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just answer this with anything, trying to get rid of points .
Answer:
Taco Bell
Explanation:
Answer:
Burger King!!!!!!!
The lifetime odds of getting hooked on cocaine after trying the drug is _____ percent.
What is the marginal tax rate (rounded to the nearest tenth of a percentage point) for someone whose income increases from $50,000 to $80,000?
See screenshot for table
Answer:
I've done the outline for u, just fill in the blanks and you'd get the answers.
A man buys 5 horses and 7 bulls for Rs.1950. He sells the horses at a profit of 10% and bulls at a profit on 16% and on the whole his gain is rs.237.What price does he profit for a horse
Answer:
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You can Try to refer to this questions and solve it!
Q.Logic is ether a science or an art but it is anart therefore it can't be a science
(Calculate Rules of Mixed Arguments)
Logic can be regarded as the science and art that pertains to reasoning well.
Is logic a science or an art?Logic is seen as a science because it tries to know or see the rules of reasoning and logic is seen as an art because it tries to use those rules to create a rational discourse.
Hence one can say that Logic can be regarded as the science and art that pertains to reasoning well.
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Pick one of the Six Discoveries in Infancy and discuss it.
1. Organize attention into patterns and thought (schemes for learning)
2. Use tools
3. Make the relationship of cause and effect
4. Understand how objects move and fit in space
5. Understanding that objects are permanent
6. Understand the power of imitation
What are your thoughts and/or experiences with this discovery concept?
The one i am going to discuss among the 6 Discoveries in Infancy is Discovery 6 : Imitation.
What is Discovery 6about?Discovery 6 is known to be the steps in infancy where a child is said to learn about how Imitation influences one's action.
In this step, in the first two years of life, the infant is known to be very good at imitating others and as such, My thought is that parents and siblings of the child need to mindful of what they do or say in their presence.
Note that Imitation is said to be a very essential learning skill and as such a child in his or her early stage of life do imitate their own behaviors and they also mimic things they see, from body activity to others.
A laughable experience is that my brother always hear my Dad calling my Mum "my Honey, my beautiful wife. My brother ends up calling my mother the same for a while and would not stop if ask to or corrected as he believes it was right and he only stopped when he grew pass that stage. Therefore one should know and understand that power of imitation is strong and can influence a child positively or negatively.
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Which of the following are examples of developmentally appropriate practices that relate to the physical environment?
Some examples of developmentally appropriate practices that relate to the physical environment are:
ChairsBookshelvesActivity shelvesPicturesPush toysWhat is a developmentally appropriate practice?A developmentally appropriate practice can be defined as a teaching perspective that is adopted in early childhood education and it requires socially, emotionally, and physically nurturing the cognitive development of a child.
In this context, some examples of developmentally appropriate practices that relate to the physical environment are:
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————————
Stages that occurred during the formation of our solar system
So, for the formation of the solar system, a hypothesis or "theory" was made and it is called the Solar Nebula theory.
So here goes,
A vast cloud of dust once existed where our solar system is now. Static electricity drove the particles to begin clumping together over a period of billions of years. The clumps kept expanding because of the increased gravitational attraction they had on neighboring particles as they grew bigger. Mercury through Mars are examples of heavier clumps, or those with larger amounts of heavy elements in their compositions, that eventually evolved into the inner, or rocky, planets. The outer, gaseous planets, which include Jupiter through Neptune, were formed from lighter groupings. The sun emerged as the biggest, heaviest mass of all.
The clumps, which were now the size of planets, used gravity to catch additional clumps, which developed into moons. For instance, Mars managed to snag a few asteroids. Jupiter photographed an amazing variety of bodies. However, it should be noted that the moon of Earth is assumed to have formed as a result of a large collision that sent some of the planet's mantle into space.
Although we consider our solar system to be developed, "clump capture" is still going on. The planets constantly sweep up junk in their courses as they move through space. Saturn is gradually consuming its renowned rings, meteor showers on Earth occur as we travel through debris fields, and so on.
The process by which the body cells use oxygen and glucose to produce energy while realising carbon dioxide and water vapor as waste products is known as
Answer:
your answer is respiration
Explanation:
is just facts and science :)
hope it helpes
What has happened when the demand curve shifts to the left?
Answer:
Both price and quantity decrease.
Which of the following is a structured activity?
OA
swimming
OB. riding a bike
OC. making cartwheels
D.
playing national level basketball
The structured activity among the given options is, "playing national level basketball." The correct option is D.
What is structured activity?Learning exercises that are structured have a defined start, middle, and end. Every piece or type of piece has a clear function in the completion of the play activity, and there is typically a rule or set of rules.
Activities that are structured are ones that are planned, organized, and frequently include rules or guidelines.
Usually directed by a coach, instructor, or other authoritative figure, these activities have a clear goal or objective.
Swimming, biking, and doing cartwheels can all be fun and healthy activities, but they are often less regimented than sports like basketball, which require a lot of planning, organization, and coaching.
Of the many possibilities, "playing national level basketball" is the structured activity.
Thus, the correct option is D.
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COMPREHENSIVE PROBLEM
CPS On December 1, 2017, Rodriguez Distributing Company had the following account balances.
Debit
Cash
$ 7,200
4,600
Accounts Receivable
Accumulated Depreciation Equipment
$2,200
Inventory
Supplies
12,000
1,200
Accounts Payable
Salaries and Wages Payable
4,500 1,000
Equipment
Owner's Capital
39,300
$47,000
22,000
$47,000
Credit
During December, the company completed the following summary transactions.
Dec. 6 Paid $1,600 for salaries and wages due employees, of which $600 is for December and
$1,000 is for November salaries and wages payable.
8 Received $2,200 cash from customers in payment of account (no discount allowed). 10 Sold merchandise for cash $6,300. The cost of the merchandise sold was $4,100.
13 Purchased merchandise on account from Boehm Co. $9,000, terms 2/10, n/30. 15 Purchased supplies for cash $2,000
18 Sold merchandise on account $15,000, terms 3/10, n/30. The cost of the merchandise sold
was $10,000.
20 Paid salaries and wages $1,800. 23 Paid Boehm Co. in full, less discount.
27 Received collections in full, less discounts, from customers billed on December 18.
Adjustment data:
1. Accrued salaries and wages payable $840.
2. Depreciation $200 per month.
3. Supplies on hand $1,500.
Instructions
(a) Journalize the December transactions using a perpetual inventory system.
(b) Enter the December 1 balances in the ledger T-accounts and post the December transactions. Use Cost of Goods Sold, Depreciation Expense, Salaries and Wages Expense, Sales Revenue, Sales Discounts, and Supplies Expense.
(c) Journalize and post adjusting entries.
(d) Prepare an adjusted trial balance.
(e) Prepare an income statement and an owner's equity statement for December ance sheet at December 31.
(d) Totals S and a classified bal- (e) Net income $
55 Accounting for Merchandising Operations
What is a good start for learning psychology?
Answer:
A great start would be any introduction to psychology textbooks you can find that will give you an overview of the history of psychology, as well as an introduction to some of the founding pioneers in the field. A popular choice amongst beginners is Hergenhahn's An Introduction to the History of Psychology.
Explanation:
Due to a large flood, sediment settles in a local river bed, making it more shallow on the river's bank. Which is most likely to occur in the river?
A Cooler water and less dissolved oxygen
B Warmer water and more dissolved oxygen
C Lower dissolved oxygen on the shallow banks
D Oligotrophic water along the shallow riverbank
Will give 100 points if answer correct.
A phenomenon which is most likely to occur in this river is: C. lower dissolved oxygen on the shallow banks.
What is a river?A river refers to a large natural body of fresh water that continuously flow into an ocean, lake, sea or another river. Also, some examples of a river include the following:
MississippiSaint LawrenceRiver NileDanubeAmazonWhen sediment settles in a local river bed due to large flood, it makes it more shallow on the river's bank with lower dissolved oxygen on the shallow banks.
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Question 17
The plot of a new reality tv show pits celebrities against one another in a baking competition. On one episode, a famous sushi chef
squares off against a popular actress. The judges exclaim that this will be a challenge for the actress, since her opponent is an
experienced chef.
Which of the following is an underlying assumption of the argument above?
1. An expert sushi chef is likely to have above average baking skills.
2. It is unlikely that an actress has practiced baking.
3. The judges have a deep understanding of each participant's baking skill.
Submit
Answer:
1
Explanation:
Which of the follow is one of the six approaches to changing undesirable behavior in toddlers?
a) Teach socially acceptable behaviors.
b) Ignore the behavior you want the child to change.
c) Restructure the situation.
d) all of the above
One of the six (6) approaches to changing an undesirable behavior in toddlers is: d. all of the above.
What is behavior modification?Behavior modification is a therapeutic process that changes any undesirable behavior in an individual, especially through the use of positive or negative consequence and biofeedback.
In Psychology, the six (6) approaches to changing an undesirable behavior in toddlers are:
Teach them socially acceptable behaviors.Ignore the behavior you want toddlers to change.Restructure the situation.Pay keen attention to a behavior that is socially acceptable.Prevent any harmful behavior from happening.Redirect this energy when necessary and appropriate.Read more on behaviors here: https://brainly.com/question/15600167
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.
According to evidence found by scientists, where did Old Stone Age people travel across open ocean in rafts or canoes?
All of the following characterize women in a country with a low Gender Empowerment Measure ranking EXCEPT :
many are agricultural workers
divorce is illegal
few are in managerial positions
women have smaller representation in legislative bodies
men earn more than women
All of the aforementioned characterize women in a country with a low Gender Empowerment Measure ranking except: A. many are agricultural workers.
What is Gender Empowerment Measure?Gender Empowerment Measure (GEM) can be defined as an index that is designed and developed to measure the level of inequalities between opportunities that are available to both men and women in a country.
In this context, we can infer and logically deduce that all of the aforementioned characterize women in a country with a low Gender Empowerment Measure ranking except stating that many are agricultural workers.
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which two columns are mislabled
Based on the Excel table, the two columns that are mislabeled are:
First order date.Most recent order date.What is an Excel table?An Excel table can be defined as a rectangular range of data set in a spreadsheet document, which consist of cells that are arranged in rows and columns.
In this scenario, we can logically deduce that the "First order date" and "Most recent order date" are the two columns that are mislabeled because the date for the first order should normally come before the most recent order.
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Which economic problem most affected the livelihoods of farmers in both the
South and the West during the late 19th century?
A. Declining crop prices that led to indebtedness
B. Rapid inflation of the money supply
C. The struggle to farm difficult, unfamiliar soil
D. Population growth that reduced available farm land
Richard Strauss's Also Sprach Zarathustra, Op. 30 in the 2019 BMW i3 Plug into Something Bold commercial
Use your research and add the following details to your presentation:
a copyright credit for the original song, like its title and the artist who performed it
a description of any elements of music in the commercial, like form, rhythm, and melody
compare and contrast the original music to the commercial music, like if the elements of music were changed or the song was modified to fit the commercial
how the music helps promote the product
The tone of the music is one of orchestric quality as there is the:
use of trumpetsa fan-fare figurethe use of perfect intervalsthe creation of effects of strength, optimism, and unity are displayed.What was Richard Strauss's Also Sprach Zarathustra all about?This refers to the use of music to respond to Friedrich Nietzsche's philosophical treatise about a crisis in European thought, the rise of science, religion, etc.
Hence, we can see that Richard Strauss made use of repetition as he repeats the opening fanfare as it rises in intensity each time and reaches a major cadence.
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use of logic and critical thinking for natural science students?
The importance of critical thinking and logic for for natural science students is that it can help to improve their ability to be able to see or identify, examine, and evaluate any form of arguments by other people and they can also make construct arguments by themselves.
How is critical thinking vital in science?Critical thinking is known to be used for scientific inquiry and as such, it helps a good scientist to make great progress in evaluating data that is said to contradicts their current scientific ideas.
So, the importance of critical thinking and logic for for natural science students is that it can help to improve their ability to be able to see or identify, examine, and evaluate any form of arguments by other people and they can also make construct arguments by themselves.
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The triangles below are similar.
S
54°
85°
P
41° R
X 54°
85°
Y
41%
N
ڈے
Which similarity statements describe the relationship between the two triangles? Che
Answer:
answer is a CBA similar to triangle Feb triangle BSE similar to the triangle EDF with similarity statement describe the relationship between the two
Infants and toddlers should spend their time in an environment that is visually [_________].
All infants and toddlers should implored by their parents and guardians to spend their time in a place that is visually appealing.
What are aesthetics?Aesthetics can be defined as a branch of philosophy that deals with nature, beauty and visually appealing sceneries, so as to enhance growth and development in living organisms.
Some examples of aesthetics that are good for infants and toddlers include the following:
LightingColorPaintingsIn conclusion, all infants and toddlers should implored by their parents and guardians to spend their time in a place that is visually appealing.
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Kurt studies men and women’s responses to persuasive advertisements. This is best described as a(n) ______.
The study of men and women’s responses to persuasive advertisements by Kurt is best described as a nonequivalent-control-group design.
What is a persuasive advertisement?A persuasive advertisement can be defined as a type of advertisement that is aimed at convincing customers to purchase a product or service, especially by leveraging on their desires and interests in it.
In this context, we can infer and logically deduce that nonequivalent-control-group design refers to the study of men and women’s responses to persuasive advertisements, as performed by Kurt.
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I need help with solution
Answer:
A
Explanation:
When dealing with comp sci,
the / symbol only cares about the whole number of the answer unless we cast it to a double.
For example,
[tex] \frac{53}{5} = 10[/tex]
in Java,
So here
[tex] \frac{13}{5} = 2[/tex]
Since a is assigned to that,
[tex]a = 2[/tex]
Next, the symbol % acts as the remainder sign
[tex]b\%a[/tex]
Remember b is 5, and a is 2 now, so
[tex]5\%2 = 1[/tex]
So
b=1
The answer here is A