# Homework Help

eNotes Homework Help is a way for educators to help students understand their school work. Our experts are here to answer your toughest academic questions! Once it’s posted to our site, your question could help thousands of other students.

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• Math
Note that in arithmetic progression, n refers to the number of terms. If we set n=2, the sum of the two terms (`a_1 ` and `a_2` ) is: `S_n = 3n^2 - n` `S_n = 3(2)^2-2` `S_n=10` Replacing `S_n` with...

Asked by ayushbehl on via web

• Science
We know the following basics. Velocity(V) = (Change in Distance)/(Time) Accelaration(a) = (Change in Velocity)/(Time) Change in distance is denoted by 'y' and time is represented by 't'. `V =...

Asked by spsaroj on via web

• Tennessee Williams
"A Streetcar Named Desire" is set in the tenement slums of New Orleans. The drab, urban setting provides the backdrop against which the internal dynamics involving Blanch, Stella and Stanley take...

Asked by ashleyinc08 on via web

• Science
Kinetic energy of an object which is having mass m and velocity v s given by the following equation. Kinetic energy = 1/2*(mass)(velocity)^2 `= 1/2xxmxxv^2` For this question; `m = 1400kg` `v =...

Asked by roshan-rox on via web

• Global Warming
Global warming is an environmental issue because it affects the natural environments of various parts of the world. It does so in ways that hurt humans directly and in ways that alter...

Asked by avde94 on via web

• Math
Let the length of the third side (i.e. BC) of the triangle be a. Applying cosine rule for triangles, `cosA = (b^2+c^2-a^2)/(2bc)` , `rArra^2 = b^2+c^2-2b*c*cosA` , Putting the values from the given...

Asked by spsaroj on via web

• Great Depression and New Deal
The main way in which the federal government changed during the New Deal was by expanding greatly and expanding its role in American society. Before the New Deal, the federal government was a...

Asked by sandy2313 on via web

• Math
The denominator of `2/(x - 1) - 3/(x + 2)` has to be determined. `2/(x - 1) - 3/(x + 2)` => `(2(x + 2) - 3(x - 1))((x - 1)(x + 2))` => `(2x + 4 - 3x + 3)/((x - 1)(x + 2))` => `(7 -...

Asked by lkballer24 on via web

• Math
Spans are sets, and as such, in order to prove they're equal, we show `w inspan{u,v}<=>w in span{u+2v,u-v}` `` Suppose `w in span{u,v}` . Then there exists real a and b such that `w=au+bv`...

Asked by user6975354 on via web

• Math
You need to find if there exists `intx^(-1) dx` , hence, you should use the following formula that help you to solve the integral, such that: `int 1/x dx = ln |x| + c` You should convert the...

Asked by jackasd13 on via web

Robert Frost lived a fairly inconspicuous life prior to leaving America and travelling to England with his family in 1912. Frost had always wished for a life as a poet, not distracted by other...

Asked by user2305465 on via web

• Law and Politics
Part of the answer to the question of whether a civil suit can be reopened after it has been adjudicated depends upon whether one was the plaintiff or the defendant. If the plaintiff lost, he or...

Asked by leon2112 on via web

• Physics
The power station delivers 600 kW of power at 12000 V to a factory. Power (P) is related to current (I) and voltage (V) by: P = V*I. Substituting the values in the problem 600000 = 12000*I => I...

Asked by lkehoe on via web

• Music
More than the later Baroque music, Renaissance era music was more limited in terms of orchestration. While musical instruments were being invented and refined, there were, quite simply, fewer...

• Health
H. pylori are stomach bacteria that have been linked to stomach ulcers and to gastritis. In the past, it was believed that stress and spicy foods could cause an ulceration of the stomach lining....

Asked by samina4n on via iOS

• The Catcher in the Rye
Almost everything Holden says indicates that he is alienated from those around him, particularly his constant denunciations of "phonies." Indeed, we see in the book's opening paragraphs that Holden...

Asked by danielb77 on via web

• The Bible
The simplest way to explain the Golden Rule is that if you want to be treated well in this world, you should treat others well. If everyone follows this philosophy, everyone will treat others well...

• Interrogation
One technique of follow-ups are "free narratives." An example of a free-narrative question is, "I have been told you were on the roller coaster when the person near you fell onto the tracks. Could...

Asked by kc76384 on via web

• Science
Because the Sun appears as a disk ~1/2° across, Sun shadows are not sharp . This means shadows cast by the Earth & Moon are two-part shadows. The region disc of the Sun is completely blocked...

• anyone lived in a pretty how town
Scansion is the pattern of a poem’s meter – its repeated pattern of feet – stressed, unstressed, etc. While this feature played an important part in poems of earlier periods (Romantic odes,...

Asked by martherus1 on via web

• Math
By Sridharacharya rule the value of `x` for the quadratic equation `ax^2+bx+c=0` is `x={-b+-sqrt(b^2-4ac)}/(2a)` . Now our equation `ax^2=b-x` can be written as `ax^2+x-b=0` So,...

Asked by pahn2 on via web

• Science
We need to convert 22.235 GHz into nm. We know that energy is equal to the wavenumber of radiation (v) times Plank's constant (h): E = hv We also know that energy is equal to Plank's constant (h)...

Asked by kathyyyyyy123 on via web

• Math
In both cases the idea is to solve for one of the variables in terms of the other: (a) The volume of a right cylindrical can is `V=pir^2h` ; in this case we are given V=1000 Since the can is...

Asked by duafarag on via web

• Math
The slope intercept form of a straight line is y=mx+c where m is the slope of the line. So, to solve the slope of the line 3x - 2y - 8= 0 we have to isolate y and write the equation in the above...

Asked by laserthend on via iOS

• Science
The Sievert is a radiological unit for the total quantity of energy absorbed by a variable biological mass that produces a certain given damage. This means that in fact while the dose of radiation...

Asked by maria222 on via web

• Bartleby the Scrivener, A Tale of Wall Street
According to the eNotes Study Guide: "Bartleby the Scrivener" was written by Herman Melville in 1853 and was first published in Putnam's Magazine in the November/December issue of that year....

Asked by bbaker2 on via iOS

• Terrorism Reference
This is an exceedingly difficult term to define. I would define it as violent action that is taken against targets that are not military targets within a war zone and that is aimed at promoting a...

Asked by blopez994 on via web

• Lord of the Flies
In Lord of the Flies, Piggy is the brains behind Ralph's leadership. Without him, Ralph would be an ineffective leader on the island. Piggy is ridiculed by the other boys about his name which he...

Asked by scarlet-victorious-rose on via iOS

• The Darkling Thrush
One aspect of the style of this poem is the extensive use that Hardy makes of personification in the way he bestows human qualities on the landscape. This is achieved in a number of different...

Asked by sallysal1987 on via web

• Math
To get the fourth derivative, switch the function into the form necessary for power rule, then repeatedly find the derivative. `y=1/x^2` `=x^{-2}` now differentiate `{dy}/{dx}=-2x^{-3}` and...

Asked by nikkixoxox on via web

• Math
The revenue per person is \$200 for 50 minutes. If the number of persons is greater than 50 but less than 80 the revenue earned per person is reduced by \$2 to \$198. For x number of people the cost...

Asked by ntretheway on via web

• Political Science
Political scientists say that voters choose whether to vote based on the costs and benefits of voting. The higher the costs relative to the benefits, the less people will vote. Therefore, if...

Asked by alextoloman on via web

• Lord of the Flies
Lord of the Flies, by William Golding, is set on a tropical island. A plane load of English schoolboys is deposited on the island when their airplane is shot down during a skirmish in World War II....

Asked by matthewboyce456 on via web

• History
The significance of the Kennedy Assassination can be seen on two levels. On the historical level, many believe that the Assassination of the President signaled a clear shift in the escalation of...

Asked by yemawe52 on via web

• Great Depression and New Deal
The Supreme Court was hostile to many New Deal programs because it was made up largely of justices who had been appointed by conservative presidents. This meant that they largely shared the common...

Asked by rdaly on via web

• Literature
Satan gets into Eden by converting himself into serpant. There he sings with sweet sound and impresses Eve. When she asked,he told that it was the magic of forbidden fruit.

Asked by curtisj3 on via iOS

• Science
We can use the combine gas law to solve this problem. It is expressed as: `(P_1 V_1)/(T_1) = (P_2 V_2)/(T_2)` P1 = 120kPa = 1.1844 atm V1 = 62 mL = 0.062L T1 = 373 P2 = 80 kPa = 0.7895 atm V2 = 120...

Asked by persianimmortal on via web

• Things Fall Apart
Things Fall Apart is set during the height of European colonization. England is the colonizer relevant to the village of Umuofia. During colonization, England has outlawed the slave trade....

Asked by byrd18 on via web

• People of the Book
Lola and Ruti are both "preservers" and share strength but exhibit it in different ways. Lola, the young Jewish laundress who has been separated from her family, thinks of herself "mule." Like a...

Asked by dat692 on via iOS

• Math
Solve `sinx+sqrt(3)cosx=0` : Wih some algebraic manipulation we can rewrite as an equation involving just tanx: `sinx+sqrt(3)cosx=0` `sinx=-sqrt(3)cosx` Now divide by cosx*...

Asked by princess90000 on via web

• Romanticism
I think that there can be different understandings of critical or "main" features in Romantic poetry. I think that one main feature of Romantic poetry is the emphasis on self. There is a primacy...

Asked by rozh on via web

• Math
To solve for `(2x+5)/(x+4) < 1` , it is important to avoid multiplying/dividing a factor with "x" in it because "x" is unknown, and if it is a negative value, multiplying/dividing by it could...

Asked by wydout on via web

• Math
The graph indicates values between something smaller than 3.2 (but we do not know what) and 3.7. We know therefore that the value of 3.2 may be equal (=) to x (there is a closed in dot beyond it on...

Asked by smith1767 on via web

• Math
The null space or kernel of `A` (m x n) is the set of all vectors `x = (x_1,x_2,...x_n)` (length n) such that `Ax = overline(0)` where `overline(0)` is the zero vector and has length n. Now if ` `...

Asked by jimeeeeeeeeeeeeee on via web

• Math
This fits into the standard form for exponential population growth of the form:`(A-10000) = (a-10000) e^(kt)` --- (i) where a is the initial population, A is the new population, k is a constant and...

Asked by bubbletrea on via web

• Cognitive Psychology
In order for a memory to be saved information must be inputted both into a computer and into the human brain. For a person information is saved through experiences from our environment and are...

Asked by yacel0762 on via web

• Trifles
Susan Glaspell’s one act play Trifles epitomizes the differences between men and women. The time period--set in the early twentieth century’s plight of women prior to gaining the vote and more...

Asked by lovestinks on via web

• The Chocolate War
Brother Leon is the pale, ingratiating, and slyly venomous Assistant Headmaster. Having seriously abused his authority at the school to purchase (way) more candy bars for the annual sale than...

Asked by kbrewer17 on via web

• Math
Solve `(1/2x+3)^2+6=19` : `(1/2x+3)^2+6=19` Subtract 6 from both sides `(1/2x+3)^2=13` Take the square root of both sides `(1/2x+3)=+-sqrt(13)` Subtract 3 from both sides...

Asked by kristenmariebieber on via web