# 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.

### Showing All Questions Unanswered Answered Popular Recommended in All Subjects Literature History Science Math Arts Business Social Sciences Law and Politics Health Religion Other

• Math
Anything in the span of `vecv` and `vecw` is of the form `a[[1],[4],[2]]+b[[3],[1],[-1]]=[[a+3b],[4a+b],[2a-b]],` so `[[x],[y],[z]]` will be in this span if and only if `x=a+3b,` `y=4a+b,` and...

Asked by bobby9901 on via web

• Science
In order to solve for this, first we have to do the word equation for the reaction. `Copper + 6 M Nitric acid -> unknown blue-colo red solution + Nitric O x ide gas` Solution of Copper (II)...

Asked by roshan-rox on via web

• Math
`e^(-2x)=3x^2` Let us define f(x) as `f(x)=e^(-2x)-3x^2` `f'(x)=-2e^(-2x)-6x` `f''(x)=4e^(-2x)-6` `f'''(x)=-8e^(-2x)` `f^n(x)=(-2)^n e^(-2x)` Expand in Taylor series about x=0 ,we have...

Asked by juniorsilvamath on via web

• Cinema
In general, Dee does not have many advantages to her side in the narrative. It is for this reason that the demonstration of her fervent passion and sense of resistance is so compelling. If Dee...

• Math
In trigonometry 180 degree angle is represented by a angle of pi radians. In other words Radian describes the plane angle subtended by a circular arc as the length of the arc divided by the radius...

Asked by cenicienta on via web

• Social Sciences
The simple answer to this is that more people would vote if voting were required by law. But that is most likely not why you are being asked this question. Instead, you are being asked if this...

Asked by shortchef1 on via web

• World War II
First, we have to understand that this is a subjective question. There is no objective way to determine what is or is not moral. Second, in order to answer this, we must in some way define what we...

Asked by mariajosemascaro on via web

• History
While it is certainly possible to see John Brown in both ways, I am more inclined to see him as a murderer than as a martyr. Fanaticism is not typically justified, even in a good cause. John Brown...

Asked by smittyc on via web

• History
There were a number of movements that were prominent to one degree or another during the 1960s. Let us look at some of the ones that were most prominent. One of the most important movements of...

Asked by sandy2313 on via web

• Science
We can use the combined gas law to solve this problem. It is expressed as: `(P_1 V_1)/(T_1) = (P_2 V_2)/(T_2)` P1 = 90 kPa = 0.8883 atm V1 = 450 mL = 0.45 L T1 = 17 + 273.15 = 290.15 K P2 = 110 kPa...

Asked by persianimmortal on via web

• Math
The value of `lim_(x->oo)sqrt(4x^2+1)/(x+1)` has to be determined. Substituting `x = oo` gives the indeterminate form `oo/oo` . This allows us to use l'Hopital's rule and substitute the...

Asked by user1928785 on via web

• Math
The height of water in the harbor can be modeled by the function `h(t) = 10+4*sin((pi/10)*(t-2))` , where t is the time in hours. The minimum value of a sine function sin(x) = -1 when `x =...

Asked by rosey-girl on via web

• The Misanthrope
The similarities between Nora in A Doll's House and Alceste inThe Misanthrope can be categorized in the following three aspects: characters versus their society purpose versus misunderstanding...

Asked by lovestinks on via web

• The Poetry of Hopkins
One way that it might be said that Hopkins corrects, or provides answers for, the defects of Romantic poetry as illustrated by "God's Grandeur" is by tying metaphysical religious themes into the...

Asked by lifeinlove on via web

• Math
`I =int 55x(lnx)^2 dx= 55 int x(lnx)^2dx` To solve using integration by parts, use the formula `int udv =uv -vdu` . So let, `u=(lnx)^2` and `dv= xdx`...

Asked by mavimalik on via web

• The Giver
The supposed idyllic world of The Giver is characterized by "sameness." The sky is a greyish color when there really is no color; the climate is controlled. With no real sunshine or rain or weather...

Asked by crazymamie on via web

• Silent Spring
Rachel Carson wrote about the harmful effect of pesticides on the environment and its effect on people and animals, particularly birds. The title Silent Spring is meant to evoke an emotional...

Asked by tourlay99 on via web

• Math
`lim_(x->3)(f(x)-2)/(x-2)=4` Now we use the following rules for limits: `lim_(x->a)(f(x))/(g(x))=(lim_(x->a)f(x))/(lim_(x->a)g(x))` `lim_(x->a)(f(x) pm g(x))=lim_(x->a)f(x) pm...

Asked by cjh2571 on via web

• Science
Lack was born in London and educated at Gresham's School, Holt, Norfolk, and Magdalene College, Cambridge, where he studied Natural Sciences. He was the oldest of four children of Harry Lambert...

Asked by walker-shyanne on via web

• History
For centuries, the area that is now Israel had been controlled by the Ottoman Empire. In World War I, the Ottoman Empire took the side of Germany and the Central Powers. For this reason, it lost...

Asked by user513675 on via web

If this epistolary narrative is confined to Part 1, note the differences between the outside world and the Lady's prison inside. The outside world is described in vibrant terms: "fields of barley...

Asked by rainbow224 on via web

• Math
Each interior angle of n regular polygone is `angle s=((n-2)xx180)/n` (i) since exterior angel of given polygone is `72^o` `` Therefore corresponding interior angle is =`180-72=108^o`...

Asked by tjjavid on via web

• Math
We have given `3x^2+12x+39=0` factor out 3 because HCF(3,12,39)=3 `x^2+4x+13=0` We wish to write it as `A^2+2AB+B^2=(A+B)^2` Thus x^2+4x+4+9=0 (x+2)^2=-9 (x+2)^2= 9i^2 Taking square root ,both...

Asked by kristenmariebieber on via web

• Dramshop Acts
No, these types of laws should not be extended to other contexts. A dramshop act is one which holds an establishment responsible if it sells alcohol to a person who is already drunk. The reason...

Asked by kisstopher603 on via web

• Ecology
Wetlands are a distinct ecosystem that consist of low-lying, flooded lands with lots of still, standing water. They can be either naturally occurring or man-made. One important aspect of wetlands...

Asked by monique06 on via web

• Social Sciences
The contracts that were made between the large American automakers and the UAW in years past continue to weigh the American automakers (often known as the “big three”) down because they require...

Asked by checkyyy on via web

• History
Hitler started to rule Germany because he was appointed chancellor. In the German political system of the time, there was a President who was the head of state. That person had the right to...

Asked by shruthiblues27 on via web

• Science
The strength of an acid refers to the tendency of a certain acid to lose a proton. One of the main differences between a strong and a weak acid is the degree of dissociation in water. Strong acids...

Asked by homework-help on via web

• Math
Let `u=(u_1,u_2,u_3),v=(v_1,v_2,v_3),w=(w_1,w_2,w_3)` . Now `u.(vxxw)=det[[u_1,u_2,u_3],[v_1,v_2,v_3],[w_1,w_2,w_3]]` . By given problem, `u.(vxxw)=20` . We want to find `u.(uxxw)` . Now,...

Asked by swimmers on via web

• The Awakening
In The Awakening the theme of individuality is brought up through the discoveries that Edna Pontellier encounters along the way of trying to find herself as a person and, most importantly, as a...

Asked by taxi889 on via web

• Rights of Animals, The
Ethically speaking, we should be humane to animals because they are typically completely (or almost completely) at our mercy. We have an obligation to treat them in ways that do not constitute an...

Asked by idrees2152 on via web

• Math
For 1 complete job, it takes 9 hour for Isabella to finish it alone.So, her rate is: `Rate=(Work d o n e)/(time)` `R_I=1/9` Since Matthew works three times as fast as compared to Isabella, then his...

Asked by loishy on via web

• Math
The t- statistic can be calculated for the given data sets in the following way (you can check the results from the calculations done in the given websites): Step 1: Stating the hypotheses Null...

Asked by lonestargirl56 on via web

• Science
The standard breath analyzer test used by law enforcement to measure the blood alcohol content actually measures the amount of ethanol vapor in an exhaled breath which can then be used to estimate...

Asked by gillianpierre on via web

• Sharon Pollock
In Walsh by Sharon Pollock, our sympathies are shaped by James Walsh's dilemmas—his attempts to align his ethics with the demands of his career; his interactions with Sitting Bull; his...

Asked by pashti on via web

• Math
A quadratic function, in graph form, is a parabola. A quadratic function can appear in three formats, the standard form of which is `f(x)=ax^2+bx+c` In standard form this equation `x^2+y=4+x^2`...

Asked by mint18 on via iOS

• Math
We have given `int2x(x^2+1)^10dx` `substitute` `x^2+1=t` `2xdx=dt` `int2x(x^2+1)dx=intt^10dt` `=int1*t^10dt` `=1*t^(10+1)/(10+1)-int((d)/(dt)(1))*t^11/11dt` `=t^11/11-int0 dt` `=t^11/11+c` consider...

Asked by chamenviraj on via web

• Math
The only reference that I know of that uses `iota` as a specific value is that sometimes the imaginary unit is denoted `iota` , whereas it is usually denoted i. If you are asking about the...

Asked by shewa55 on via web

• Math
From first principles the derivative of a function f(x) is given by: `f'(x) = lim_(h->0)(f(x+h) - f(x))/h.` In the case of a polynomial f(x) = ax^n + bx^(n - 1)... to determine the derivative...

Asked by lxsptter on via web

• Dreams from My Father
InDreams from My Father,Barack Obama is the main character. The story centers around his early life and career and it is his inner conflict over the role race and heritage will play in his life...

Asked by user6661657 on via web

• Math
You need to use the definition of null space of matrix, such that: `A*N(A) = 0` `N(A)` represents the set of vectors such that `A*N(A) = 0` Performing the multiplication yields:...

Asked by chocobob on via web

• Math
You may find the row space R(A) considering all the possible combinations of row vectors of matrix A. You need to identify the row vectors of matrix A, such that: `r_1 = (2,1,3); r_2 = (4,1,4)`...

Asked by mrbest55 on via web

• Cat on a Hot Tin Roof
The presence of disease and death can be seen throughout Act I. The most demonstrative way that this is evident would be with Big Daddy, himself. There is sickness evident, even though he is...

Asked by melissahewis1 on via web

• Math
Instead of showing it for this particular case, it is actually less work to prove that the null space and row space are orthogonal complements (perpendicular) for any matrix `A.` To do this,...

Asked by hockeyfan54 on via web

• Science
For simplicity we assume that all gasses behave as ideal gasses when it comes to the gas laws (PV=nRT). This assumes that individual gas particles have no mass and no intermolecular forces exist...

Asked by shanezehra on via web

• Poetry
Patel describes the process of killing a tree as something deliberate and thorough in its intent. Patel's rendering is not murder as a rash and thoughtless act. Rather, it is shown to be a...

Asked by asithkhosla on via iOS

• Aztec Empire
There are at least two ways to answer this question. First, we can say that the Aztecs were the group of people who controlled an empire that was centered on the Valley of Mexico at the time that...

Asked by srvll on via iOS

• Social Sciences
In political science, the term “hard money” refers to money that is (in the United States) given directly to candidates to use for their own campaigns as they see fit. This is money that the...

Asked by checkyyy on via web

• Law and Politics
It is difficult, and perilous, to attempt to prosecute individuals or groups solely on the basis of their association. The right to peaceful assembly and the freedom of speech protect types of...

Asked by user5376306 on via web