Friday

August 1, 2014

August 1, 2014

Total # Posts: 196

**calculus**

rotate the axes and eliminate the xy term of 3(x^2)+2xy+3(y^2)-8

**calculus**

rotate the axes and eliminate the xy term of 3(x^2)+2xy+3(y^2)-8

**physics**

A hallway display of energy is constructed in which several people pull on a rope that lifts a block 1.15 m. The display indicates that 1.05 J of work is done. What is the mass of the block?

**physics**

A hallway display of energy is constructed in which several people pull on a rope that lifts a block 1.15 m. The display indicates that 1.05 J of work is done. What is the mass of the block?

**Chemistry**

If .002 L of .650 M NaOH are added to 1.0 L of 0.9 M CaCl2 what is the value of the reaction quotient and will a precipitate form? I keep getting 0.0011 because I thought the answer was [Ca+][OH-] but that's not correct, I think I'm missing a final step

**Chemistry**

Sorry I meant Ca+ not Cu (typo) and Q value as is quotient reaction value. Q = K at equilibrium, it measures if a precipitate will form

**Chemistry**

One other question that I cannot figure out what I'm doing wrong is this.. If .002 L of .650 M NaOH are added to 1.0 L of 0.9 M CaCl2 what is the Q value? I keep getting 0.0011 because I thought the answer was [Cu+][OH-] but that's not correct

**Chemistry**

Got it, thank you!

**Chemistry**

How many grams of BaSO4 can dissolve in 1.5 L of a 0.010 M solution of Na2SO4? Ksp= 1.1 x 10^-10 I thought the answer was 1.1x10^-8 M then multiply by the molar mass to get the amount of grams but my answer isn't correct. PLEASE HELP!

**physics**

Sphere A: Is Rubber it is an insulator, and that means the electrons are all in there one space. Thats the dark spots you were talking about. Sphere B: Is Copper and it is a conductor; the electrons are all over the sphere. As is the opposite to the sphere A. And this conclude...

**Pre-Cal**

120 pi radians

**Language**

we are reading a book called the children of wilesden lane and i dont have the book so i dont know what "the last paragraph of chapter three" is PLEASE HELP!!!!

**poetry**

i need help on thinking of a acrostic poem for DOLPHIN.

**poetry**

i need help on making a TROCHAIC poem for a project. i really need help

**math**

it will take 8 days for the snail to reach the top. 5-3+5-3+5-3+5-3+5-3+5-3+5-3+5-3= 16

**poetry**

oh it's okay. thank you :)

**poetry**

i need some examples of a: metaphor, personification, and trochee. help please

**poerty**

i need some examples of a metaphor, personification, and trochee. help please

**math**

so 3*7=23+1=24 24 over3 = 8?

**math**

i need help to find out 7 1/3 (seven and one third) is in a decimal? please help me.

**Math**

What is the product of 3y2 and 4y5?

**math**

Sam has a savings account that increased in value over a twelve month period from $8765.00 to $9006.06. He made no deposits or withdrwals in that time. What percent interest did he recieve for the 12 month period?

**government**

My teacher told me and my class to write a essay on why we would want to live in a capitalist government but I have no idea what to write can you help?

**math**

about 39

**9th grade**

how do i solve 3y-4+3x-5x+2 and solve for x and y

**chemistry**

Why does the total energy (Ke+Pe) decrease with height?

**social studies**

What is the social triangle of the woodland cree?

**math**

Thomas and Samantha work on weekends and holidays doing odd jobs around the neighborhood. they are each paid by the day, not the hour. they each earn the sme whole number of dollars per day. last month thomas earned $ 184 and samantha earned $ 207. how many days did each perso...

**math**

i am using U.S. gallons my teacher said that 1 liter = approx. 1.06 quart. Can I just divide 2000 by 4?

**math**

2000 liters = about how many gallons?

**social studies**

what si the defonition to duma?

**Math**

reduce simplify a fraction to its lowest terms 10/12

**Algebra II**

Find the LCM of f(x) = 4(x - 1)^2 (x^2 + 6x + 5) and g(x) = 10(x - 1) (x + 2) * (x^2 + 7x + 10)

**algebra II**

i got the same answer but used the quadratic :) thank you for all your help everyone!

**algebra II**

so should i just multiply that all out and then plug it in?

**algebra II**

I'm quite clueless as to how to solve this. I know the quadratic equation but am not sure how to get this equation into the format to plug in to the quadratic... Solve the quadratic equation using the formula [1/(1+x)]-[1/(3-x)]=(6/35) Show your work

**algebra II**

Solve the quadratic equation 12x^2 + 36a^2= 43ax by factorization Show your work

**Algebra 2**

does anyone know what (4 - 6i)/(4 + 6i) = ?

**math**

how do i list fractions from least to greatest without the same denomonator?

**physics**

Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 1.5e6 m/s. What is the distance of closest approach? PLEASE HELP! im very confused.

**Human Geography (Religion)**

So I have to do a project on the Cultural Interaction in Religion. My religion is Sikhism. Here are the questions I'm supposed to answer in my presentation: How does the religion impact other aspects of culture? How does this religious faith influence the economic, dietary...

**math help please!!**

thank you!

**math help please!!**

simplify (5x^7)^4

**physics**

a force of 50 N directed at an angle of 45 from the horizontal pulls a 70 kg sled across a frictionless pond. the acceleration of the sled is most nearly

**mathj**

thanks

**mathj**

inverse of (x+2)^2 is it sqrt of (x) - 2

**math**

thats an opinion

**math**

solve for t 13e^(.081t)=25e^(.032t)

**history**

reparations

**math**

How do you write out the number 2.536? Thanks. Maddie

**math**

How do you write 2.536 in words? I've never seen it before. Thanks! Maddie

**Mathematics**

Pam and Tim decide to start saving money for their daughter's college education. They open a college savings plan with a 400 initial investment and next month start to make monthly deposits of 100. If the account pays 8.00% compounded monthly, how much will the account be ...

**Mathematics**

An investor wants to know the amount she should pay for an oil well expected to yield an annual return of 30000 for the next 30 years, after which the well will be dry. Find the amount she should pay to yield a 14% annual return if a sinking fund earns 10% annually. Round the ...

**Mathematics**

Jake's car needs repairs but he is short of cash. A payday loan company charges a fee of 46 for a two week loan of 250. This is equivalent to a discounted loan with proceeds of 250 and a loan amount of 296. What is the per annum interest rate?

**Mathematics**

A set of Egyptian cotton sheets has a list price of 130.00 but is on sale for 84.50. By what percent is the list price reduced

**math**

m divided by -12=5

**help me**

4, because if a is 3 and b is 5, 1) 3/5=.6, but 5/3=1.66, 2) 3-5=-2, 5-3=2, 3) 3+(10)=13, 5+(6)=11, 4) 3+5=8, 5+3=8

**help me plz**

sure, for example take the variables a and b to represent numbers. a+b = b+a = a In this case b = 0.

**math urgent**

additive identity states the a+b=b+a=a when b is 0.

**physics (emergency!)**

I tried that but the answer I came up with was incorrect... Are you sure thats the right way to solve this?

**physics (emergency!)**

how do you find the kinetic energy though?

**physics (emergency!)**

How much work is required to stop an electron (m = 9.11 10-31 kg) which is moving with a speed of 1.99 106 m/s?

**science**

global warming could cause the melting of glaciers and increase the strength of _______

**Math**

So i am working on factors, multiples, and divi

**AP Human Geography**

For an assignment, I have to use this data sheet to do a few things with the data it gives me. To get to it, go to PRB. org, click on 2008 World Population Data Sheet, and then click on 2008 World Population Data Sheet again I'm stuck in this: Construct a bar chart showing...

**Ap Lit and Composition**

ok so just one question: if you want to write a sentence on it, would you be like: The author uses pathos and ethos in this quote, "asdifjaosdf" to suggest blah blah?

**Ap Lit and Composition**

My teacher always asks me to comment on diction, style, tone, rhetoric.... but i dont know how to do this, i mean i know what they are, i just dont know how to formulate an essay on this? can you give me a sentence that sortof depicts what this is?

**Accounting**

Interest on a $20000 one-year 10 percent note payable dated October 1 2007 was not recorded. The 10 percent interest is payable on the maturity date of the noteWhat is the interest income

**physics**

how do you find the verticle component of velocity of a projectile just as it strikes the ground?

**Accounting**

On January 1, 2006 two individuals invested 510000 each to form Steve Corporation. Steve had total revenues of 240000 during 2006 and 250000 during 2007. Total expenses for the same periods were 120000 and 150000. Cash dividends paid out to stockholders totaled 22000 in 2006 a...

**Drivers Ed.**

Well, I'm not trying to get my drivers license or anything. I'm trying to finish the review for my Final in my drivers ed class, and out of the 112 questions these are the only ones that I couldn't get.

**Drivers Ed.**

What conditions determine an open rear zone? What are the three stopping positions? When turning, where should your last check be? When must you check your mirrors? When turning left, what should your searching procedure look like? When entering a roadway from an alley, privat...

**Math**

solve 3(4)^x for x=2.3 Do I do the 3x4 part first, or do I raise 4 to the 2.3?

**Science**

Does anyone have the spectra for sulfur? In class we did this using a flame test, where we put the sulfur in a flame over a bunsen burner and used a spectra scope to find sulfur's spectra, but I seem to have lost this data. I've been looking on the web, but I don't...

**Physics**

What about the answer to #3?

**Global Studies**

So I have to do a project on the 3 regions of Nigeria. I can't find any information on Eastern Nigeria. All I have to do is right a paragraph of that region and highlight and important features of the region. I was wondering if anyone had any information on Eastern Nigeria...

**math riddle ALGEBRA WITH PIZZAZZ**

#150, did you hear about... help me

**oceanography**

How do temperature and salinity vary in ocean basins?

**pre-al**

5(2x-3)+8=9 how do you solve this?

**Science**

Weren't there more then one?

**Science**

What were the undiscovered elements of Mendeleev's periodic table?

**Social Studies**

What form of government does Ireland have? Is it stable? Do they have any allies? I've been surfing the web for a really long time now, searching for the answers to these questions. I'm really stuck...

**Social Studies**

What are the immigration and emigration issues in Ireland and what are some population issues that Ireland is dealing with?

**Chemistry**

Cite the three pieces of evidence that caused Rutherford to conclude that the atom had a tiny, positively charged center (nucleus).

**Chemistry**

Could anybody simply explain how exactly Joseph Thomson discovered that atoms were not "indivisible" and that they were actually made of subatomic particles? (electrons) I've been having trouble understanding how exactly it happened, and everything on the interne...

**Science**

Well he said that we aren't allowed to group the months of the year by the amount of days in the month or the amount of letters in the month's name.

**Science**

In science, my teacher gave out an assignment where we had to group the months of the year, kind of like the seasons. I have absolutely no ideas, and was wondering if anyone else had some input on the assignment.

**math**

what is an example of a commutative propery of addition

**Social Studies**

What is the meaning of the 16th Amendment?

**algebra 2(check)**

1)Choose the correct description of the system of equations:2x+3y=10 and 4x+6y=20. I got consistent/dependent 2)The first equation of the system is multiplied by 2. By what number would you multiply the second equation to eliminate the x variable by adding? 6x-5y=21 4x+7y=15 I...

**Algebra**

To solve the system of equations, which expression could be substituted for x into the first equation? 3x-5y=14 x+4y=10 a)10-4y b)4y+10 c)(1/4)x+(5/2) d)(-1/4)x+(5/2) I have another problem just like this one so if you could explain how to solve this one I can (hopefully) solv...

**math**

How do you solve system of equations and tell if they're consistant and independant,consistant and dependent,and inconsistant? If you find no solutions then the system is inconsistent. Suppose you have N variables and M equations (N larger than or equal to M). Then, if you...

**geography**

an inlet (pretty sure...)

**Government**

What does the fact that "aliens" are generally are not allowed to vote show about American beliefs? I looked all through my book but it doesnt say anything about voting rights of aliens. Can someone please help me(= There are no voting rights for those who are not ci...

**geometry**

RAY!!!!!!

**word unscramble**

kobnid it has something to do with sewing or something!!!HELP!!