Tuesday

September 1, 2015
Total # Posts: 1,024

**math**

Prove that if a subset C of R*R is symmetric with respect to both the x-axis and y-axis, then it is symmetric with respect to the origin.
*December 7, 2008*

**NEED HELP FAST!!!-SCIENCE**

i need help on scinence homework
*November 9, 2008*

**college chemistry**

If I find the energy emitted by an excited sodium atom when it generates a photon.and then, When i have to find the energy emitted by 1mol of excited sodium atoms at this wvelength do I multiply the first by avogadro's number? 1mol has avogadro number of atoms right?
*November 9, 2008*

**music**

How is math used in music?
*October 24, 2008*

**math**

can someone please help me with my question below
*October 23, 2008*

**math**

can someone please help me, Rob is going to college in Oklahoma which is 680 miles from their his home in Tennessee. He can travel on state highways at 55mph or on the interstate at 70mph. Approximately, how much longer will his trip be if he takes state highways? A. 5 hrs 3 ...
*October 23, 2008*

**college**

What is the derivative of: f(t) = e^{t} \mathrm{sech}(t) f(x)=y^3x (natural log) f(x)=sinh(x)tanh(x) f(x)=8sin(5x)arcsinx)
*October 22, 2008*

**algebra**

how do you solve pattern equations using input and output values
*October 21, 2008*

**Calculus**

1. f(4+h)-f(4)/h 2. (3/(4+h)-2)-(3/2) all over h 3. then im lost
*October 21, 2008*

**Calculus**

find the derivative of f(x)=(3)/(x-2) at x=4
*October 21, 2008*

**physics**

If the density of a medium is 1000 kg/m3 and the propagation speed is 1540 m/s, the impedance is rayls.
*October 19, 2008*

**math**

how to calculate the precentage of calories that come from fat? if for each gram of fat there is nine calories.
*October 13, 2008*

**Business**

Well I guess I came to the wrong place for help. If you didn't know how to answer it maybe you shouldn't have bothered to reply. Oh, and I think that it was pretty obvious that the problems were outdated.
*October 12, 2008*

**Business**

A. Joe won a lottery jackpot that will pay him $12,000 each year for the next ten years. If the market interest rates are currently 12%, how much does the lottery have to invest today to pay out this prize to Joe over the next ten years? B. Mary just deposited $33,000 in an ...
*October 12, 2008*

**Creating a Budget -HSM 220**

I need help with appendix c
*October 10, 2008*

**math**

undo, taking it apart helps you find out where you gut the sum from
*October 7, 2008*

**math**

-4-10= -14 is that right?
*October 7, 2008*

**math**

hi, can someone check these answers for me 1.8-13=-5 2.-4-10=-4 3.5-24=-19 4.7-(-3)=10 5.-2-(-6)=4 6.-18-(-7)=-11 thanks
*October 7, 2008*

**Numerical Analysis**

x 0 2 3 4 y 7 11 28 63 a)_Using these values, use the Lagrange interpolation process to obtain a polynomial of least degree. b)_rearrange the points in the table of a) and find the newton form of the interpolating polynomial. Show that they are the same even though their forms...
*October 6, 2008*

**newton's method #2**

thank you so much, i have alot of questions but i don't always get answered on this site. Is it ok if I can get your contact info. THANKS AGAIN.
*September 28, 2008*

**newton's method #2**

i want to verify that when newton's method is used to compute sqrt(R) (by solving the equation x^2=R), the sequence o iterates is defined by x_(n+1)=.5(x_(n) + (R/x_(n))
*September 28, 2008*

**newton's method**

the iteration formula x_(n+1)=x_(n) - (cos(x_(n)))(sin(x_(n))) + R(cos(x_(n))^2)x_n, where R is a positive constant, was obtained by applying Newton's Method to some function f(x). What was f(x)? What can this formula be used for?
*September 28, 2008*

**Physics**

a.) -8.0m/s b.)1.63s
*September 24, 2008*

**Math**

how do I find the perimeter of a trapezoid
*September 19, 2008*

**math**

What are the machine numbers immediately to the right and left of 2^m? How far is each from 2^m?
*September 14, 2008*

**MATH**

HOW MANY DIFFERENT WAYS CAN THEY GO ON A SHELF PIG,COW,HORSE
*September 9, 2008*

**Sociology**

Who is a real canadian
*September 6, 2008*

**college chemistry**

What si the pH of a solution of 10^-8 M HCl in H2O?
*September 5, 2008*

**Chemistry**

What si the pH of a solution of 10^-8 M HCl in H2O?
*September 5, 2008*

**Ethnic Diversity**

LOL!!! THIS IS REALLy FUNNY I AM a STUDENT OF AXIA AND STUMBLED UPON THIS SIT LOOKING FOR THE saME ANSWERS!!! THANKS FOR THE HELP EVERYONE.
*September 2, 2008*

**making dot arrays**

Hi, It means two rows each with seven dots which wold total 14.
*September 2, 2008*

**math**

Can you help me with my homework in my graduate set theory course?
*August 29, 2008*

**International Business**

Ms.Sue, thank you for the web-site--unfortunately I have already visited that site and can't seem to locate the information I am looking for.
*August 21, 2008*

**International Business**

Are Sony's production facilities centralized or decentralized? (I have been searching a lot of Sony sites and haven't found anything for this question) Thanks
*August 21, 2008*

**Axia College**

I am with Axia college and I haven't had any problems with it so far. I think the thing to remember is, if you start it, don't drop out! This will leave you owing money and causing a lot of problems. I have known ppl who have received their associates degree and went ...
*August 7, 2008*

**Math**

Where is it that tells that cal/g = cal ? And are we talking about calories and grams? What can I say? I am a right brained person :-) Thanks
*August 2, 2008*

**Algebra**

Solve by factoring: x^2 + 7x + 10 = 0 On this specific example my text isn't helping....thanks!
*July 10, 2008*

**Algebra**

Bob thank you. I was actually wondering if anyone could give me specific examples so that I could see how to put the "word problem" into an equation. Thanks again.
*June 23, 2008*

**Algebra**

I just need an example of a real-life application of a quadratic function. Thanks so much!
*June 23, 2008*

**Reseach paper**

Im having a problem with number eight. I can't seem to find it anywhere. I've found all the answers to the other 7 questions. If anyone could help Id appreciate it. Thanks
*June 21, 2008*

**supervision and leadership**

Assume that you are the training supervisor of a large, local retail company. The company has seven department stores in your city. One of your biggest problems is adequately training new salesclerks. Because salesclerks represent your company to the public, the manner in ...
*June 20, 2008*

**Math!!!**

right...so I have ln (x / 5.0 * 10^3) = 0.329 How do I figure out what x is??!
*June 16, 2008*

**Math**

A farmer has determined that a crop of strawberries yields a yearly profit of $1.50 per square yard. If strawberries are planted on a triangular piece of land whose sides are 50 yards, 75 yards, and 100 yards, how much profit, to the nearest hundred dollars, would the farmer ...
*June 9, 2008*

**Micro Economics**

Health maintenance organizations (HMOs): A. are based on the traditional fee-for-service system of paying physicians. B. charge a fixed amount per member, hire many of their own physicians, and provide health services only to members. C. are also known as preferred provider ...
*June 6, 2008*

**honors bio**

The taste of sour cream and yogurt is the result of ____________________________________ fermentation.
*June 1, 2008*

**math**

Nahana takes 2 hours to deliver newspapers to her 125 customers. Angela delivers the same number of newspapers in 3 hours. How long will it take them to deliver the 125 newspapers if they work together? I'm so confused.
*June 1, 2008*

**economics**

What is the formula for caculating GDP deflator?
*April 17, 2008*

**economics**

If a country sells a currency dollar would the exchange rate price be the currency/dollar or dollar/currency and what will the demand be.
*April 16, 2008*

**social science**

What should America Federal Reserve do to preserve the value of the U.S. dollar when there is a situation as a drop in new home sales,with the rise in unsold new property, and a drop in consumers buying goods and services?
*April 15, 2008*

**economics**

Calculate REAL GDP for each year (2005=100). Yr. Price of/Qty. Price of/Qty. socks produced hats produced 2005 $1 100 $2 50 2006 $2 150 $3 100 2007 $3 200 $4 150
*April 15, 2008*

**math**

the answer says 26.86% but i understand what you did.
*April 15, 2008*

**math**

A food processer for $119.50 cash, $5.00 down and $9.00 a month fer 15 months. how would i find the actual yearly rate of interest of this problem?
*April 15, 2008*

**pre calc**

Two forces of 50 and 70 N (newtons) act on an object. The angle between the forces is 40°. Find the magnitude of the resultant and the angle that it makes with the smaller force.
*April 7, 2008*

**chemistry**

it's positive and more. haha i go to irvine too.
*April 7, 2008*

**pre calc**

could you explain the last equations we have not yet learned that.
*March 31, 2008*

**pre calc**

I dont understnad how you found any of the equations.
*March 31, 2008*

**pre calc**

The velocity of an aiplane heading east at 400 knots and a wind velocity of 50 knots northeast. The airplane encounters this wind, show the resultant velocity. What is the resulant speed and direction of the airplane? (the direction is the angle the resultant makes with due ...
*March 31, 2008*

**PLEASE HELP ME MATH**

no you are not doing it right inequalitys do not have a certain answer like for a+4<10 the answer would be less then 5
*March 18, 2008*

**PLEASE HELP ME MATH**

okay sorry , i have no idea how to do them i have tryed but i don't get it
*March 18, 2008*

**PLEASE HELP ME MATH**

someone please help i hav posted my questions like 5 times and no one is answering, can someone please solve these inequalitys 6y+1<19 2r-8>6 b-5>-2 2y+1<-5 4x-6>-10
*March 18, 2008*

**math**

can somebody please solve these inequalitys 3w>30 4n+8<24 6y+1<19 2r-8>6 b-5>-2 2y+1<-5 4x-6>-10 Thanks
*March 18, 2008*

**English**

Why did most of the men keep heading toward the Stephano?
*March 13, 2008*

**Math**

i have a couple questions what are the least common multiples of these number sets (30,65) (66,55,44) (29,58,4)(20,55)(180,252) and 21,16 then i need someone to solve these inequalitys x-7<-8 3t<15 3w>30 4n+8<24 6y+1<19 2r-8>6 b-5>-2 2y+1<-5 4x-6>-10...
*March 10, 2008*

**geography**

How many major oceans are there, what are they and how many are located north of the equator?
*February 29, 2008*

**chemistry**

This is what I have: Volume of Acid (HCL) at equivalence point: 25ml Volume of Base (NaOH) at equivalence point: 15.05ml Am I correct in thinking of it this way: M of Acid x 025 = 0.01505 M of base x 0.01505 vol. of base added Any insight you can give would be greatly ...
*February 27, 2008*

**chemistry**

Titrating an acid/base - 1 M. solution of NaOH into HCL. I have to Calculate the molarity of the HCl from the volumes of acid and base at the equivalence point and the molarity of the NaOH. This is what I have: Volume of Acid (HCL) at equivalence point: 25ml Volume of Base (...
*February 27, 2008*

**chemistry**

sorry - i am having trouble posting the rest of my question - information
*February 27, 2008*

**chemistry**

Titrating an acid/base - 1 M. solution of NaOH into HCL. I have to Calculate the molarity of the HCl from the volumes of acid and base at the equivalence point and the molarity of the NaOH. This is what I have: Volume of Acid (HCL) at equivalence point: 25ml Volume of Base (...
*February 27, 2008*

**chemistry**

Okay, I am doing a lab with titration as well. I have read everything here, and have a question for you as well... if that is okay? The hard part for me is that I don't have a prof. to talk to face to face since my whole class is on-line. Anyway... Titrating an acid/base...
*February 27, 2008*

**Geometry - Proofs**

Given: Line cd is the perdendicular bisector of line ab e is on line cd Prove EB=ea
*February 14, 2008*

**science**

do skeletal muscle cells have a lysosome, centrioles, cilia ? I have read a lot of website but these are not mentioned!
*February 14, 2008*

**bio**

do skeletal muscle cells have cilia or flagellum
*February 12, 2008*

**chemistry**

So, if I did everything right, I should end up with 98.21 g and 0.09821 kg (with significant figures)?
*February 12, 2008*

**chemistry**

Should I convert the 1.25 liters to mL?
*February 12, 2008*

**chemistry**

Calculate how much acetone (in grams and in kilograms) needs to be weighed to assure that you placed 1.25 liters of acetone inside a bottle that needs to be shipped to a chemical laboratory. For the density use 0.7857 g/mL.
*February 12, 2008*

**science**

I did this experiment below with 6% molasses, 12%, and 25% molasses solution and I dont know If I should do a bar or line graph. Yeast Populations Student Materials Yeast is a single-cell fungus that produces carbon dioxide as a byproduct of cellular respiration. The release ...
*February 10, 2008*

**research paper**

thank you so much
*February 10, 2008*

**research paper**

our team has taken your advice on researching on the internet and libraries, yet we are still unable to find: What benefits have American corporations and the American economy gained through economic involvement with China and India? any help would be greatly appreciated.
*February 10, 2008*

**research paper**

My class is writing a paper on China and India and I cant seem to find these topics. although a communist country, how has china opened its boarders to international commerce? Describe the benefits China and India have gained through their presences in the international ...
*February 10, 2008*

**Pharmocology**

Is this true? Water soluble chemicals tend to accumulate in the sediment in the bottom of rivers.
*February 4, 2008*

**intergers**

sonia has $235 in her savinings account she withdrawls $45 dollars, there is now a $190 left in her accont right?
*January 28, 2008*

**Math intergers**

oh okay thats what i thought just making sure
*January 28, 2008*

**Math intergers**

a rolloercoater begins at 90 feet abouve ground level.then it desends 105 feet, find the height of the coaster after the first descent
*January 28, 2008*

**pre calc**

its 2.4
*January 21, 2008*

**Math**

Thanks
*January 20, 2008*

**Math**

Use distributive property to write each expression as an equivalent expression then evaluate each one 1.3(4+5) 2.(2+8)6 3.4(9-6) 4.8(6-3) 5.5(200-50) 6.20(3+6) 7.(20-5)8 8.50(8+2) 9.15(1,000-200) 10.3(2,000+400) 11.12(1,000+10) 12.7(1,000-50) Any help would be apriceated
*January 20, 2008*

**science**

i was wondering if any one could help me, for the science fair my teacher gave me a project that i am having some trouble with. It is to make a clock powered by water, i have the materials but don't acually know how i should put it thogether, the materials are a medium ...
*January 19, 2008*

**math help**

An engineer is required to survey a nonrectangluar plot of land but is unable to measure side UT directly. The followng data are taken; RU=130 meters, RS=12m ST=90m, angle RST=115, and angle RUT=100. Calculate the length of side UT and the area of the plot. The picture is a ...
*January 12, 2008*

**Sociology**

How does self-concept influence communication?
*January 10, 2008*

**speech class**

I have to do a speech about johnny depp next week in my speech class and i have to make a visual aid. I was wondering if you can give me ideas on what i can put on a poster other than pictures of him. Is there any other visual aids I can try other than posters. As far as the ...
*January 10, 2008*

**Science**

What is an example of a solid and a gas solution
*January 8, 2008*

**chemistry**

What is the is product of Nickel(II) nitrate+sodium phosphate This is what I have: Ni(NO3)2+Na3PO4----> can you help me on the resultant equation please
*January 8, 2008*

**chemistry**

when writing chemical equations, for example, next to oxygen I have to write (g) for gas and next to other different chemicals I have to write (aq) for aqueous. What do I write next to H2O?
*January 8, 2008*

**calculus**

given y = 4x-3 find the minimum value of xy. find the rate of change of xy with respect to x. find the rate of change of xy with respect to y.
*January 6, 2008*

**calculus**

let x^2 + 4xy + y^2 + 3 = 0 are there any points on the curve where the tangent is horizontal or vertical? justify your answer.
*January 6, 2008*

**US history**

1. Andrew Jackson exerted the power of the presidency by a. allowing South Carolina to secede from the Union. b. depositing federal funds in the National Bank. c. refusing to be bound by Supreme Court decisions. d. vetoing the Force Act of 1833. 2. The depression of 1837 had ...
*December 29, 2007*

**English**

Well, the practice test is automatically scored and it keeps telling me I'm wrong. I've entered it as many ways as I can for over a week (I'm practicing twice daily), and I can't get it right!!
*December 7, 2007*

**English**

Thank you, I'll give it a try!
*December 7, 2007*

**English**

At McDonald's, we devoured four Big Macs, three orders of french fries, and five Coca-Colas for lunch.
*December 7, 2007*

**English**

How do you write the following sentence grammatically correct: At mcdonalds we devoured 4 big macs three orders of french fries and five coca colas for lunch.
*December 7, 2007*