Tuesday
September 1, 2015

Posts by Julie


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 Oh, and I think that it was pretty obvious that the problems were outdated.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

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