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September 1, 2014

Posts by Lauren


Total # Posts: 1,502

4th grade
if a=11 b=2 c=18 then what does a+c-b=?
October 8, 2009

Calculus
wow im sorry, this was a lot easier than i thought
October 6, 2009

Calculus
y = ln(3x+5), then d^2y/dx^2 = a. 3/(3x+5) b. 3/((3x+5)^2) c. 9/((3x+5)^2) d. -9/((3x+5)^2) e. -3/((3x+5)^2)
October 6, 2009

Calculus
f(x) = sq.root(e^2x+1), then f'(0)= a. -sq.root(2)/2 b. sq.root(2)/4 c. sq.root(2)/2 d. 1 e. sq.root(2)
October 6, 2009

Math
Pages are 30 and 31 30x31=930
October 5, 2009

AP Physics Halley's Comet
Halley's expected return....
October 2, 2009

AP Physics Halley's Comet
Yes, it is still in the solar system. Halley is one of those comets with orbits in the planetary system. It's periodic returns demonstrates that is was in orbit around the sun and that some comets are members of the solar system. Halley's expected reurn to the inner ...
October 2, 2009

math
You must earn $115 $292 +193 + 115=600 $600 divided by 3= 200
October 1, 2009

math
5 out of 26 for drawing a vowel
October 1, 2009

math
It is 126 Least common multiple is the lowest number that can be divided by any two or more numbers evenly
October 1, 2009

french help please=)
To Mk- he was my one and only dog and he was small and weak
September 29, 2009

french help please=)
urg. i dont understand why my accents are not working=/
September 29, 2009

french help please=)
Hmm.. okay. I had to use another laptop hopefully this will work. J'adore les animaux, surtout les chiens. Il y a deux ans quand j'ai rencontré mon premier and seulement chien. Il a été petit et faible. Il a un gros nezmais les fourrure bruns et ...
September 29, 2009

french help please=)
Can someone see if I wrote this correctly? J’adore les animaux, surtout les chiens. Il y a deux ans, quand j'ai rencontré mon premier et seulement chien. Il a été très petit et faible. Il a un gros nez mais les très petits yeux noirs...
September 29, 2009

math
6 X 2= 12. 2/6=1/3.
September 28, 2009

math
how do I do 84m 15cm to centimeters?
September 28, 2009

Science!
CuCO3 + O2 -> CuO + CO2 hydrogen peroxide + manganese dioxide -> hydrogen + oxygen copper (II) sulfate pentahydrate + oxygen -> copper oxide + sulfur trioxide + dihydrogen monoxide What are the balanced queations for these?
September 28, 2009

math
what is 38.29 seconds in decimal form?
September 23, 2009

Chemistry
iaj;ldsk
September 19, 2009

Science -- same q, dont reply if you dont know!
Thank you so much! I appreciate it :)
September 17, 2009

Science -- same q, dont reply if you dont know!
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
September 17, 2009

Science
Alright, so I'm doing a lab report, and I have this word equation: iron (III) nitrate + sodium hydroxide --> iron (III) hydroxide + sodium nitrate I would like to turn this into a balanced equation, and I have: Fe(NO3)3(l) + 3NaOH(l) --> Fe(OH)3(s) +3NaNO3(l) (the ...
September 17, 2009

physics
greg
September 15, 2009

Calculus
solve: 14. ln(1/x) = -2 16. lnx + ln(x+2) = ln(x+6) 22. ln(lnx) = 1
September 14, 2009

9th grade, SOSE
Was world war two hitlers war?? if so why.
September 13, 2009

Calculus
a particle starts at time t = 0 and moves along the x axis so that its position at any time t>= 0 is given by x(t) = ((t-1)^3)(2t-3) a.find the velocity of the particle at any time t>= 0 b. for what values of t is the velocity of the particle negative? c. find the value ...
September 10, 2009

math
Find the representation of the number 256 in the following bases: a. base six b. base twelve c. base two I get how to write the number of objects as a base(whatever), but I think this is asking me to start from the end number and work backwards. I really need help. I have two ...
September 3, 2009

world history
Source-(The event which finally triggered war came on 28th June in Sarajevo, a town in the Austro-Hungarian Provence of Bosnia) How important was the assassinations of the Archduke Franz Ferdinand and his wife in causing the First World War? (5 marks)
September 2, 2009

Math
What do they call the international hula hoop championships?
September 1, 2009

Math
What do they call the international hula hoop championships?
September 1, 2009

French part 3
Could you please check these thanks Directions: Indicate whether each of the following statments is true or false. 1. Il faut passer par le controle de sécurité avant le vol. Answer: vrai 2. On peut laisser ses bagages à main dans le couloir pendant le vol...
August 30, 2009

French part 2
Could you check these please thanks Directions: Choose the correct verb to complete each phrase. Here are the verbs you can choose: passer, enregistrer, sortir, remplir, servir, choisir, and attacher. 1. -------- une place coté couloir. Answer: Choisir 2. ------- par le...
August 30, 2009

French
could you please check these thanks. Directions: Indicate whether each of the following statements are true or false. 1. Avant de monter en avion, on passer par le controle de sécurité. Answer: Vrai 2. On sert un repas pendant un vol transatlantique. Answer: Faux...
August 30, 2009

quick science question
What are some ways in which genetics collect samples to test for disorders?
August 28, 2009

Geography
Five Geographic Themes: What is the place of Moscow, Russia?
August 23, 2009

math!
hi im lauren and i have a big math test tomorrow(7th grade) and i need 2 know wht interval means. And i need the expalnation 2 be so simple tht a little kid can understand it. lol. Can someone answer like in the next 10 mins plz! thx!! hurry peeps!!lol
August 20, 2009

english
Which of the following statements BEST explains why "I Am Offering This Poem" is considered a lyric poem? A. It is a simple poem that tells a story. B. It is a tragic poem that teaches a lesson. C. It is a short poem that expresses strong emotion. D. It is a rhyming ...
July 30, 2009

healthcare reimbursement methologies from Penn Fos
Does anyone have the answers to exam #40974000?
July 1, 2009

Health
How are hospitals that are excluded from the Medicare acute care PPS paid? Are they based on reasonable costs, fee schedules, global payments, or bundled payments?
June 26, 2009

Health
Who is responsible for paying $250 major medical insurance before a company assumes liability?
June 22, 2009

Music
What 18th century composer wrote music primarily for the harp?
June 9, 2009

history
The major conflict(s) that the christian world had with the muslims during the middle ages was/were due to: A:the desire to spread the principiles of the koran B:the desire to form a government, ecenomic, and social system C: religious inspiration to wage war and acquire new ...
May 30, 2009

geometry
A regular polygon has 12 sides. What is the measure of each EXTERIOR angle?
May 17, 2009

algebra
-2 x 7 = -3 + t + 24 solution?
April 27, 2009

Science
How is nuclear radiation produced? What are 3 types of radioactive decay and how do they work? Thanks!
April 24, 2009

Earth science
How long an exposure would a photographer need to photograph star trails that are complete circles? Why? The star Sirius is 4.3 light years from Earth. Determine the distance to Sirius in km and in astronomical units. THe moon's average distance from Earth is about 380,000...
April 19, 2009

Earth Science
Using Kepler's equal area law, explain why the speed of an object in a perfectly circular orbit is constant. HELP!!!!!!!!!!!!!!
April 19, 2009

Calculus
Never mind, I figured it out-- he rationalized the denominator.
April 14, 2009

Calculus
This is a problem we did previously on a test; my answer was marked correct, but I am having trouble getting my answer in the same form that my teacher gave it. The question: Find the derivative of (x/(x+1))^1/2 His answer: ( (x(x+1))^(1/2) ) / (2x(x+1)^2) My answer: ((x+1)^(1...
April 14, 2009

Calculus
Show that the function f(x)= x^(3) +3/(x^2) +2 has exactly one zero on the interval (-infinity, 0). So far this is what I have: 0=x^3 + 3/(x^2) +2 -2= (1/x^2)(x^5 + 3) -2x^2= x^5 +3 But now I'm stuck. I also am not sure if this is how I'm supposed to be solving the ...
April 12, 2009

Calculus
Thank you! That makes more sense... because you would say f' of g of x.... so 1/3 of 2 = 2/3. That makes sense!
April 1, 2009

Calculus
I finished this problem but I wanted some feedback because I don't know if it's entirely correct. Suppose that functions f and g and their derivatives with respect to x have the following values at x=2. f(x)=8 g(x)=2 f'(x)=1/3 g'(x)=-3 Find d/dx of f(g(x)) at x...
April 1, 2009

Calculus
I have a two part question that pertains to a curve (r(x)) and its tangent line at x=3. We are given that at x=3, r(x)=8. In order to find the slope of the tangent line, we are given another point (on the tangent line): (3.2, 8.5). Therefore the slope of the tangent line at x=...
March 31, 2009

CHEM..URGENT!
At the anode, the oxidation of bromide ions (1.07 ) occurs because it has a higher (less negative) potential than the oxidation of water (1.23 ) or fluoride ions (2.87 ). The product of the oxidation of bromide ions is liquid bromine. At the cathode, the reduction of silver ...
March 30, 2009

Statistics
Ummm, guiding our thinking doesn't work. I'm student teaching right now and I've been a student for year, sometimes you have to give the student the answer in order for them to figure out for themselves WHY it is right.
March 29, 2009

Physics
A child twirling a 0.0120kg ball on a string in a horizontal circle parallel to the floor. The radius of this circle is 0.358m. The ball traveling once around the circle is 2.08 seconds. a)Determine the centripetal force acting on the ball. b) If the speed is doubled, does ...
March 25, 2009

Chemistry
Which liquid is more viscous at room temperature water or molasses? explain
March 22, 2009

US HISTORY.
Why did farmers express discontent during 1870-1900 and what impact did their new attitudes and actions have on national politics?
March 8, 2009

chemistry
DrBob222 do you think you can help me figure these out please. On #4 would I do 12.2g x 35.0g= ??
March 4, 2009

chemistry
1) 4.20 x10^6 ml + 12.3 x 10^2 L= My answer is 4.21 x 10^9 2) Change 17.7 L to cubic meters? My answer 1.77 x 10^3 3) Draw an electron dot diagram for K3PO3 My answer K O P O O I couldnt do the dots but there should be 26 dots right? 4) A 35.0 g sample of a carbon-oxygen ...
March 4, 2009

Science/Math
1/4 of 1km is 250m
February 27, 2009

geometry
What is the circumference of a circle circumscribed about a square with a side length 24 m?
February 26, 2009

Chemistry
Thanks!
February 25, 2009

Chemistry
I did an experiment to determine the freezing point depression and then find the molecular weight of the unknown solute added to the solvent, what would be the effect on calculating the molecular weight if some cyclohexane(my solvent) evaporated while the freezing point of the...
February 25, 2009

english
can anyone tell me what is a proper sentence
February 22, 2009

calculus
how do you integrate 30x^2/(x-2)(x+3)(x-5)
February 17, 2009

calculus
how do you integrate 30x^2/(x-2)(x+3)(x-5)
February 16, 2009

calculus
how do you integrate dx/(x^2*(x^2+4)^1/2)
February 16, 2009

math
how do you integrate dx/(x^2*(x^2+4)^1/2)?
February 15, 2009

math
how do you integrate 30x^2/((x-2)(x+3)(x-5)) using partial fraction decomposition
February 15, 2009

physics
4.8mF capacitor in series with 500 ohm resistor is connected, via a switch, to a 12V battery. What is the current through the resistor at t=1.0s after the switch is closed? I tried doing I^2R = 1/2 CV^2 and solving for I but the answer wasn't correct. can some1 please help...
February 13, 2009

math
what would the antiderivative of e^-2x be? and if the antiderivative of that is -1/2e^-2x, what would that antiderivative be?
February 12, 2009

10th grade Chemistry
What is an organic substance found in a dna molecule that is a weak base?
February 11, 2009

Chemistry
Wrong^ The eq. point will be below 7 because the Ka is greater than the Kb --> [H+] is greater than [OH-].
February 4, 2009

algebra
Lin's garden has an area of 782 square feet. The length of the garden is 5 less than three times its width. What are the dimensions of the garden?
February 4, 2009

chem
Is this how you write a skeleton equation i dont understand this Lithium(s)+gold(III)chloride(aq)= Lithium chloride(aq)+gold(s) iron(s)+tin(IV)nitrate(aq)= Iron (III) nitrate(aq)+tin (s)
February 1, 2009

Chemistry
How would you write skeleton equations for these reactions Lithium(s)+gold(III)chloride(aq)= Lithium chloride(aq)+gold(s) iron(s)+tin(IV)nitrate(aq)= Iron (III) nitrate(aq)+tin (s)
February 1, 2009

Chemistry
How would you write skeleton equations for these reactions? I am very confused Hydrogen iodide(G)= Hyrdrogen(G)+Iodide(G) Aluminum(s)+iodines(s)= Aluminum iodide(S) Silver Nitrate (aq)+Sodium sulfide (aq)= silver sulfide(S)+ sodium nitrate (aq)
January 31, 2009

Chemistry
How would you balance this equation Mg(s)+FeCl3(aq)=Fe(s)+MgCl2(aq)
January 31, 2009

Introduction to Psychology
Okay I have to do short paper on my results for a survey that I did to determine which branch of psychology I would be best suited for. My results were Behavioral: 20, Humanistic: 20, and Psychoanalytical: 17. I think my main problem is getting all of the information I need ...
January 30, 2009

chemistry
Solid zinc and aqueous hydrogen sulfate reacts to produce hydrogen gas and aqueous zinc sulfate Is this the right answer Z(aq)+HS equals H(G) ZS? if not can u please correct me
January 26, 2009

Chemistry
how do you write a chemical equation with this reaction? can u help me solve these 1.Liquid carbon disulfide reacts with oxygen gas, producing carbon dioxide gas and sulfur dioxdie gas. 2. Solid zinc and aqueous hydrogen sulfate reacts to produce hydrogen gas and aqueous zinc ...
January 26, 2009

11th grade Art
What is keyhole painting? Could you help me with analysing an artwork. What information should I give.
January 23, 2009

English
Oh thank you! It wasn't easy but once I figured it out life became fabulous again! :) Thanks again! Have a great night!
January 20, 2009

English
Yeah I know! It is really hard for others to understand that. The first three months were horrible because I just kept thinking "why me?" which I'm not normally like! But then after my three month check-up I started thinking about how I was handling things and ...
January 20, 2009

English
Thanks so much guys! My essay is about how everyone is the master of their own fates and I am giving an example of how I learned this valuable lesson. I had to have jaw surgery and at first I was miserable and wasn't acting like my normal bubbly cheerful self, but then how...
January 20, 2009

English
Yeah I know I think it fits perfectly too but I am trying to avoid using it...it's really frustrating trying to think of something else though! Would "Eight miserable months" or "Eight long, painful months" work? Or do you think I should just stick to &...
January 20, 2009

English
So I'm working on an english paper but I've been stuck the past hour on what to do. I'm trying to take my teachers advice by putting in an anaphorism (repeated words or phrases)but I'm having trouble. I'm repeating the phrase "eight months" but I...
January 20, 2009

litureature
In emphasizing the importance of individual thinking and basing one's beliefs on one's own experiences, Sujourner shows she has much in common with
January 16, 2009

english essay
i need help with figuring out the satirization of Huck Finn. such as with the word choice/ dialect he uses and the irony in the book.
January 12, 2009

Intermediate Algebra
Find the maximum value of the objective function and the values of x and y for which it occurs. F = 5x + 2y x + 2y (greater than or equal to) 6 2x + y (greater than or equal to) 6 Both x and y are greater than or equal to 0. I don't understand how to do this! And I can'...
January 12, 2009

randon question that needs an answer
how many years apart is it leagle to marry like can u be 27 but marry sum1 that is 32? or 19 but marry sum1 that is 24? like how many years apart ...can u be 5 years apart and still marry the person? is that leagle?
January 11, 2009

2nd grade Math
Wich 3 flowers add up to 85 cents? Tulip-48 cents Rose-52 cents Dafidale-25 cents Viloit-37 cents Sunflower-23 cents
January 7, 2009

5th grade math
something is missing hunn.
January 6, 2009

US history
i dont know estabished credibility?
January 5, 2009

US history
How did the Supreme Court decisions mentioned (Marbury v. Madison, McCullough vs. Maryland, and Martin v. Hunter's Lessee) strengthen the American republic?
January 5, 2009

Precalc
What does something have to be inorder to be considered a function. I'm not talking about the verticle line test or somethng to verify, im saying in words. like can it not be negative or somehting?
January 2, 2009

PreCalc
I am supposed to graph this y= -x^2+2x he told us to coplete the square to get us the vertex, but how do i complete the square with a - in front of the x^2??
January 2, 2009

9th grade
what is one obstacle that both martin luther king and richard wright address in i have a dream and black boy.
December 18, 2008

Chemistry- Please help me
A sample consisting of 22.7 g of a nongaseous, unstable compound X is placed inside a metal cylinder with a radius of 8.00 cm, and a piston is carefully placed on the surface of the compound so that, for all practicla purposes, the distance between the bottom of the cylinder ...
December 16, 2008

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