Friday

December 19, 2014

December 19, 2014

Number of results: 13,507

**MATH**

LAMONT IS REQ TO READ 1 BIO, 1 SCIENCE, AND 1 POETRY BOOK EACH MONTH. HIS BOOK CHOICES ARE: 2 DIFF BIOS 3 DIFF SCIENCE 3 DIFF POETRY HOW MANY COMBINATIONS OF REQ BOOKS ARE POSSIBLE?
*January 26, 2009 by lANEY*

**differential**

dT/dt= k(T - Tm), t > 0 where k is a constant of proportionality, T and Tm are measured in degrees Fahrenheit, and time t is measured in hours. Because Diff wants to investigate the past using positive values of time, he decides to correspond t 0 with 6:00 A.M., and so...
*September 27, 2012 by armut*

**Diff eq**

y'(x)=sqrt2y(x)+7, y(4)=1 Solve the seperable diff eq
*February 24, 2013 by Melissa*

**Science**

Put slice of "potato" in four diff bowls. Add diff "solutions" to each bowl. Which is Dependent Variable and which is Independent Variable?
*October 26, 2011 by LW*

**math**

Please help me on this calculus question. I am getting the wrong diff. equation and so my answers to the remaining parts are wrong. ---------------------- A thermometer reading 85 degress outside is brought into a room with a constant temperature of 72 degrees. The rate of ...
*September 29, 2009 by Matt*

**Calculus Help**

use logarithmic diff. to find the derivative of the function. Show steps please! so I can see how it is done. Thank you so much! y=(e^(-x)cos^(2)(x))/(x^(2)+x+1)
*March 18, 2014 by Maho*

**Pre-Calculus**

I want to know how we know if a function is continuas or discontinuos and what are the types and diff if discontinuos functions?
*September 22, 2008 by Mia*

**physical science**

if two lighting volts heat exactly they same place at they same time in are frame of ref.,it is possible that observed in other frames will see the volts heating at diff. time r at diff. places????? explain.
*September 25, 2011 by angie*

**calculus**

Implicit diff. y^2 + 4xy +4y^2=40 2yy'+ _______ + 8y*y=0 I am confused with the 4xy. Would you write this out to be 4x*y'+4y OR 4x*4y' + 4y*4x'? Please help
*October 5, 2014 by Annette*

**Calculus Help Please!!!**

If x^3 - y^3 =3 , use only implicit diff. to find d^2y/dx^2 . Express your answer in terms of x and y only and write is as a proper fraction that is completely simplified as much as possible.
*April 8, 2014 by Tanya *

**Calculus**

"Leave the answer as a definite integral, but indicate how it could by evaluated by using the fundamental theorem of calculus." I solved the problem to a definite integral. Proceeding via the fundamental theorem, would involve finding the indefinite integral (or antiderivative...
*July 3, 2012 by Parker*

**calculus **

actually an ODE question(but there's no diff. eq. subforum) (y^2)(dy/dx)+y^3/x =2/x^2 using substitution u(x)=y^3 so I've been doing a few of these and getting them all wrong and this problem... I don't know where to start. I tried (1/u)(du/dx)+u/x(du/dx)=2/x^2 but that gives ...
*January 30, 2012 by bob*

**Calculus Help STEVE**

find y'' by implicit differentiation. 2x^3 + 3y^3 = 8 I got the first derivative as you but the problem was asking for second derivative by implicit diff. this is where i got confused. Thank you!!!
*March 20, 2014 by Matt*

**Calculus Help Please!!! **

Use implicit diff. to find dy/dx of each of the following. In the following x,y and (a) are all variables. Show step by step please! Thank you! 1) y^2 = x^2+a^2 2) y^2+ay = x^2+ax+a^2
*March 16, 2014 by Josh*

**DIFF. CALCULUS**

A particle is moving along the parabola 4y = (x + 2)^2 in such a way that its x-coordinate is increasing at a constant rate of 2 units per second. How fast is the particle's distance to the point (-2, 0) changing at the moment that the particle is at the point (2, 4)?
*November 18, 2010 by KAREEN*

**Calculus Help Please!!! Urgent!!!**

If x^3 - y^3 =3 , use only implicit diff. to find d^2y/dx^2 . Express your answer in terms of x and y only and write is as a proper fraction that is completely simplified as much as possible. d^2y/dx^2= -6x/y^5 (this is the answer I should get but i dont know how to show steps...
*April 9, 2014 by Tim*

**diff calculus**

1.) triangular corner lot has perpendicular sides of lengths 120 feet and 160 feet. Find the dimensions of the largest rectangular building that can be constructed on the lot with sides parallel to the streets.
*October 17, 2014 by west*

**diff eq**

solve 2y^2(y'')+2y(y')^2=1
*February 17, 2013 by jump*

**Diff EQ**

is the integration of (x-2)^2 = 1/3(x-2)^3 Yes, that is correct.
*January 22, 2007 by nicole*

**engilsh**

diff in fact oppinion
*January 3, 2011 by no name*

**Math**

What are the steps in finding the diff quotient for f(x)= sq rt of x?
*November 3, 2008 by Kassi*

**biology**

trying to find the sims and differences for the following --------------------------------------- fertilization v pollination sim's both part of the process of sexual repro diff. pollination doesnt involve direct contact since it is transfer from the anther to the stamens by ...
*July 27, 2009 by Jim_R*

**US history**

what/who did the antifederalists support? (what is diff. from them and the federalist beliefs)
*October 20, 2008 by Samantha*

**computer**

diff between actual and formal parameter
*October 25, 2011 by computer*

**computer**

state diff. between HTML AND DHTML
*June 5, 2012 by Shivansh Tomar*

**Biology - URGENT Enzyme Lab**

Did a catalase producing hydrogen peroxide lab, used manganese dioxide, fresh frozen liver, potato, ice, fine clean sand, etc. Basically just added hydrogen peroxide to the catalysts under diff conditions and stuff. Just dont get this question which is : how do you account for...
*April 5, 2013 by Shreya*

**eng**

whats the diff b/w figure of speech and figurative language?
*January 2, 2008 by BEN*

**social studies**

how is the iroquois confederacy diff. from the colonial government?
*March 25, 2010 by lauren*

**Diff EQ**

Find all critical points of the given system and investigate the stability of each. dx/dt = y - 1 dy/dt = x^2 - y
*April 4, 2011 by Alex*

**Diff Calculus**

Find the interval(s) where the function is increasing of decreasing. find the: a) critical value(s) b) critical point(s) c) max. value + max. point d) min.value and min. point e)point on inflection if there is: 1) y=x^4-3x^3+22x^2-24x+12 thanks:)
*October 2, 2011 by unknown*

**Anatomy**

I am working on a research project. I am concerned about my opening paragraph. Could anyone read this to see if it makes sense. My topic is C. Diff. In 2009 according to the CDC and US Deparmtne of Social Secirty there were 2,437,163 people that died that year. During 2009, ...
*August 23, 2012 by Jenifer*

**home economics**

What are the diff.tools, equipments,materials used for farm crop production.
*June 4, 2012 by bing*

**Polynomials**

Im so tired of being frustrated can someone help get the sum diff and product of this problem 3^x ∶ x^2-3^x+ 2
*September 19, 2013 by tela*

**polynomials**

can someone help me with this crazy problem please I have to do the sum diff and product for class x^3- ¡¼2x¡½^2 + 3x-1 ¡Ã x^2- x+4
*September 20, 2013 by Rick *

**polynomials**

Can someone check my answer please i dont know if I am doing this right x^ (2):x= sum (x^2 )+ (x)=x^2+x diff (x^2 )-(x)= (x^2-x) Product (¡¼x)¡½^2 (x)=x^2^x
*September 20, 2013 by Rick *

**math grd 11**

how do u draw an asymtote ? diff btwn set and interval notation? and example plz
*April 15, 2010 by forki*

**Pre Calculus 12**

Im on the chapter of permutations/combinations/fundamental counting principle need help with 2 questions 1. emma is arranging her books in piles on her desk. she has 5 math books, 3 english books, and 4 science books. how many ways can she arrange them if she wants to keep the...
*January 18, 2013 by Shreya*

**Physics**

Please can you help out: 1)The Potential diff across the terminals of a battery is 8.5v when there is a current of 3amps in the cct from the -ve to the +ve terminal. When the current is 2amps in the reverse direction, the potential diff becomes 11volts. a) what is the internal...
*April 17, 2007 by Charles*

**DIFF CALCULUS**

A swimming pool is 12 meters long, 6 meters wide, 1 meter deep at the shallow end, and 3 meters deep at the deep end. Water is being pumped into the pool at ¼ cubic meter per minute, and there is 1 meter of water at the deep end. a. What percent of the pool is filled? b. At ...
*October 18, 2014 by JR*

**COMMON PPL MATH MIDTERM**

how do u draw an asymtote ? diff btwn set and interval notation? and example plz
*April 15, 2010 by forki*

**polynomials**

can someone please help me with this problem I have to get the sum diff and product I keep trying to work it out but i really think im blowing it. x^3- ¡¼2x¡½^2 + 3x-1 ¡Ã x^2- x+4
*September 21, 2013 by Rick *

**Calculus - please check my work**

differentiate each function a) y = cos^3x b) y = sin(x^3) c) y = sin^2 xcos3x my answers: a) y' = 3cos^2 x(-sinx) b) y' = cos(x^3)(3x^2) c) for this one, i dont know which one is correct. i got 2 different answers but i think they may be the same.. im not sure, i did it twice ...
*June 19, 2012 by Henry*

**math grd 11-midterm tomm**

please explain how do u draw an asymtote ? and whats the diff btwn set and interval notation? and example plz thanks
*April 15, 2010 by just wondering*

**Polynomials check my answer please **

I need help bad i been doing this homework since i got home at 4:00 and am stuck on this problem. X -1 : X-2 =sum (x+1)+(x-2)=(x+x+1-2) diff (x+1)-(x-2)=(x-x-1-2) Product (x-1)(x-2)=(x^2-1)
*September 19, 2013 by johnnie*

**algebra**

i am three digit number below 100 sum of my digit is 14 and the diff is 4 who am i
*June 11, 2014 by belina*

**Diff Eq**

If y(t)=3e^(t^2)is known to be the solution of the initial value problem y'+p(t)y=0, y(0)=y_0, what must the function p(t) and the constant y_0 be?
*September 7, 2012 by Joe*

**geography**

i did and iv already got that info so i need diff info
*October 11, 2009 by holly*

**Polynomials**

Can someone show me step by step how to get the sum diff and product of this problem x^3- 〖2x〗^2 + 3x-1 ∶ x^2- x+4
*September 19, 2013 by tela*

**Polynomials check my answer**

My brother said I did this wrong can someone check this for me please X Y-1 = sum(x)+ (y-1)=(X+y-1) diff(x)-(y-1)=(x+y+1) Product (x) (x-1) = (xy-1) = (xy-1)
*September 19, 2013 by tela*

**math**

find the 5 diff. ways a collection of 100 coins-pennies, dimes, and quarters- can be worth exactly worth $4.99.
*January 27, 2009 by Julie*

**math percentage diff**

a value of 2.40 increased to 4.48 in 5 years. what is the change in percentage each year? this one was difficult to figure out..
*March 24, 2010 by danny*

**Economics**

Microeconomics: Describe the diff. market forms ( I've done that) Under which equlibria and under which circumstances is sustainable profir possible? ( I am lost)
*January 5, 2007 by Angel*

**MATH MID TERM TOMM PPL PLZ HELP**

how do u draw an asymtote ? diff btwn set and interval notation? and example plz
*April 15, 2010 by forki*

**english**

what is autism? autism is a developmental disablity that affects a person's way of communicating with others, their social interaction, and educational performance. how i put this in diff words?
*February 28, 2010 by Anonymous*

**chem**

compute theoretical yield (g) ~2Al+3Cl2->2AlCl3 ~2g Al, 2g Cl2 [ans:2.5g AlCl3] i need the calculation work bcus i got diff from the ans which is 7.12 g.
*July 20, 2011 by lily*

**polynomials help me please**

Im sorry here is the problem rewritten X^3 -2x^3 + 3x-1 : X^2-x+4 I have to get the sum diff and product and it kicking my tail i think i keep doing it wrong can someone please help me
*September 21, 2013 by Rick *

**Math - derivative of f(x) (check)**

f(x)= (x^2-1)^3,is its derivative f'(x)= 6x^5 -12x^3 + 6x. Is there an alternative answer, because a computer generated answer is diff then mine. please help.
*October 27, 2010 by Anonymous*

**Old Bridge**

Sue has 8 pairs of dress shoes. How many diff. way can she arrange five pairs of her shoes in her closet?
*February 25, 2012 by Jane*

**Diff eqn- IVP**

A simple pendulum of length is oscillating through a small angle θ in a medium for which the resistance is proportional to the velocity. Obtain the differential equation of its motion and discuss the motion.
*March 12, 2011 by shasha*

**probability**

There are four children of different ages in a family. Their mom purchases six dierent gifts and decides to divide the gifts randomly between the children. Assuming that a child can receive no gift or multiple gifts, answer the following questions: (a) What is the ...
*September 7, 2014 by navera*

**ALG II - Probability**

Owners of a restaurant advertise that they offer 1,114,095 diff lunches based on the fact that they have 16 “free fixins” to go along with any of their 17 menu items (sandwiches, hot dogs, and salads). How did they arrive at that number?
*May 18, 2010 by Cole*

**Chemistry**

Then, do isotopes have different atomic radii? since they all have different numbers of neutrons. Even if they only differ by 10^-23 m, there is still some diff right?
*February 29, 2008 by Kurst*

**Diff eqn- IVP**

The differential equation that governs the forced oscillation is shown below: 0.2 d²y/dt² + 1.2 dy/dt +2y = r(t) where r(t) is the external force. Given that r(t) = 5 cos 4t with y(0) = 0 . find the equation of motion of the forced oscillations
*March 14, 2011 by shasha*

**phys. science**

when most matter is heated it expands right? & doesnt water expand when it is heated? & what is the diff. b/w thermal conductor and thermal insulator? & in which direction will heat spontaneously flow?
*May 15, 2008 by leann*

**Mathematics**

Sum of radii of two spherical ball is 22 cm and the diff of their volumes is 3050 2/3. Find radii. In this question if i r+R= 22 (eq 1)and Pi(r2-R2)=3050 2/3 (eq 2) and subs value of r from eq 1 in eq 2; my answer wont match with textbook. What should i do???
*November 4, 2014 by Esha*

**spanish**

I have a few diff questions: 1. Georgia _____________) esta enojada or teine tos)porque tiene varicela y no puede ir a la fiesta de Anita I put in the blank tiene tos
*February 3, 2008 by sam*

**Diff eqn- IVP**

A particle moves on the x-axis with an acceleration, a=(6t-4)ms⁻1. Find the position and velocity of the particle at t=3 , if the particle is at origin and has a velocity of when t=0
*March 12, 2011 by shasha*

**chem**

a mixture of 50g of S & 1x10^2g of Cl2 reacts completely to form S2Cl2 &SCl2. Find the mass of S2Cl2 formed. (ans:20.2g) i need the calculation work bcus i got diff. from the ans which is 70.2g.
*July 20, 2011 by lily*

**differential equations **

Solve the following equation explicitly by expanding up to order x5, the following 2nd order diff equation. y''(x) = (1 + x^2)*y(x) pls show working y =f(x)
*November 29, 2011 by zac*

**help spanish**

I am having a very diff time with htis answer these questions negatively - indicating that wjta is being asked already happened. 1. Vas a buscar una tiends de computadoras en el centro comercial? 2. Vamos a encontrar muchas rebajas en el centro?
*January 26, 2008 by sam*

**Chemistry**

a sample of an unknow metal exists as a perfect cube that meausres 0/78 in on a side and weighs 61.4 grams. what would be the mass, in grams, of a diff sample of this metal that has a volume of 25.0 cm^3
*September 18, 2012 by Helen*

**physics**

A plane sound wave propagated in air has individual particles which execute a periodic motion such that their displacement y from their rest position at any time t is y=5x10^(-6)sin(800pie(t)+theta). Calculate (i) wavelength. (ii) phase diff in degree between particles 17cm ...
*March 22, 2010 by Edwin*

**Pre-Calculus/Calculus**

I am too embarassed to ask this Calculus (really pre-calculus) question in tutoring, because I know I should know. Is the inverse of f(x)=3x-1 actually f(x)=1/3x+1? How do I find it? What if it asks the same equation replaced with f to the -1 power (x)? I think I know how the ...
*July 1, 2008 by Molly*

**physics**

if two lighting volts heat exactly same place at the same time in are frame of ref,it is possible that observes in other frames will see the volts heating at def. time or diff. places? explain
*September 25, 2011 by angie*

**chemistry - empirical formula**

write the empirical formula for each of the following molecular formulae" a)P4O10 b)C2H6 Confused as to what the diff.is b/w empirical and formula...have no idea how to answer these b/c they look like empirical formulas to me
*May 23, 2008 by Sarah*

**Math**

Help please... some diff equation prbolems... 1.) Transform 2xdy - y(x+1)dx + 6y^3dx = 0 into a Bernoulli Equation. 2.) The equation of the tangent line of the one-family of curve x^2 + y^2 = 25 at P(4, 3) is_______ 3.) The complete solution of 2x^3 dy = y (y^2 + 3x^2) ...
*December 14, 2009 by Therese*

**science**

Which ones apply to a compound? i thought it was 4 and 6 1. Does not settle on standing 2. scatters light 3. can seperate when allowed to stand 4. contains only fixed amts of components 5. Often appears cloudy 6. components do not lose their own properties 7. looks the same ...
*October 6, 2007 by claire*

**science**

Which ones apply to a solution ? i thought it was 2,6,7 and 8 1. Does not settle on standing 2. scatters light 3. can seperate when allowed to stand 4. contains only fixed amts of components 5. Often appears cloudy 6. components do not lose their own properties 7. looks the ...
*October 6, 2007 by claire*

**economics**

elow kindy ans. my question pls.. what is optium point in budget line and indefference curve, and also what is the diff. between budget line and indefference curve?..
*February 21, 2009 by vanie*

**physics**

An oil drop ‘B’ has charge 1.6 × 10−19 C and mass 1.6 × 10−14 kg. If the drop is in equilibrium position, let 10 k be the potential diff. between the plates. [The distance between the plates is 100 mm] Then what is the value of k.
*October 12, 2013 by preet*

**Chem**

Indicate which of the following are exact numbers. the mass of a stapler? i think its inexact because all staplers are different sizes. Is that correct? Also,the mass of a postage stamp. is that inexact? because they can also be diff. sizes?
*August 17, 2012 by Hannah*

**Maths A level**

A large cylinrical tankor radius 40cm contins a liquid and at time,t the depth is h cm. There is a hole in the bottom and liuid leaks out at a rate of 32pi h to power of 0.5. Show at time t, the heighth of the liquid in the tank satisfies the diff. eqn..dh by dt=-0.02 h to ...
*May 23, 2014 by Thomas*

**Calculus**

What is the use of Calculus? How is it use in jobs? What jobs use Calculus? Calculus is used in engineering, economics, any physical science, and in business (e.g., actuary studies and statistics).
*May 5, 2007 by Anonymous*

**science thanks**

Which ones apply to a homogeneous mixture? I think only # 4 and 7 apply? 1. Does not settle on standing 2. scatters light 3. can seperate when allowed to stand 4. contains only fixed amts of components 5. Often appears cloudy 6. components do not lose their own properties 7. ...
*October 6, 2007 by claire*

**science thanks**

Which ones apply to a homogeneous mixture? I think only # 4 and 7 apply? 1. Does not settle on standing 2. scatters light 3. can seperate when allowed to stand 4. contains only fixed amts of components 5. Often appears cloudy 6. components do not lose their own properties 7. ...
*October 6, 2007 by claire*

**Business Management**

What is the difference between executive and non executive pay? Contrast the principle diff between executive pay with non-executive. What are the controversies associated with the growing disparity between the compensation packages?
*June 1, 2011 by Nicole*

**science one more**

Which ones apply to a heterogeneous mixture? I think only # 6 and 8 apply? 1. Does not settle on standing 2. scatters light 3. can seperate when allowed to stand 4. contains only fixed amts of components 5. Often appears cloudy 6. components do not lose their own properties 7...
*October 6, 2007 by claire*

**Algebra**

In an interview of 50 math majors, 12 liked calculus and geometry 18 liked calculus but not algebra 4 liked calculus, algebra and geometry 25 liked calculus 15 liked geometry 10 liked algebra but neither calculus nor geometry 2 liked geometry and algebra but not calculus. Of ...
*January 11, 2010 by Anita*

**Calculus**

Time (min)0___10___20____30__40____50____60 Temp (F)68_72.64_76.97__80_82.9_85.38__87.5 Use the Trapezoidal Rule to find the best approximation you can for the average temperature in the trailer from 10:00 until 11:00. (10/60)/2 (68 + 2(72.64) + 2(76.97) + 2(80) + 2(82.9) + 2(...
*May 22, 2008 by Anonymous*

**English**

I am trying to write a thesis statement for a research paper I have to write. The paper is over C. Diff this is a disease. Here are my ideas I am just not sure that either are even written correctly. 1. Deaths caused by Cloustridium Difficiule are preventable. 2. Simple ...
*August 29, 2012 by Jennifer*

**socials**

what the meech lake meetings about? Meetings about changes to the Constitution. It offer to recognize Quebec as a distinct society. It also proposed giving more power to the other provinces. what problems meech create for diff parts of the canada? Aboriginal peoples pointed ...
*December 16, 2011 by Mohammad*

**Calculus**

What is the simplest solution to the Brachistochrone problem and the Tautochrone problem involving calculus? (I know that the cycloid is the solution but I need a simple calculus proof as to why this is the case)
*May 27, 2010 by Sam*

**Biology- check my answer (diff one)**

Which of the following are true concerning living things? Check all that apply. A)They contain a vital force absent in nonliving things. B)They are composed of molecules that contain carbon-carbon bonds. C)They undergo chemical reactions to use energy they acquire from the ...
*December 19, 2012 by joey*

**diff eqn.**

y(t) = -0.2451 cos 4t + 0.9804 sin 4t + e^(-3t ) (A cos〖t+B〗 sin〖t)〗 y'(t) = ?
*November 20, 2011 by Farah*

**math**

8. In an interview of 50 math majors, 12 liked calculus and geometry 18 liked calculus but not algebra 4 liked calculus, algebra, and geometry 25 liked calculus 15 liked geometry 10 liked algebra but neither calculus nor geometry 2 liked geometry and algebra but not calculus. ...
*November 30, 2009 by poo*

**Physical Chemistry**

Three electrolytic cells containing solutions of CuNO3, Sn(NO3)2, and Fe(NO3)3, respectively, are connected in series. A current of 2.2 A is passed through the cells until 3.10 g of copper has been deposited in the cell. (a) What masses of tin and iron are deposited? tin g ...
*March 29, 2010 by Mark*

**Math**

a) f(x) = 4.1x +92.16 b) f(x) = 17.9x + 19.36 c) f(x) = 8.8x + 55.4 ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they got these answers EXTRA INFO: The demand function for a new product is p(x)= - 4x +42.5, where x is the quantity sold in thousands and p is the ...
*October 20, 2011 by Nancy*

**Math**

a) f(x) = 4.1x +92.16 b) f(x) = 17.9x + 19.36 c) f(x) = 8.8x + 55.4 ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they got these answers EXTRA INFO: The demand function for a new product is p(x)= - 4x +42.5, where x is the quantity sold in thousands and p is the ...
*October 20, 2011 by Nancy*

**Math( help please ! )**

a) f(x) = 4.1x +92.16 b) f(x) = 17.9x + 19.36 c) f(x) = 8.8x + 55.4 ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they got these answers EXTRA INFO: The demand function for a new product is p(x)= - 4x +42.5, where x is the quantity sold in thousands and p is the ...
*October 20, 2011 by Poppy *

**math-10th grade( quadractics)**

the centre point of a circle is 5,3. the top most point of the circle is the vertex. the radius of the circle is 5 and one of the zeroes is 9. figure out the vertex. tehn figure out the equation and convert it in standard form? p.s-plz exaplain step to step process or detailed...
*March 30, 2009 by Redspider*

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