Saturday

April 19, 2014

April 19, 2014

Number of results: 51,885

**Calculus--Steve plz?**

Find the inverse Laplace transform of the function: F(s)=1/(s(s+1)(s+2)) ...A special thank you to Steve who has already been a tremendous help! Thank you so much =)
*Monday, July 29, 2013 at 3:40am by Elyse*

**Calculus--Steve plz?**

Thought I already gave you the key to this one. Use partial fractions to separate the denominators, and then recall that L{e^at f(t)} = F(s-a) What is not clear?
*Monday, July 29, 2013 at 3:40am by Steve*

**Calculus-PLZ HELP STEVE!**

Remember your algebra? Using partial fractions, see that F(s) = (7/4)/(s+2) - (11/4)/(s-2) Since L{1} = 1/s, L{e^at f(t)} = F(s-a) L{e^-2t} - L{e^2t} = 1/(s+2) + 1/(s-2) I think you can take it from there.
*Sunday, July 28, 2013 at 5:04am by Steve*

**Calculus PLZ HELP!**

since a constant does not depend on x, its value does not change no matter what x does.
*Thursday, May 24, 2012 at 4:51pm by Steve*

**Calculus-PLZ HELP STEVE!**

Find the inverse Laplace transform of the following function: F(s)=(9+s)/(4-s^2)
*Sunday, July 28, 2013 at 5:04am by Elyse *

**Calculus-HELP PLZ !!!!**

you know it will be some exponentials e^ax where the exponents solve 4a^2-9 = 0 y = c1 e^(3/2 x) + c2 e^(-3/2 x)
*Thursday, July 18, 2013 at 3:14pm by Steve*

**Calculus (help Steve plz)**

1. whassup? just a simple vector |w| = √(8^2+15^2) = 17 since (sin+1)(sin-1) = sin^2 - 1 and cos^2 = 1-sin^2, you have -cos^2 x
*Wednesday, November 28, 2012 at 10:33am by Steve*

**Calculus-HELP PLZ !!!!**

Thank you so much Steve! I had gotten this far but what about solving for the "complete" general solution? That's where I get lost....
*Monday, July 22, 2013 at 4:37pm by Elyse*

**word unscramble**

plz plz plz plz help me have to give it tommorow. it has to school items only. the four words are that need to be unscramble. 1. EEFILNPPTT 2. AEHIRSSTTW 3.EEHKOSSUY 4. CEGHLMOSTY SO PLZ HELP I REAlly wannt to know what it is plz help.
*Thursday, September 28, 2006 at 3:34pm by shruti*

**ms. sue or steve pretty plz help me**

plz help me
*Tuesday, October 9, 2012 at 5:05pm by jman*

**@Ms. Sue or Steve plz help**

plz help
*Thursday, March 28, 2013 at 5:01pm by Jack 'N Jill*

**ms sue or steve math plz help**

plz help
*Monday, April 8, 2013 at 4:36pm by Anonymous*

**LIVING ENVIRONMENT**

the ability to grow in size is a characteristic of living organism .Although an icicle may grow in size over time,it is considered nonliving because there is 1)an incerase in matter ,but no increase in the number of icicle. 2)an interaction between the icicle and the ...
*Tuesday, February 12, 2013 at 9:14pm by tania sharmin*

**ALG 2 PLZ PLZ HELP**

1. slope is (7-3)/(8-6) = 2 That's some steep hill!! (y-3) = 2(x-6) (y-9) = 2(x+12) is parallel (y+16) = -1/2 (x-11) is perpendicular
*Sunday, December 16, 2012 at 7:25pm by Steve*

**calculus**

integrate ((x^3/6)+(1/(2x)))*squareroot of 1+(x^4/4)+(1/4x^2)-1/2..plz help me...tnx in advance!
*Monday, May 7, 2007 at 12:19pm by Maria-PLZ HELP*

**science**

someone plz plz plz plz plz plz plz plz plz help me!
*Friday, February 8, 2013 at 1:24pm by corie*

**Calculus-PLZ help!**

v-u x w-u is a vector perpendicular to the plane containing u,v,w. Divide by its magnitude to get a unit vector uxv•w is the volume desired check u•v u•w v•w for orthogonal
*Monday, May 13, 2013 at 6:58pm by Steve*

**Social Studies**

I am doing an ABC book to for Florida and i need a word for the letter X to. IT is due MAY 26 , 2010!!!!!!!!!!!!!!!! I need HELP PLZ PLZ PLZ PLZ PLZ THANKS :)
*Friday, May 7, 2010 at 3:55pm by angel*

**social studies**

plz plz plz plz i NEED help! awnser this question plz! my poster is do tomorrow! i NEED help!
*Sunday, March 30, 2008 at 8:15pm by mia*

**I NEED HELP!!:(!!!! HELP ME PLZ!!**

I GOT A FEW QUESTIONS SO what is a cell part that has the funcion of a gel-like material inside cells... and what releases energy into the cell.?? plz plz plz plz HELP!!!
*Tuesday, October 20, 2009 at 8:48pm by i really need help!!*

**Calculus-HELP PLZ !!!!**

This is an exact equation. If P(x,y) = 9x^2+y-1 Q(x,y) = x-4y ∂P/∂y = ∂Q/∂x So, we have 3x^3 - x - 2y^2 + xy = c Since y(1) = 0, 3 - 1 - 0 + 0 = c so c=2
*Sunday, July 7, 2013 at 3:38pm by Steve*

**physics,plz.....give me answer as soon as possible**

plz plz plz.....help me
*Wednesday, November 24, 2010 at 11:35am by sweetie*

**Math ....urgent help**

i just dont get this elimination method ..... plz help me plz.....teach me how to keep the x and y in a parallel line. and which number to multiply.....plz help -5x-4y=-11 10x=-6-y help me plz......
*Wednesday, January 7, 2009 at 5:01pm by vero*

**STEVE or REINY-plz help!**

I don't think this can be solved using elementary functions.
*Monday, July 8, 2013 at 9:09pm by Steve*

**math**

the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz
*Wednesday, May 30, 2012 at 6:03am by PLZ HELP ME NOW...*

**calculus PLZ HELP!**

log25(log7(x)) = -1/2 since 25^1/2 = 5, 25^-1/2 = 1/5 log7(x) = 1/5 x = 7^1/5
*Thursday, April 12, 2012 at 1:01pm by Steve*

**Calculus-HELP PLZ !!!!**

9a^2+9a-4=0 (3a-1)(3a+4) = 0 a = -4/3,1/3 y = c1 e^(-4/3 x) + c2 e^(1/3 x)
*Monday, July 22, 2013 at 4:37pm by Steve*

**biology**

a boy inherits genes for tallness,but his growth is limited as a result of poor nitrition. this is an example of 1)an inherited disorder. 2)environmental influence on gene expression . 3)expression of a hidden trait 4)a characterstic controlled by more than one pair of genes. ...
*Friday, February 8, 2013 at 12:44pm by tania sharmin*

**Ela**

How could I put all these words: 1. Submit 2. Omit 3. Missionary 4. Emit 5. Remittance 6. Emissary 7. Permission 8. Transmit 9. Admit 10. Premise in one paragraph plz help and answer the question not just give in a tip plz
*Saturday, February 6, 2010 at 4:48pm by Steve*

**ALG 2 PLZ PLZ HELP**

no ideas on any of these? Even with the hints? 1.) 14n = -28 6.) m = 2t+5 m+t = 65, so t=65-m m = 2(65-m)+5 ...
*Thursday, February 14, 2013 at 4:44pm by Steve*

**Calculus-HELP PLZ !!!!**

you got me. We have found the general solution. Dunno what more you can come up with for a "complete" general solution. Does your text explain the difference? Sounds bogus to me.
*Monday, July 22, 2013 at 4:37pm by Steve*

**Calculus 12**

Simple query. plz tell me in brief. How will u slove this -3 log 3 + log 2 + 2 log 4 Plz explain
*Saturday, January 21, 2012 at 1:23am by Akash*

**CALCULUS-plz help!**

If I were you, I wouldn't be using Jiskha for Calculus III. What do you think?
*Tuesday, April 16, 2013 at 6:54pm by G. Bryce*

**Climate Graphs**

i need a climate graph for japan now plz my teacher will kill me plz plz plz
*Saturday, January 13, 2007 at 10:51pm by harry*

**English**

No the question already post it, plz help me ...plz ...plz ...any one... my native language is not english.. plz help me..
*Saturday, July 24, 2010 at 10:46pm by shan*

**Calculus.......plz help! =)**

Use any calculus method to determine extrema, intervals where the function is increasing or decreasing, asymptotes, and points of inflection for y = -x(x+1)^3
*Saturday, October 20, 2012 at 4:01pm by Amy*

**Calculus - HELP plz!**

Remember - treat the other variables like constants. Since d/dx arctan(u) = u'/(1+u^2) Fx = (-y/zx^2)/(1+ y^2/x^2z^2) Fy = (1/xz)//(1+ y^2/x^2z^2) Fz = -y/xz^2)/(1+ y^2/x^2z^2) you can massage them a bit if you like.
*Sunday, June 2, 2013 at 2:57pm by Steve*

**pscychology**

Could someone pretty plz plz plz help me...What are the 2 biggest parts of the human brain??
*Wednesday, March 11, 2009 at 3:46pm by Logan:)*

**math**

the volume of a rectangular solid is given by expressions given below.in each case find the dimentions of the solid. a)15x^2-51x+18. b)x^3+13x^2+32x+20. c)x^2-5x/2-3/2. d)x^4+x^3-x-1 plz everyone help me out.till 2 o'clock...plz plz plz
*Wednesday, May 30, 2012 at 4:00am by parul*

**SCIENCE!!--ANONYMOUS PLEASE ANSWER MY QUESTION!**

plz answer the question we were talking about plz plz. Go back to the problem. I got 184 but the worksheet answer says 136 which is correct?? plz help!! thx
*Monday, September 13, 2010 at 5:41pm by Happy Face*

**earth sci.....help needed ...urgent**

help me plz....plz.;...plz//////
*Monday, November 17, 2008 at 9:03pm by Anonymous*

**chem**

stilll didnt get it .. .. can u plz explain in detail ... how did u get the answer.. plz plz plz plz plzp l zp thnks Bond enthalpy is the energy required to break a mole of a certain type of bond. O=O = 495 kj/mol S-F = 327 kj/mol S=O = 523 kj/mol Use average bond enthalpies ...
*Wednesday, November 12, 2008 at 11:54pm by DR BOOBB Plz HELP*

**physics!! plz answer me!**

A 0.15 kg baseball moving at +26 m/s is slowed to a stop by a catcher who exerts a constant force of -390 N. How long does it take this force to stop the ball? How far does the ball travel before stopping? plz plz plz help!!
*Monday, December 10, 2007 at 9:48pm by julia*

**physics**

Plz help me as far as possible plz plz help
*Wednesday, October 31, 2012 at 10:32am by bina*

**calculus PLZ HELP!**

thanks!
*Thursday, April 12, 2012 at 1:01pm by saiyuri*

**Plz,plz help!**

Can you help me write: real-world scenario in which you would write an inequality rather than an equation? Plz, I really need help! :D
*Tuesday, January 21, 2014 at 2:13pm by Princess Anna*

**math**

please help beging you plz
*Tuesday, September 25, 2012 at 7:16pm by steve*

**steve or ms. sue plz help**

help
*Monday, December 3, 2012 at 4:34pm by Jman*

**ALG 2! plz help urgent!!**

21
*Wednesday, December 19, 2012 at 3:52pm by Steve*

**Language arts plz help~!**

Or Steve maybe??
*Thursday, April 25, 2013 at 3:53pm by Gabby*

**Math, anyone, plz help**

Reiny, Steve???
*Thursday, February 20, 2014 at 2:49pm by Gabby*

**Lattice method/math**

I really really dont like this and i need it drawn out. plz plz u would be my best friend plz!
*Tuesday, September 19, 2006 at 8:25pm by Mike*

**Ms.Sue (ONLY)**

can you plz help me in science? PLZ HELP ME! YOU HELP ALL THE TIME! *begs* plz help! i am my knees!!!!! (really i am!) its called "science 8th grade"
*Wednesday, March 7, 2012 at 7:36pm by sammie doodles :-)*

**grade 10 history**

I have a SUPER HUGE project due called National History day and need lots of help with it, plz plz plz help!!!!!
*Sunday, January 20, 2013 at 7:06pm by Macy*

**Calculus**

plz answer
*Tuesday, September 9, 2008 at 8:45pm by matematicas*

**ms sue**

can you help me with my earylier post plz
*Tuesday, September 25, 2012 at 7:04pm by steve*

**Language arts plz help~!**

Thx Steve ^.^
*Thursday, April 25, 2013 at 3:53pm by Gabby*

**calculus...plz ans urgent**

Find the dimensions of the right circular cylinder of greatest volume which can be inscribe in a right circular cone with radius of 5 inches and a hieght of 12 inches(hint:use similar triangle property).also draw a label diagram....plz answer its too urgent
*Sunday, November 7, 2010 at 10:04am by daan*

**calculus (Steve help plz)**

1) if w = <-8, 15>, find ||w||? 2) which expression is equivalent to (sin x+1) (sin x -1)? A. Cos^2x B. -cos^2x C. Cos^2x+1 D. Cos^2x-1 E. -cos^2x-1
*Tuesday, November 27, 2012 at 11:46pm by Breanna*

**Calculus (help Steve plz)**

1) if w = <-8, 15>, find ||w||? 2) which expression is equivalent to (sin x+1) (sin x -1)? A. Cos^2x B. -cos^2x C. Cos^2x+1 D. Cos^2x-1 E. -cos^2x-1
*Wednesday, November 28, 2012 at 10:33am by Breanna*

**CALCULUS**

even without calculus, since this is just a trapezoid with bases 4 and 6, height 2. 5*2 = 10 now, using calculus, integrate under the curve, from 1 to 3 integral[1,3] x+3 dx = x^2/2 + 3x [1,3] = (9/2 + 9) - (1/2 + 3) = 10
*Tuesday, November 27, 2012 at 12:05am by Steve*

**CALCULUS-plz help!**

ds = √(r^2 + r'^2) r' = 6cos3θ s = ∫[0,π/3] √(4sin^2(3θ) + 36cos^2(3θ)) dθ = 2∫[0,π/3] √(1 + 8cos^2(3θ)) dθ This is an elliptic integral. Good luck.
*Tuesday, April 16, 2013 at 6:54pm by Steve*

**ms sue**

plz help its 2 days over due
*Tuesday, September 25, 2012 at 7:04pm by steve*

**ms sue or steve plz help**

which one of them are right
*Wednesday, October 3, 2012 at 6:36pm by Anonymous*

**Math help plz check my answers!**

and we have a winner!
*Monday, March 10, 2014 at 4:34pm by Steve*

**calculus**

plz help me with this,when f(x)=1/(x^2+2), find lim[f(x)-f(a)]/x-a x ---->a
*Wednesday, February 8, 2012 at 11:58am by Bash*

**Math HELP NEEDED plz......**

ok if i take out the answer than how do i explain that?????????
*Thursday, September 11, 2008 at 7:31pm by steve*

**Algebra help PLZ NOW**

type in the equation at wolframalpha.com
*Thursday, December 13, 2012 at 11:50am by Steve*

**Unions and Intersections of Sets (Algebra)**

Steve or Reiny could you help plz??
*Tuesday, October 22, 2013 at 10:58am by Gabby*

**Homework help plz( Steve or Reiny)**

Did you get a solution to 14 or 15?
*Thursday, February 20, 2014 at 2:00pm by Abby*

**Calculus (help steve)**

Thanks Steve. But apparently, that's not the right answer, since a and b are not local minimum and maximum values.
*Friday, June 28, 2013 at 4:03pm by Bob*

**math**

A water balloon is shot into the air so that its height h, in metres, after t seconds is h = —4.9t^2 + 27t + 2.4 a)How high is the balloon after 1 s? b)For how long is the balloon more than 30 m high? c)What is the maximum height reached by the balloon? d)When will the balloon...
*Friday, January 23, 2009 at 9:21am by gagan*

**Help math plz**

(C) The opening sentence says they are deciding whether to market or not.
*Monday, December 31, 2012 at 12:26am by Steve*

**Language arts plz help~!**

I disagree with Steve's answer for number 2.
*Thursday, April 25, 2013 at 3:53pm by Ms. Sue*

**More Math for Reiny or Steve or Ms.Sue...**

Ok can someone help plz???
*Friday, September 20, 2013 at 11:22pm by Gabby*

**Physics plz **

Do any teacher here have an email plz becouse I want to send some pictures for question ,,, physics plz or how can I attach picture here ????
*Wednesday, June 12, 2013 at 5:45am by Maryam*

**Urgent help calculus**

you have a rectangle with height 5 and width 8-x. So, 5(8-a) = 20 8-a = 4 a = 4 No need for calculus here!
*Wednesday, November 28, 2012 at 11:40am by Steve*

**Calculus**

Hello? This is calculus. Have you forgotten you algebra I? y^4 = y^2 y^4 - y^2 = 0 y^2(y^2-1) = 0 ...
*Monday, October 1, 2012 at 3:00pm by Steve*

**calculus**

x=3 by calculus you should know about straight lines.
*Tuesday, December 18, 2012 at 4:41pm by Steve*

**Calculus some1 plz!!!!**

sadly, it didnt work :( thanks for trying
*Monday, March 14, 2011 at 7:47pm by yolana*

**Calculus...plz help!!**

find dy/dx of xsiny-ycosx=1
*Sunday, October 7, 2012 at 10:26pm by Liz*

**Calculus-PLZ HELP! =)**

does the sum 3/(2^(n)-1) converge or diverge? n=1--->infinity
*Tuesday, March 26, 2013 at 10:10am by Sara*

**Calculus-PLZ HELP! =)**

did you do the zero test? I am not certain I understand your difficulty.
*Tuesday, March 26, 2013 at 10:10am by bobpursley*

**Python programming Language**

Hello, plz hav bin lookin for an answer to dis question too.. Am a student studying software engineering in india, plz mail me if you got any answer plz forward to cooproton@gmail .. Thanx, I'ld really appreciate it
*Friday, December 27, 2013 at 3:15am by gabriel*

**Language arts plz help~!**

steve got the right answer for 2 I just did it it was C
*Thursday, April 25, 2013 at 3:53pm by yo mama*

**Homework help plz( Steve or Reiny)**

Thankyou, I posted some other questions to.
*Thursday, February 20, 2014 at 1:39pm by Gabby*

**Calculus**

where do you get stuck? By the time you get to calculus, doing something like expanding a product of polynomials or evaluating f(1) should be no problem.
*Saturday, February 11, 2012 at 12:28pm by Steve*

**Calculus**

calculus? more like algebra I. anyway, if the original price is P, 1.064P = 2128.00 P = 2000
*Sunday, November 4, 2012 at 1:23pm by Steve*

**Calculus **

And how is this calculus? Try to stay on topic.
*Wednesday, September 21, 2011 at 12:05pm by Steve*

**calculus**

derivative of (3x+2)^6- 8(7x^2+9)^4 all cube rooted! plz help!
*Sunday, March 3, 2013 at 7:31pm by Anonymous*

**Steveeee help plz**

?? draw a picture. you have a rectangle of height 4 and width 4. Area = 16.
*Wednesday, November 28, 2012 at 12:39pm by Steve*

**7th Grade Math ~Multiplying Polynomials**

Reiny, Ms.Sue, Steve could you help plz?
*Tuesday, May 14, 2013 at 8:56pm by Gabby*

**Language arts plz help~!**

actually I think Steve is correct for number 2 because it has stage directions.
*Thursday, April 25, 2013 at 3:53pm by BallaWitSwagg*

**Math help plz check my answers!**

It is, in fact, A a rectangle can be long and skinny, 4 sides not equal.
*Monday, March 10, 2014 at 4:34pm by Steve*

**Plz, plz help! SS**

Can you plz refer me to anything? oh can you check my answer for #1: Industries developed way quicker because they began using coal instead of wood and because of various technological developments such as the use of steam engines to power machines instead of manual labour.
*Wednesday, February 5, 2014 at 4:29pm by Anonymous*

**Calculus (help steve)**

Oops. |a+b| = 24
*Friday, June 28, 2013 at 4:03pm by Steve*

**computer,plz...give me answer fast**

but there must be any reason why people use cd rom instead of floppy disk plz...anyone can give me the exact answer soo plz give me as soon as possible...
*Monday, November 29, 2010 at 1:27am by sweety*

**Calculus - HELP plz!**

Find all of the first partial derivatives of f(x,y,z)=arctan y/xz
*Sunday, June 2, 2013 at 2:57pm by Sara*

**Math help algebra HELP plz**

d+q = 45 10d+25q = 765 24 dimes, 21 quarters
*Thursday, December 13, 2012 at 11:48am by Steve*

**AP Calculus - typo**

oops. Top method is using shells, but as a clever calculus student, I'm sure you figured that out! ☻
*Sunday, April 22, 2012 at 11:05pm by Steve*

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