Saturday

April 19, 2014

April 19, 2014

Number of results: 52,014

**Precalc**

Hello, good afternoon. I need help with my precalc hw. we are learning about finding zeros I dont which method I should use for this problem: if i is a zero of x^3+3x^2+ix+(4+i) what do i do? synthetic divison? or long division? when i did long division i got a werid ...
*Tuesday, October 14, 2008 at 4:06pm by Samya*

**science**

okay i have the same hw too! i have managed to do most of it but i am stuck on the big idea of energy! i really need help. whyu do teachers give hw that people can't do!!! lmao xx
*Friday, October 20, 2006 at 2:34pm by laura <3*

**Precalc, i really don't get my hw**

WOAH. how did u know how to do that? like, waht is the rule? is gedunken a person?
*Tuesday, October 14, 2008 at 4:16pm by Samya*

**the big idea of energy**

omg!! lol i got da ear defenders hw now!! ive gt no idea ov wat 2 do!! HELP!!
*Tuesday, December 5, 2006 at 2:18pm by Coco*

**Precalc, i really don't get my hw**

how do i do this? factor x^4-x^2-20 over real and complex numbers I tried to do synthetic, but it doesnt work.=(
*Tuesday, October 14, 2008 at 4:16pm by Samya*

**Precalc, i really don't get my hw**

Gedunken. (x^2-5)(x^2+4) Now each of those can be factored, the first give real, the second imaginary roots.
*Tuesday, October 14, 2008 at 4:16pm by bobpursley*

**hw**

concentrated sulfuric acid has a density of 1.84 g/ml. calculate the mass in grams of 1.00 liter of this acid. how to solve this?
*Thursday, September 22, 2011 at 5:42pm by hw help ASAP*

**Precalc HW (NO IDEA HOW TO SOLVE)**

Low Earth orbiting satellites orbit between 200 and 500 miles above Earth. In order to keep the satellites at a constant distance from Earth, they must maintain a speed of 17,000 miles per hour. Assume Earth's radius is 3960 miles. a. Find the angular velocity needed to ...
*Monday, November 19, 2007 at 7:19pm by Amie*

**the big idea of energy**

omg i cant believe i have the iron and sulphur hw 2 and i am sooo stuck on the big idea of energy i dunno what 2 say arrrrgh
*Tuesday, December 5, 2006 at 2:18pm by confused*

**Social Studies 7R - DBQ Essay Check**

Thank You! :) Finally! I'm done with all of my hw u kno i had hw for all of my classes 2nite (besides content support, gym and orchestra) i had hw for sci, math, eng, facs, and ss thanks for helping me w/ my hw have a wonderful night see u online 2morrow
*Monday, February 13, 2012 at 8:57pm by Laruen *

**the big idea of energy**

i get da big idea of energy but nothin else 2 do wit ma hw! magnesium burning!
*Tuesday, December 5, 2006 at 2:18pm by Anon*

**precalc**

do you have an idea how i can find it
*Tuesday, December 15, 2009 at 7:36pm by john *

**the big idea of energy KS3**

what is the big idea of energy? To A. Einstein, it was that Energy and Mass are equivalent, and that the sum total of both, with a factor called entropy, is constant in the universe. what is the big idea of energy i need help on finding out what the big idea of energy is? ...
*Sunday, October 22, 2006 at 3:29pm by blue babe*

**Science 8R - HW Help! **

Science 8R HW - Using the steps of the Scientific Method solve a problem that you may have (for example, 1. How can I get my little brother to stop eating my homework) I can't think of one.... please help! any ideas or suggestions???
*Wednesday, September 19, 2012 at 8:48pm by Lauren *

**the big idea of energy**

LOL omf this hw is so hard i hav no clue!! im doin a task were u hav 2 include da big idea of energy in digestion HAHA
*Tuesday, December 5, 2006 at 2:18pm by tash*

**Precalc HW (NO IDEA HOW TO SOLVE)**

The key relationship is linear velocity = angular velocity x radius, a) since the satellite is 200 miles above the earth, the radius would be 4160 miles. lin. vel = ang vel. x radius 17000 = av(4160) 4.07 = av so the angular velocity would be 4.07 radians/hour (remember that ...
*Monday, November 19, 2007 at 7:19pm by Reiny*

**the big idea of energy**

please help me to do ear defender hw
*Tuesday, December 5, 2006 at 2:18pm by rayan*

**the big idea of energy**

i dnt gerrit and i need 2 do it on my hw 2-magnesium & oxegen
*Tuesday, December 5, 2006 at 2:18pm by Anonymous*

**PRECALC HELP!!**

Actually, I believe they want a different answer for each child. I didn't account for that, so I have no idea.
*Monday, November 19, 2007 at 6:37pm by Michael*

**the big idea of energy**

we all have the same hw and none of us know how to do it..aaaagggh
*Tuesday, December 5, 2006 at 2:18pm by anonymous*

**math**

i need help quick i have no clue how to do these problems and its hw! this is an example of the hw -w-5+5(5w+9) if w =1
*Tuesday, October 23, 2007 at 11:02pm by Arely*

**precalc**

solve x/x^2-4 - 1/x+2=2
*Wednesday, December 7, 2011 at 2:53pm by 95*

**the big idea of energy**

lol i have da ear defenders hw to i have no clue wat to do it is so hard!!!!!!!!!!!!!!!!!!!
*Tuesday, December 5, 2006 at 2:18pm by charlotte*

**Precalc**

Plug in N and t and solve for k! ln280=(ln250)*k*(10) Then, plug in the k value and N=2 and solve for t!
*Monday, December 20, 2010 at 8:29pm by TutorCat*

**PLEASE HELP! this is for tomorrow!!! English hw**

My hw says this: what is the question and answer flow for an exclamatory sentence? also... article adjective can be called?
*Tuesday, September 25, 2007 at 8:23pm by Mathilde*

**precalc**

Solve sinx+cosx=0 Thanks!
*Thursday, March 6, 2008 at 6:51pm by Andrea*

**precalc**

1. Solve |2x + 5|< 9
*Tuesday, November 3, 2009 at 1:20pm by kim*

**ALGEBRA!!**

i was looking for help ... not to solve my hw. -.-
*Thursday, October 7, 2010 at 2:09pm by natali*

**PreCalc**

Oops, I meant "1/R=1/2.3+1/x solve for R"
*Wednesday, December 1, 2010 at 9:15pm by Schnitzel*

**precalc**

How do you solve log5 sqrt125?
*Tuesday, April 26, 2011 at 5:55pm by Ashley *

**hw help**

what is N*.40=20 solve for N
*Tuesday, September 13, 2011 at 8:57pm by bobpursley*

**PreCalc**

How do i solve for the variable 3x= sqrt5x+1
*Wednesday, December 12, 2007 at 6:15pm by LT*

**PreCalc**

Solve for the variable m^2 + 2m +3 > = 0
*Wednesday, December 12, 2007 at 6:15pm by LT*

**precalc**

how do u solve for this? sqrt(-10i+12)
*Tuesday, October 14, 2008 at 5:12pm by Samya*

**precalc**

Solve log subscript4 112 = x.
*Wednesday, September 1, 2010 at 9:16pm by Anonymous*

**Precalc**

(2^(x))(5)=10^(x) steps too please how to solve
*Wednesday, February 2, 2011 at 10:06pm by Amy~*

**algebra**

Solve the indicated variable: 1. Volume of a cone: solve for h: V=¨ir^2h/3 2. Temperature formula: solve for C: F=9/5C+32 pleaseeeee help me solve these! plzzz! i have nooo idea how to do these. THANKS! =)))
*Sunday, September 20, 2009 at 4:34pm by kitty kat*

**precalc**

solve the system of equations: x^(2)+y^(2) = 12 xy = -4
*Thursday, April 7, 2011 at 12:53am by Haley*

**precalc**

solve 5^y=4^y+3.Round your answer to the nearest tenth.
*Saturday, January 14, 2012 at 6:26pm by 95*

**Math**

Given g(x) = print_coeff(m,1)x print_const(b), find g(print_coeff(n,1)a) I was told that the answer for this is a. However, I have no idea how to solve it. Please help me understand. I have no idea how to interpret what you have written. It is not standard algebraic notation. ...
*Friday, August 10, 2007 at 11:39pm by Doralis*

**Precalc.**

solve the equation on the interval [0,2pi) sin^2x=1
*Friday, March 19, 2010 at 12:29am by Anonymous*

**Math- Precalc**

could someone please help me solve this problem... e^x - 12e^(-x) - 1
*Monday, November 15, 2010 at 7:16pm by Alex*

**Precalc**

how to solve for x: 500e^(0.3x) = 600 Steps please.
*Wednesday, January 26, 2011 at 11:25pm by Amy*

**hw help ASAP**

8.00in^3 to ml please show me how to solve this
*Monday, September 19, 2011 at 12:40pm by bb222*

**Precalc (complete the squares)**

(2x+1)^2 +4=0 solve the equation. help please :(
*Friday, November 11, 2011 at 3:17pm by Cindy*

**Precalc**

x^2 - 4 x - 4 = 8 x^2 - 4 x - 12 = 0 solve quadratic then other possible solution x^2 - 4 x -4 = -8 x^2 - 4 x + 4 = 0 (x-2)(x-2) = 0 x = 2
*Thursday, December 20, 2012 at 8:18pm by Damon*

**Math- Precalc**

I assume the complete question is: solve for x: e^x - 12e^(-x) - 1 = 0 Substitute y=e^x, and e^(-x)=1/e^x=1/y. e^x - 12e^(-x) - 1 =0 becomes y-12/y-1 = 0 Since y=e^x, y>0 (i.e. y≠0) y²-y-12=0 Factor and solve the quadratic. Reject the negative root, since e^x cannot...
*Monday, November 15, 2010 at 7:16pm by MathMate*

**PreCalc**

Someone please help me solve this equation for y. (x^2)(y^2)+xy=1 I need to solve for y so that i can graph it! y^2 + y/x - 1/x^2 = 0 Treat 1/x as b and -1/x^2 as c in the quadratic equation ax^2 + bx + c = 0 There are two solutions y = [-1/x + sqrt(1/x^2 + 4/x^2)]/2 and y...
*Monday, February 26, 2007 at 9:30pm by Jill*

**Chemistry HW HELP**

Use PV = nRT and solve for V (in L) and convert to mL.
*Thursday, July 18, 2013 at 12:34am by DrBob222*

**Precalc**

Solve the following equation for x in terms of ln and e. (2e^3)-6-(16e^-x)=0
*Monday, March 3, 2014 at 6:57pm by Aly*

**PreCalc**

Type "1/R=1/2.3+1/x solve for x" into WolframAlpha . com and click "Show steps"
*Wednesday, December 1, 2010 at 9:15pm by Schnitzel*

**Precalc**

There's f(x) = (2x+3)/(x+4) and g(x) = (4x-3)/(2-x) Solve for x in f(g(x)) I tried this but I could not end up with the answer being x
*Thursday, January 6, 2011 at 9:18pm by Anonymous*

**precalc**

solve the following logarithmic equation: 2lnx= log base e^3 343
*Sunday, June 30, 2013 at 3:53pm by Anonymous*

**Trig/Precalc**

the ratio of height to shadow length is the same, so h/3.5 = 8/5 I imagine you can solve that for h.
*Sunday, November 24, 2013 at 6:06pm by Steve*

**Math**

Precalc stuff.. square root of z-1= square root of z +6 are you solving for z? square both sides then solve for z. that's my problem, i'm not sure how to solve for z. i need a process. it's not in my book or anything.
*Wednesday, March 7, 2007 at 5:21pm by Blondie*

**MEGSSS (math)**

im confused too,but in megsss, there is no mercy! where are you guys from, and how can i connect to you too, for hw help? it would be great for a quick responce to come my way, because my hw is due tomorow. eekk! help please!
*Tuesday, January 6, 2009 at 8:31pm by adeline*

**PreCalc**

Solve the system by the addition method -10x^2 + 10y^2-320=0 30x^2 + 6y^2 - 336 = 0
*Tuesday, December 11, 2007 at 10:58pm by LT*

**algebra ll**

IN my HW it says: Solve each equation.State the number and type of roots. -9x-15=0
*Sunday, April 6, 2008 at 4:06pm by Yaili*

**Everybody hw help who go facebook**

I dont use facbook.but hw essay topic what should people do to get rid out of facebook? What should they do if they r addicted to it? Ples helppp
*Wednesday, May 1, 2013 at 10:12pm by Nisha*

**Precalc**

I have a couple questions, I need to know how to solve these type of problems. X^2 -4< X + 16 5/n+2 - 5/n = 2/3n 2X^3-x^2-6X + 1/ X^2 + 5x - 8 1) rearragne the terms to get x^2-x-20<0 (x-5)(x+4)<0 which means that one term can be negative, or -4<x<5 check that. ...
*Thursday, June 14, 2007 at 5:47pm by <3 A*

**Precalc**

1. Find the exact value 3sin(invertangent (-1)) I got 0. Given 0<x<orequalto 1, determine the value of inversine (x) + inversetan (squareroot(1-x^2)/x) I really have no idea how to do that. I am trying to draw a diagram but cant figure it out. Thanks!
*Monday, February 11, 2013 at 6:53pm by Rebekah*

**Trig/Precalc**

solve 6=e^0.2t Round your answer to the nearest hundredth Someone please help me - I don't understand this problem at all!
*Thursday, April 19, 2012 at 12:55pm by tabby*

**Science 8R - HW Help!**

I know the Scientific method it's just that I can't think of a problem I can solve How to get my homework done before 8pm? is that good????
*Wednesday, September 19, 2012 at 8:48pm by Lauren *

**Social Studies **

oh never mind i didn't see that on my hw now I found the answer we r doing a DBQ on the native americans, we are done with unit so as a project/essay we have to do a DBQ for hw we just have to finish in documents, we have 6 documents my teacher made the document packet it's ...
*Thursday, October 27, 2011 at 6:31pm by Laruen *

**precalc**

Hi. Can someone help me with this? Simplify: (sin^2x)(cos^2x)+(sin^4x) The answer is sin^2x, but I have no idea how to get there! Thanks!
*Monday, February 18, 2008 at 7:45pm by Andrea*

**precalc: elimating the parameter**

Solve each equation for T from the first: 3T = x+4 T = (x+4)/3 from the second 2T = -y + 1 T = (-y+1)/2 but T=T (x+4)/3 = (-y+1)/2 cross-multiply and simplify to get 2x+3y = -5
*Wednesday, July 9, 2008 at 9:21pm by Reiny*

**Math - PreCalc (12th Grade)**

As explained , C, D and E cannot be correct. A + B + C = 15000 A = B + C + 3000 3A + 2B + 2C = 30000 Solve these equations to get A, B and C
*Wednesday, March 19, 2014 at 10:26am by Shawna*

**the big idea of energy**

Yep... I'm using this stupid textbook and we're studying 8F. ARGH. Nope, I haven't gotten the 'Ear Defenders' hw yet but I guess I'll soon will. I am so dead...what is the 'BIG IDEAD OF ENERGY' anyway? :/ So need help!!!
*Tuesday, December 5, 2006 at 2:18pm by Homework Heaped*

**PreCalc**

I'm given some sort of curve with these points defined (-pi/2 , -1) and (pi/2,1) ok now I have to do this f(x+2) so I have to shift all the x cordinates over two... how do I do this -pi/2 - 2
*Monday, November 16, 2009 at 5:58pm by PreCalc*

**Math 8R - HELP! (PLZ!)**

can someone please help me because I'm really have a hard time with my homework. I understand some it but .... some problems are in different forms... and I looked in my notes (actually we don't have any notes JUST EXAMPLES! :( ) and..... omg it's hard please someone help me ...
*Thursday, January 31, 2013 at 9:23pm by Lauren *

**Science (big idea of energy)**

errr ive got the sme friggin hw aswell and the worst thing is is tht we av to do it for our assesment enyways the reason they put the cotton wool is to stop the smoke getting out btw im in yr 8 so u no i migh be rong!!!
*Monday, October 1, 2007 at 11:36am by Annalisia*

**Precalc**

how to solve 5(2^(3x)) = 8 Steps too please answer is ln 1.6 / 3 ln 2
*Wednesday, January 26, 2011 at 8:21pm by Amy*

**Math**

h=at-.25vtsquared ,solve for a Please help me, I have no idea how to solve!
*Sunday, October 4, 2009 at 3:17pm by Petronella*

**Algebra**

How would I solve: 1/3(D+3)=5 I know you need to find the recipicile, but I have no idea how to solve this.
*Sunday, October 17, 2010 at 6:12pm by June*

**Precalc: Logarithms**

Solve for x? xln(x) + 1 > x + ln(x) e^1/x > 1 Any help would be appreciated. THANK YOU!
*Sunday, August 3, 2008 at 10:20pm by Joe*

**Precalc**

Solve for x log[1/3](x^(2) + x) - log[1/3] (x^(2) - x) = -1 Steps too please. so far I tried this and I got 3 = (x+1) / (x-1)
*Thursday, January 27, 2011 at 1:16pm by Amy*

**precalc**

Solve Absolute Value 2x+5Absolute Value5 is less than 9 |2x + 5|< 9
*Tuesday, November 3, 2009 at 1:20pm by kim*

**Precalc with Trig**

What value(s) of x from 0 to 2pi solve the following equation: cos squared x - cos x - 6 = 0
*Thursday, April 11, 2013 at 2:04pm by Natalie*

**Math - PreCalc (12th Grade)**

Use the inverse matrix to solve this system of equations: 4x+3y=7.5 7x+9z=14 4y-z=8.3 4,3,0 7,0,9 0,4,-1
*Friday, March 21, 2014 at 9:20am by Shawna*

**Precalc**

1. Solve log (4x) = log (2) + log (x-1) the fact that this is x-1 and not + is really messing me up because i keep getting a negative number and that isnt possible 2. Solve: absolut value of(x^2 -4x-4) = 8 thanks so much!!! I have been studying and my final is tomorrow. these ...
*Thursday, December 20, 2012 at 8:18pm by Rebekah*

**chemistry**

what is the molarity of a solution containing 1 mole of urea per litre of the solution ? Hw to solve this
*Thursday, July 12, 2012 at 3:04pm by star*

**Check my precalc**

what is the f inverse of f(x)= ln(x-3) I got y= e^x - 4 Solve 8 times 10^(2x-7)=3 I do not know how to do this. Do i get 8 and 10 with the same base? How? Thanks!
*Sunday, November 18, 2012 at 8:46pm by Rebekah*

**precalc/trig**

Solve the Logarithmic equation algebraically. Give an Exact Answer and an approximation for x to four decimal places. 20 log(2x+2)=45
*Monday, December 5, 2011 at 2:01pm by Alexander*

**chemistry hw please help**

PV=mass/molmassHe * RT solve for mass. I would start by changing ft^3 to m^3
*Tuesday, November 10, 2009 at 3:42pm by bobpursley*

**Precalc**

Solve for x log[1/3](x^(2) + x) - log[1/3] (x^(2) - x) = -1 Steps too please. so far I tried this and I got 3 = (x+1) / (x-1) I asked this question before, but what would x= ?
*Thursday, January 27, 2011 at 7:04pm by Amy*

**precalc**

I assume you know enought calc to take the derivative. y'=slope=-4x=4 y=4x+b solve for b a the point, and you have the line
*Friday, April 1, 2011 at 7:02pm by bobpursley*

**CHEMISTRY**

concentrated sulfuric acid has a density of 1.84 g/ml. calculate the mass in grams of 1.00 liter of this acid. how to solve this?
*Thursday, September 22, 2011 at 5:42pm by hw help ASAP*

**PreCalc**

Use the following conditions to create a sketch of the function by hand. a. f(x) is increasing from (-infinity,-4)union(-4, infinity) b. there is a vertical asymptote at x=-4 c. There is a horizontal asymptote at y=2 d. f(0)=-5; f(1)=-3; f(3)=1 I have an idea of what this ...
*Wednesday, September 30, 2009 at 10:07pm by MUFFY*

**Chemistry**

First, you omitted the units on the 9.03 WHAT in a 0.8112 WHAT container. I'm confused because you are confused. There is nothing here that you need an idea about. You have a and b, R, T, and n. Solve for P by van d equation, then use the usual PV = nRT and solve for P. Then ...
*Saturday, January 14, 2012 at 5:46pm by DrBob222*

**Physics/Mechanics**

HW 7_2_2 576 -576 281.33 -281.33 HW 7_3_1 -P*x
*Tuesday, June 18, 2013 at 9:24pm by simonsay*

**MIT 2.01X**

HW 7_2_2 576 -576 281.33 -281.33 HW 7_3_1 -P*x
*Sunday, June 23, 2013 at 4:47pm by simonsay*

**Mechanics/Physics**

HW 7_2_2 576 -576 281.33 -281.33 HW 7_3_1 -p*x
*Sunday, June 30, 2013 at 5:48pm by Jon*

**MIT 2.01X**

HW 7_2_2 576 -576 281.33 -281.33 HW 7_3_1 -P*x
*Tuesday, June 25, 2013 at 9:17am by simonsay*

**Physics Help**

(A)Ht=Hs•ζ+(1-ζ)Hw, where Ht = total (actual) enthalpy (kJ/kg), Hs = enthalpy of steam (kJ/kg), Hw = enthalpy of saturated water or condensate (kJ/kg) Using steam-pressure table http://enpub.fulton.asu.edu/ece340/pdf/steam_tables.PDF we can find the magnitudes for p=...
*Sunday, July 14, 2013 at 5:35pm by Elena*

**physics**

A persn carries a 218N suitcse up a stairs.the displcment is 4.20m vertically & 4.60m horizntally. A.hw much work does the person do on the suitcase B. If the prsn carries the same suitcse dwn.hw much work does he do
*Monday, August 15, 2011 at 2:29am by Luc*

**Algebra 2**

How do I answer this f(x) = x - 3 (x + 4)^(1/2) and am asked how to solve for x when y = -5 I have no idea how to do this and know that I could just solve it by guess and checking but I want to know how to do this algebraically when plugging in the -5 and trying to solve for x...
*Tuesday, May 26, 2009 at 5:39pm by Dylan*

**Maths**

solve the following pair of simultaneous equation: (x/a)+(y/b)=1 (x/b)+(y/a)=1 can someone help please?i have no idea how to solve it =( x/(ab) + y/b^2 = 1/b x/(ab) + y/a^2 = 1/a Subtract one from the other y(1/b^2 - 1/a^2) = 1/b - 1/a y(1/b + 1/a)(1/b - 1/a) = (1/b - 1/a) ...
*Wednesday, July 11, 2007 at 4:18am by Emma*

**algebra 2**

yes, no idea, or yes, here's my idea? If no idea, look at the last two problems. There must be some first step you could make.
*Thursday, October 24, 2013 at 5:12pm by Steve*

**Algebra**

Solve 3x +1 < 5 or 3x +1 > 4 By saying "solve," is it asking for me to show it on a line and in interval notation? Here's another: f(x) < 3 and f(x) > 4, where f(x) = 1/2x - 7 I have no idea how to solve this! Please walk me through it! Thank you so much!
*Monday, January 26, 2009 at 4:19pm by Harper*

**Geometry**

I have no idea how to solve this problem. The question says: Determine whether the points A(4,5), B(-3,3), C(-6,-13) and D(6,-2) are the vertices of a kite. Explain your answer. Can you please help me with the steps to solve it and understanding it.
*Monday, February 18, 2008 at 8:23pm by Avalon*

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