Number of results: 47,047
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
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
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
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
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 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
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
i dnt gerrit and i need 2 do it on my hw 2-magnesium & oxegen
Tuesday, December 5, 2006 at 2:18pm by Anonymous
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
Physics
who the !@#$%^& is maintaining this blog....cant u solve anything i see all the question in HW for help....!!!1 plz help...!!! i u cant solve them eat !@#$%^& do not depend on others for everything
Tuesday, April 9, 2013 at 2:44pm by !@#$%^&er
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
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
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
How do you solve log5 sqrt125?
Tuesday, April 26, 2011 at 5:55pm by Ashley
PreCalc
Oops, I meant "1/R=1/2.3+1/x solve for R"
Wednesday, December 1, 2010 at 9:15pm by Schnitzel
precalc
1. Solve |2x + 5|< 9
Tuesday, November 3, 2009 at 1:20pm by kim
precalc
Solve sinx+cosx=0 Thanks!
Thursday, March 6, 2008 at 6:51pm by Andrea
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
hw help
what is N*.40=20 solve for N
Tuesday, September 13, 2011 at 8:57pm by bobpursley
ALGEBRA!!
i was looking for help ... not to solve my hw. -.-
Thursday, October 7, 2010 at 2:09pm by natali
Precalc
(2^(x))(5)=10^(x) steps too please how to solve
Wednesday, February 2, 2011 at 10:06pm by Amy~
precalc
Solve log subscript4 112 = x.
Wednesday, September 1, 2010 at 9:16pm by Anonymous
precalc
how do u solve for this? sqrt(-10i+12)
Tuesday, October 14, 2008 at 5:12pm by Samya
PreCalc
Solve for the variable m^2 + 2m +3 > = 0
Wednesday, December 12, 2007 at 6:15pm by LT
PreCalc
How do i solve for the variable 3x= sqrt5x+1
Wednesday, December 12, 2007 at 6:15pm by LT
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 5^y=4^y+3.Round your answer to the nearest tenth.
Saturday, January 14, 2012 at 6:26pm by 95
precalc
solve the system of equations: x^(2)+y^(2) = 12 xy = -4
Thursday, April 7, 2011 at 12:53am by Haley
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
Precalc (complete the squares)
(2x+1)^2 +4=0 solve the equation. help please :(
Friday, November 11, 2011 at 3:17pm by Cindy
Precalc
how to solve for x: 500e^(0.3x) = 600 Steps please.
Wednesday, January 26, 2011 at 11:25pm by Amy
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.
solve the equation on the interval [0,2pi) sin^2x=1
Friday, March 19, 2010 at 12:29am by Anonymous
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, ...
Monday, November 15, 2010 at 7:16pm by MathMate
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
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
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
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
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
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
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&...
Thursday, June 14, 2007 at 5:47pm by <3 A
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
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
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
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
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
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
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...
Thursday, October 27, 2011 at 6:31pm by Laruen
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
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 ...
Thursday, January 31, 2013 at 9:23pm by Lauren
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
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: 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
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
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
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
precalc
Solve Absolute Value 2x+5Absolute Value5 is less than 9 |2x + 5|< 9
Tuesday, November 3, 2009 at 1:20pm by kim
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
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
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
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
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
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
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
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
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. ...
Saturday, January 14, 2012 at 5:46pm by DrBob222
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
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
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
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...
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
calculus
1) Solve for x in terms of k: log3(x) + log3(x+7) = k; 3 is the base 2) e^(x+5) = e^(x) + 6, solve for x. Please help, I have no idea how to do these and I've tried several times!
Saturday, October 2, 2010 at 6:33pm by Cornelius
the big idea of energy
Imahh doinn thee Journey of a Cheese Sandwich homework and I havv no idea what it means by The Big Idea of Particles or The Big Idea of Energy. I've looked on the web but I keep getting confused. HELP! :S
Tuesday, December 5, 2006 at 2:18pm by Anon
Precalculus
Try some of the online sources listed here. http://mathforum.org/library/topics/precalc/
Friday, January 8, 2010 at 2:40pm by Ms. Sue
precalc pre ap
If theta is a rotation angle that terminates in quadrant ll and sin of theta is 5/13, find cos of theta and tan of theta. Use the first Pythagorean identity to solve for cos of theta and use quotient identity to solve for tan of theta.
Sunday, December 2, 2012 at 6:55pm by lore
Alg 2 - Math
need help with hw... Use Gauss-Jordan to solve 3x – 2y + z = 6 3x + y – z = -4 -x + 2y – 2z = -8
Wednesday, April 20, 2011 at 12:18am by Wenny12
Please help me solve it. Math
solve for the value of x: 6log (x^2+1)-x=0. please help me because I do not have any idea in this topic.
Monday, April 8, 2013 at 9:33pm by Jeconiah
the big idea of energy
This whole level 6 Big idea of Energy thing is a load of crap. My teacher is making me do lvl 6 and I have no idea what da big Idea of Energy is (or I didn't till i read EELLLLIIIEE's comment, thanks by the way)
Tuesday, December 5, 2006 at 2:18pm by Savage3e
math
not sure if this had to do with math but my professor gave us this last hw assignment that i don't understand at all. It has to do with the grade scaling he does. 4x Exams = 37450 HW = 9362 Final = 16385 Lab = 23407 Recitation = 7022 Total Points = 93626 He asks whats the ...
Thursday, July 5, 2012 at 8:35pm by Anonymous
check my precalc
#1. solve x^2-1<0 I got (-1,1) #2 x(x+1) >20 I got (-infinity, -4) U (5,infinity) #3 what is the domain of this function? f(x)= squre root of (x-3x^2) i got [-1/3,0] thanks!!!
Monday, October 1, 2012 at 9:53pm by rebekah
are there any other free hw help sights?
are there any other free hw help sights?
Thursday, September 13, 2007 at 6:01pm by help on hw
Trig/PreCalc
Teach me how to express 5sqrt3 - 5i in polar form please. I don't want you to do the work for me. Just show me the steps I need to do the work properly on my own. Otherwise I will not pass this class or the exam when I enter college, and I do not want to retake PreCalc. ...
Friday, April 13, 2012 at 3:44pm by tabby
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