Monday

November 24, 2014

November 24, 2014

Number of results: 37,459

**Pre-Calculus**

Find the rectangular equation of the curve whose parametric equations are x=-2sin t and y=cos t, where 0 less than or equal to tis less than or equal to 2pi. How do I do this??? Thanks for all of your help!!
*September 27, 2008 by Lucy*

**Chemistry **

Balance the equation in aqueous basic solution: NO2-(aq) + Al(s) → NH3(aq) + AlO2-(aq) I know how to balance equations in acidic solutions, but I get lost doing the basic one, please help?
*May 31, 2011 by Jessie *

**Pre-Calculus**

Could you please explain how to use a matrix (matrices) to solve a system of linear equations (two variables)? My book doesn't explain it in a way I can understand. Please and thank you.
*January 24, 2013 by Caroline*

**chemistry**

0.125g of sodium dichromate is to be reacted wtih 0.025M potassium iodide. How many mLs of the potassium iodide solution will be needed. (Use your balanced equations above.)
*June 17, 2013 by Annie*

**AP Calculus**

I asked this yesterday and someone answered. but i didn't understand the explanation.. Two circles of radius 4 are tangent to the graph of y^2=4x at the point (1,2). Find equations of these two circles. I got (x-1)^2+(y-2)^2=16 and (x-4.36)^2+(y+1.36)^2=16
*September 12, 2013 by Sarah*

**writing and linear equations**

the measure of one angle is described as twelve more than four times a number. its supplement is twice as large. find the measure of each angle.
*February 10, 2014 by mari*

**CHEMISTRY**

Determine that which directions ( left or right ) shift , of these following equations according to the Entropy 1) HCl (l) <==> HCl (g) 2) C6H12O6 (aq) <==> C6H12O6 (s) 3) 2NH3 (g) <==> N2(g) + 3H2(g) 4) 3C2h$(g) <==> C6H12 (l)
*July 14, 2014 by MAD*

**Math Question**

Laura was given two points (3,-2) and (-2,4) and was asked to create an equation that represents the line that passes through these points. Write two equations that she could use.
*November 7, 2014 by Kalani*

**algebra**

Lisa has twice the amount of purses as Sally. If Sally has 6 purses, how many does Lisa have?=6x+6 algebra - Ms. Sue, Tuesday, October 27, 2009 at 5:44pm 2 * 6 = ? algebra - Jarod, Tuesday, October 27, 2009 at 5:59pm Sorry it is 12 so would I 6x2=12 or 6*2=x x=12
*October 27, 2009 by Jarod*

**math**

Use algebra pieces and mental arithmetic to determine four consecutive odd numbers who sum is 64. Sketch and label your algebra piece model and explain how you solved the problem.
*June 2, 2012 by marcus*

**maths**

I am really facing difficulty in maths. I do my best to improve in maths but after entering in the examination hall during my exams, i just get confused. please help The proper name for the subject is mathematics or just "math" for short. Calling it "maths" calls attention to ...
*June 14, 2006 by devendri*

**physics**

An electron and a proton are each placed at rest in an external uniform electric field of magnitude 520 N/C. Calculate the speed of each particle after 48 ns. None of the equations I have seem to help me. What can I use to solve this problem? I figured it out, but thanks anyway.
*April 12, 2007 by Mischa*

**mathematics**

seeds of type a and b are sold in packets each containing both type a and b seeds at last twice the number of twice b seeds as there are in type a seeds and no more than 12 seeds a) using a scale of 1cm for each unit on both axis draw a graph n the axis to represent the ...
*February 26, 2008 by Keisha*

**Algebra**

A baseball player's batting average is the number of hits the player has divided by the number of at-bats. At the beginning of a game, a player has a batting average of .360. During the game, the player gets 3 hits during 5 at-bats, and his batting average changes to .375. a. ...
*January 16, 2013 by Amie*

**Mathematics**

A Ladder AB, of length 13m, rests against a vertical wall with its foot on a horizontal floor at a distance of 5meters from the wall. When the top of the ladder slips down a distance x meters on the wall, the foot of the ladder moves out x meters. Find x. (I couldn't find this...
*March 5, 2008 by Nazharia*

**Algebra**

ello i need help factoring I haven't had factorin sense Algebra one and now am in Algebra two and our school is screwed up were they shove in a year of Euclidean Geometry and Basic Trig inbetween first two years of Algebra... so i need to factor X^2-12X+35 I can sit there for ...
*December 7, 2008 by Algebra*

**math**

For the system of linear equations below, use graphing to determine in which quadrant the solution lies. x+2y=-2 -2x+y=14 Quadrant III Quadrant I Quadrant II Quadrant IV
*April 12, 2014 by sofia*

**Mathematics and Health**

Equal numbers of people die from heart disease as die from cancer, accidents, and diabetes combined. How would you determine this information from the graph? (The number of people who died from heart disease is 30%. The number of people who died from cancer, accidents, and ...
*November 5, 2013 by Anonymous*

**mathematics**

An equilateral triangle with side length 33 is divided into 332 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
*April 30, 2013 by Sambaran G.*

**Math**

Roots Ok, what about roots? Roots of polynomials? Square roots? Cube roots? Terminology, notation, equations using them? Help us out here a little.
*September 5, 2006 by Rorshin*

**Math**

Which of the following are linear equations in x1, x2 and x3? (a) x1 + 5x2 − (2^0.5)x3 =1 (b) x1 + 3x2 + x1.x3 = 2 (c) x1 = −7x2 + 3x3 (d) x1^−2 + x2 + 8x3 =5 (e) x1^3/5 − 2x2 + x3 = 4 (f) πx1 − (2^0.5)x2 + 13x3 = 7^1/3
*October 25, 2011 by Matt*

**math**

(4 − 2x)−2 x=-2 y=4 z=-3 how do you solve this? i have solved it and gotten 6 for my answer many times and it says it's wrong. other equations are (y − z)−3 and (x − 5y)0. i cant get them right
*March 1, 2012 by krysta*

**Business Mathematics**

In finance department of a certain company, there are twice as many men as women and in the marketing department there are ten more men than women. The number of women in both departments is the same and there are two more workers in finance department compared to marketing ...
*April 20, 2011 by Ally*

**Trigonometic**

Solving Trigonometic Equations solve for x : ( by radian) 1)cotx= 3 2)secx = 0.5 <<<and thanks >>> 1) Same as tan x = 1/3. Use a calculator. I get 0.321 radians 2) sec x = 0.5 is not possible. The absolute value of the secant must be one or more. << ...
*April 23, 2007 by abdo*

**Chemistry**

OMG i'm soo screw for chem.. >_<ahhh i wonna drop it soo bad!!! PLEASE help me.... AND THANK U!!! Balance redox equations MnO4 - + HCO2H --> Mn^2+ + CO2 K2S3O6 + KClO + KOH --> K2SO4 + KCL + H2O
*September 25, 2007 by saLIna*

**Data Management gr. 12**

I am so confused about correlation equations. I dont know at all how to use them r= W (x-xXy-y)=Sxy __________________ n *the equation doesnt look exactly like this but it is similar, if i can get any help at all that would be great example question:
*April 24, 2010 by Laurie*

**Chemistry**

How much ammonia is produced if 1.80 m3 of hydrogen reacts with 0.5m3 of nitrogen? Also state which reagent is in excess and by how much? Question is related to the Haber process. Please can anyone answer this for me by 02 July 2010. With all equations. Thanx
*June 30, 2010 by Matt*

**Physics**

A 200 g mass attached to a horizontal spring oscillates at a frequency of 2 Hz. At one instant the mass is at x=5 cm and has a Vx=-30 cm/s.Determine: a) the period ( i got T=.5s) b) the amplitude c) the max speed d) the total energy need equations to solve this, please help.
*July 7, 2010 by Sarah*

**Math**

240 m of fencing material is going to be used to enclose three sides of a rectangular lot. What should the dimensions of the lot be so that the enclosed area is as large as possible? (I'm supposed to solve this using a quadratic equations but I don't know how...)
*August 22, 2010 by Avery*

**math**

List advantages and disadvantages comparing and contrasting solving systems of linear equations with two variables by graphing and by equation method. Explain which method you prefer and why. Support your answer by providing appropriate examples
*December 17, 2010 by Anonymous*

**Calc**

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. y = sin x, y = 0, x = 0 I just need help setting up the formula. So far I got V= the integral from 0 to pi of [(sinx) - 0]dx. Is that correct? Thank you so...
*February 1, 2011 by Erica*

**Chemistry**

Use the bond enthalpies and bond energies from the data book in themochemical equations to calculate the reaction enthalpy of:H2(g) + Br2(g) ->2HBr(g) and show your workings in the question above in an energy level diagram.please..
*July 12, 2011 by Gift*

**physics**

Good study tips for physics? I am having trouble understanding the theory and how to apply it into the equations. People have told me I should not just punch in numbers, but I do not know what to do besides that; I treat it like math.
*September 18, 2011 by Daniel*

**chemistry 105**

Complete and balance each of the following equations, some may have no reactions. NaNO3(aq)+KCl(aq)--> NaCl(aq)+Hg2(C2H3O2)2(aq)--> note that Hg(I)^+1 interacts with another Hg(I)^+1 ion to produce the cation Hg2^2+ (NH4)2SO4(aq)+CuCl2(aq)-->
*October 10, 2011 by julie*

**calculus**

Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. (Round your answer to three decimal places.) y = e^−x y=0 x=0 x=7 I got the answer ~10.783 Idk why it's wrong
*January 22, 2012 by NAN*

**Calculus**

Can someone explain this question to me? What intervals should I use to test whether or not the graph is concave up or down. I know that no points or equations are given so we have to estimate. Here is the URL for the graph. imgur dotcom/FdQCV
*March 3, 2012 by Jake*

**Chemistry**

How to calculate Q in Nernst Equations, we used 0.10M solutions in all of our half cells. Nernst equation: Ecell = E0cell - RT/nF ln Q Overall reactions: Cu(s) + Pb2+(aq) ~ Cu2+(aq) + Pb(s) and 3Pb(s) + 2Al3+ ~ 3Pb2+ 2Al(s) Thank you!
*May 14, 2013 by Chloe*

**Math: Differential Equations**

I'm given y''= sin(x) with the initial conditions of y(0)=0 and y'(0)=2. I've already taken the integral two times to get an answer of y= -sin(x)+3x, however, I'm stuck as to how to make this equation in terms of x=... Please explain, I'd really appreciate it!
*January 14, 2014 by Student*

**chemistry urgent**

I think I balanced these equation right please check and let me know. i am suppose to complete and balance the equations representing the reactions. NaHCO3 (s) + HCL (aq) >>>> NaCl + 2CO+H2O CaCo3 (s) + HCL (aq)>>> CaCl + CO3H Thanks
*April 23, 2014 by jazz*

**Algebra repost for Suzia**

Algebra - Suzia, Thursday, September 27, 2007 at 7:52pm Please explain these problems 5-x-x=-1 a/2+1/5=17 3.5=12x-5x a-4a=2a+1-5a
*September 27, 2007 by Ms. Sue*

**algebra**

ok I have a algebra question how do you find the missing number for 42-9=43-? how do I get the answer and I need to understand it? I think the answer might be 45
*December 5, 2011 by julie *

**Plz Check My Geometry**

Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i think it is. 1.) Given points A(-4, 5), B(2, 3), C...
*June 9, 2010 by Ariel*

**Plz Check My Geometry**

Out of 30 questions these few I struggled with. I put what I feel was right but to be sure I would like some one to check my answers and if there wrong redirect me on how to get the correct answer.( after the = is the answer i think it is. 1.) Given points A(-4, 5), B(2, 3), C...
*June 9, 2010 by Ariel*

**supply and demand**

I'm looking for help on the third part of this question. I've included preceding questions/answers to show where I'm at. I don't know what to do next. Suppose that a market is described by the following supply and demand equations:
*February 17, 2007 by shannon*

**science equations**

a boy standing n a high cliff dives into the ocean below and strikes the water after 2.5 s. what is the boy's velocity when he hits the water? deltav=gxt
*January 24, 2008 by summer*

**Chem**

I'm doing a homework on Translating Word Equations and I wanted to know the answer for this question... Iron(ll) hydroxide reacts with hydrogen peroxide to produce iron(lll) hydroxide. Please help needed!
*March 11, 2008 by Anonymus*

**advanced math**

I'm not sure how to find the line of best fit. I have two equations, linear and quadratic. I graphed them on my calculator, but now I don't know which one is the best fit. Can I tell by the r^2?
*March 17, 2008 by Irene*

**Math**

The sheet is titled Solving Inequalities. I need to solve this question by equivalent equations and show my steps. So, how do I solve 6x<12? Would I divide both sides by 6 meaning x would = 2? or??
*April 9, 2008 by Tyler*

**math**

Last question. If I have found all of the linear equations and have all of the intersection points for this feasible region, how do I calculate the maximum and minimum using the given function f(x,y)=-x+3y?
*December 30, 2008 by ABCD*

**URGENT: Grade 8 Math**

In my math question it says: Multiply. Simplify before multiplying. Use benchmarks to estimate to check the product is resonable. a)3/4 x 8/5 is one of the equations What are benchmarks?
*September 25, 2009 by Molly*

**Chemistry Honors**

I need help balancing equations 1) CH4+O2-->CO2-->+H2O 2) Hf+N2-->Hf3N4 3) Mg+H2SO4-->MgSO4+H2 4) C2H6+O2 -->CO2+H2O 5) Pb(NO3)2 + NaI--> PbI2+NaNO3 6) Fe+O2-->Fe3O4
*October 20, 2010 by S*

**AP Chemistry**

What is meant by minimum and maximum energy problems. Are there different equations to find them. What does this conceptually mean? * This is dealing with quantum chemistry such as plancks equation, and debroglie equation.
*November 18, 2010 by qwerty123*

**alegebra**

amelia gets 4 points for each correct answer and loses 1 point for each worng answer. One her last quiz she earned 50 points and answered 25 questions. write a system of equations
*February 28, 2011 by michele*

**Math Question**

Hi, I need help with a math question. Thank you to whoever helps me! :) When solving a system of 2 equations and 2 unknowns using the substitution method, what is the ideal value of the coefficient of the isolated variable?
*January 7, 2014 by Sara*

**Math: Differential Equations**

I've been stuck on this math hw problem for a while, I was thinking of taking the integral of the equation, but I've been messing up too much that I'm not sure anymore. Q: Is it possible to solve y'=x/(x^(2)-1) for y(1) = 0? Thank you!
*January 15, 2014 by Student*

**james madison high school algebra**

Can anyone help me with Ashworth high algebra 1 part 2 I really need some help I'm not good with math
*May 23, 2014 by val*

**Math (Algebra/Pre-Algebra)**

What is the x-intercept of the line with equation 2y + 3x = 24? What is the x-intercept and how do I find it? I have to show work. Thank you!
*June 4, 2009 by Samantha*

**algebra**

algebra, write a quadratic equation in the variable x having the given numbers as solutions -10, 610
*April 1, 2011 by Shirley*

**8th Grade Algebra Answer Check**

Josh and Racquel sold corn dogs and burritos at the math club fundraiser. The corn dogs(c) cost $.35, and the burritos(b) cost $.75. They sold a total of 600 items, and raised $360. a)Write an equation for the total # of items sold. b)Write and equation for the total cost of ...
*January 25, 2009 by <3Medic+Droid<3*

**Quadratic equations**

How do I write my x intercepts as an ordered pair when my X-Intercepts at X = { 2.64575, -2.64575 }?
*February 18, 2008 by Marysvoice*

**MATH**

Which of the following equations has the given solution set? Solution set: A)-2m + 5 = 2m + 5 B)-2m + 5 = -2m + 5 C)-2m + 5 = -2m - 5 D)none
*March 5, 2010 by nicky*

**Algebra1**

I am solving for linear equations and I'm wondering if I did Step 3 right.. 3x-y=8 x-y=8 Step 1 3x-y=8 3x-y+y=8+y 3x=8+y 3x/3=8+y/3 x=(8+y/3) Step 2 3(8+y/3)-y=8 8+y-y=8 8+2y=8 8+2y-8=8-8 2y=0 2y/2=0/2 y=0 Step 3 x=8+y(0)/3 x=2.6
*April 18, 2010 by Samantha*

**math linear equation**

Solve the linear equations by the matrix method:a+3b+2c=3,2a-b-3c=-8,5a+2b+c=9.solve for a:b:c
*February 7, 2014 by femi*

**Alegbra**

Will be the graphs of each of these equations be perpendicular. 1.y=7x-9 slope=-7 y-intercept=-9 2.-3y=21x+7 y=-7x(7/3) slope=-7 y-intercept=-(7/3)
*July 13, 2014 by sharon*

**English**

I have to edit these. Add any words needed for grammatical or logical completeness 1. Very few black doctors were allowed to serve in the Civil War, and their qualifications had to be higher than white doctors. 2. Producers of violent video games are not capable or interested ...
*February 4, 2011 by Angel*

**mathematics / economics **

By December 2014, your organization had an establishment of 500 employees when it decided to expand its operations because of growth of market products demand. The decision was to increase the labor strength progressively by 5 percent per annual over the two year period while ...
*June 25, 2014 by Tasha Love*

**Algebra**

I have never had algebra and cannot figure out how to work through the problem below [(x + 1) - (2x + 1)]1/2 + 2|x| - 6 = 0 Can you show me the steps for solving the problem?
*April 13, 2011 by Coni*

**College Algebra**

need help in solving how many miles can i drive on 60 gallons of gas, with the Mpg 30 in the city, and 42 highway. I would like all the steps, never had algebra before, so i am very lost.
*February 27, 2011 by Dee*

**statistics**

11. (4 pts) The following statistics provide information about the scores on a national mathematics exam. Mean 312 First Quartile 201 Median 296 Third Quartile 423 Mode 326 49th Percentile 307 a) What score did half of the test takers surpass? b) What was the most common score...
*December 14, 2007 by Rose*

**statistics**

11. (4 pts) The following statistics provide information about the scores on a national mathematics exam. Mean 312 First Quartile 201 Median 296 Third Quartile 423 Mode 326 49th Percentile 307 a) What score did half of the test takers surpass? b) What was the most common score...
*December 15, 2007 by Rose*

**Mathematics - Dot Product**

Consider rhombus ABCD a) Find the resultants of vector AB + vector AD and vector AB - vector AD b) What will the value of (vector AB + vector AD) dot product (vector AB - vector AD) always be? Explain. c) Is the value of (vector AB + vector AD) dot product (vector AB - vector ...
*August 20, 2010 by Suhani*

**Algebra repost for James**

Algebra - James, Sunday, September 30, 2007 at 9:00am How do you work: 3-4q=10q+10
*September 30, 2007 by Ms. Sue*

**math**

Need help with algebra question If c= 5/9 (F-32)and F is 77 then what is c the 5/9 reprsents a fraction, I am no good in algebra and need help how to get the answer and the problem, thanks
*October 11, 2008 by chris*

**algebra**

Thank you for helping my with my Algebra.. write an equation for 5 more than a number g is 6 less thn twice a number h
*September 15, 2010 by michael*

**algebra**

2.) Use algebra to find the value of a in the triangle when x=a, y=2a, z=3a. Notice the measurement of the angle is not necessarily the as the value of a.
*May 7, 2012 by wanda*

**Algebra**

I am helping my granddaughter in algebra and need to know how to get the answer. What is a solution of x + 6x = 5? x = 6 x = 1 (I say this one) x = 1 * (she thinks it is this one) x = 6
*October 30, 2014 by Anonymous*

**algebra**

what is algebra? and you give me a example
*December 3, 2007 by aaron*

**algebra**

what does this mean in algebra? upsidedown v
*January 6, 2010 by M*

**Algebra 1**

Please help me on pg 50 from algebra with pizzazz 5,6,8
*September 18, 2012 by AndroAttaalla *

**algebra**

how do you solve this algebra problem 8(2x-3)-6x if x = 3
*September 12, 2013 by shantonia*

**Algebra**

How do I solve this algebra questions, 2n+4n+4=-8, 9=5+4t, at+2=12, 2x+3=7, 3b+6=12, m/6+5=7????
*December 5, 2013 by Raquel*

**Algebra**

I need help understanding algebra
*January 11, 2014 by Jackie*

**math**

Factorial notation problem. Please help? Hi, I am stuck on this maths problem. Solve for n: (n+2)!/(n)! =110. I get as far as (n+2)(n+1) = 110. When I multiply it out I get n^2,3n,2 = 110. There is only one example similar to this in my book and it used a quadratic equation to...
*July 3, 2013 by Maria*

**algebra 2**

Consider the exam data below. Algebra score: 20 35 13 29 40 23 Calculus score: 41 69 34 72 86 58 Use your calculator to find the regression line for this data, and graph it on your scatterplot. b. Interpret the slope and intercepts of this line in the context of the problem. c...
*July 5, 2013 by Rachel*

**Physics**

A ball is thrown upward from the ground with an initial speed of 25 m/s; at the same instant, a ball dropped from rest from a building 15 m high. After how long will the balls be at the same height? The equations I have is final velocity squared = initial velocity squared plus...
*September 24, 2006 by Becca*

**chem**

In an industrial process to make alcohol, bacteria, sugar, and water are fed into a bioreactor. The bacteria make alcohol, and water as well as leftover sugar. We desire to remove all the cells from the process stream so we may purify our alcohol product. The process stream ...
*October 21, 2012 by Krin*

**chem**

In an industrial process to make alcohol, bacteria, sugar, and water are fed into a bioreactor. The bacteria make alcohol, and water as well as leftover sugar. We desire to remove all the cells from the process stream so we may purify our alcohol product. The process stream ...
*October 21, 2012 by Krin*

**8th Grade Algebra: HELP ME PLEASE!**

I am having a hard time figuring out the equations for these problems. 1) The perimeter of a rectangle is 160 feet. One fourth the length is the same as twice the width. Find the demensions for the rectangle. 2) Lorena bought 10 packs of styrofoam cups for the graduation dance...
*March 4, 2009 by Joy*

***re-Calc**

I am trying to get the polynomial; x^7+2x^6+3x^5+4x^4+6x^3+6x^2+7x+8 divided by; x^5-2x^4-3x^3+5x^2+2x-3 into a partial fraction form so that I can create a system of equations to solve for. So far, after dividing I have (x+1)(x-1)^2, and (x^2-x-3) as factors along with an ...
*May 29, 2009 by John*

**someone correct my work please? fun, fun chemistry**

Okay. I'm very, very confused. The initial question is: predict the products of the electrolysis of a 1 mol/L solution sodium chloride. This is my work: The four different possible equations are: 2H2o + 2e- -------> H2 + 2OH- (V= -0.83) O2 + 4H+ + 4e- -------> 2H2O (V= 1...
*January 30, 2007 by Rienna*

**mathematics**

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of the points of the ...
*March 21, 2013 by Jossie*

**mathematics**

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of the points of the ...
*March 21, 2013 by Jossie*

**mathematics**

The circle x2-2x+y2-4y-4=0 lies on the cartesian plane,question 2.1.1 equation of new circle which is the rotation of original circle through 180 degree around the origin...2.1.2 find equation of another circle which is the translation (x;y)-(x-8;y-6) of the points of the ...
*March 21, 2013 by Jossie*

**math, correction**

can someone help me correct this Directions: Dtermine which two equations represent perpendicular lines. options are: A) y = 2x-4 b) y = (1)/(3) x + 4 c) y= - (1)/(2)x +4 d) y = (1)/(3)x - 4 wouldn't it be a and c . Because b and d have the dame slope which are parallel lines...
*February 12, 2007 by jasmine20*

**Math**

HELP Find the solution for x,y. In the problem... 5x-3y=-11 x-2y=2 Multiply the second equaton by five. 5x-3y=-11 5x-10y=10 subtract the second equation from the first. 7y=-21 solve for y, then put y into either of the beginning equations to solve for x.
*April 17, 2007 by Adam*

**Math**

The demand and supply equations for a certain item are given by D = -5p + 40 s = -p^2+30p-8 Find the equilibrium price. Wouldn't you set demand equal to supply, and solve for P? I will be happy to critique your work.
*June 10, 2007 by Audrey*

**Calculus**

I've been trying to figure this out but I can't seem to find the correct answer... DIRECTIONS: Find the points of intersection of the groups of the equations, and check your results analytically. QUESTION 1: 2x - 3y = 13 5x + 3y = 1 QUESTION 2: x^2 + y^2 = 5 x - y = 1 THANK YOU!
*September 10, 2007 by C*

**advanced math**

Hi, I am trying to solve graphing quadratic equations. One of the problems is written as -x^2= -2x-1. So if I wanted to put this equation in the proper quadratic equation form, would it be -2x-1-x^2, or -x^2+-2x-1? I'm really not sure.
*March 2, 2008 by Sharon*

**Math**

For each of the following, find the parametric equations of the line that passes through the point P with direction vector d. In each case, find two points on the line different from P. a) P(1,1) d=(4,-4) b) P(5,0) d=(1,3) answer at the back of the book is: a) x=1+t y=1-t ; (2...
*March 23, 2009 by Steffy*

**Math**

Could someone please help me with this. I am confused. Math is a weak point for me. Solve the system of equations by graphing. Then classify the system. 9x-6y=30, 6x-9y= -30. The solution is? Consistent or inconsistent, dependent or independent? How would I graph this? Thanks.
*April 11, 2010 by B.B.*

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