Thursday

August 21, 2014

August 21, 2014

Number of results: 38,611

**Calculus (final question I promise)**

1. Use calculus and algebraic methods to do a complete analysis (i.e., intercepts, critical points, intervals of increase and decrease, points of inflection, intervals of concavity, local maximum or minimum points) for each of the following functions and then sketch the graph ...
*July 28, 2008 by Derek*

**Calculus**

Find the area between the curve y=4/x and the x-axis from x=1 to x=e. It is a review question for my final exam and I am really stuck on how to solve You should hope for a final exam question so easy. area= INT y dx= INT 4/x dx from 1 to e area= 4ln x from 1 to e
*April 29, 2007 by Evan*

**Eurpoean History **

How did imperial forces entice resistant countries into submission? What role did the promise of democracy play? In your opinion, was this promise kept? Why or why not?
*October 21, 2010 by Smith *

**Math last question i promise **

I have another problem: Solve this equation: $19.95 + $.99m + $65.32 = $144.67 I swear this is the last question! I'm sorry I am asking so much, I just need a little help.
*September 27, 2013 by Charlotte*

**Sonnet 130(last question I promise)**

Who is the audience?
*March 1, 2009 by Stacy L.*

**BIO**

I really need help with this question, Damon gave me an answer, but I do not know if it is for this question or for the one posted after. This is the only question I need help on, I promise not to post any other questions after this I need help
*July 7, 2010 by Andrea*

**Global History**

Last question i promise. Describe Hitler's blitzkrieg tactics.
*March 17, 2010 by Alex*

**calculus**

I am having alot of trouble remembering how to do this and this is a practice question for my final if you could help that would be great. Solve the differential equation (dy/dx)=(3x)/(1-x^2)
*May 10, 2009 by Annie*

**College Math**

This is my last question, I promise! Use U={1,2,3,4,5,6,7,8,9,10} A={2,3,5} B={5,6,7,9} C={1,4,10} to find the set AUB You guys are awesome!!
*March 18, 2014 by Cassandra*

**Last Question Romeo and Juliet Quotes Help**

This is the last question I promise I'm sorry I'm being such a bother but I need help with this quote. "I have forgot that name and that name's woe." Does this quote mean that it tries to forget that name, and all about her. (Rosaline he's referring to)
*March 31, 2009 by Jamie:)*

**life skills**

how do you make a good mission stement essay? Generally, a good mission statement will follow the outline below: 1. Who are you? 2. What do you do? 3. Why do you do it? 4. What is your promise? 5. Why is that your promise? 6. How will you fulfill your promises and expectations...
*September 30, 2006 by Ana*

**Calculus**

Need an answer to this Calculus Question. I keep getting this type of question wrong. Thanks. Differentiate the Function: y = (3x-1)^2(2-x^4)^2 y =
*April 19, 2010 by Dave *

**calculus**

final question Consider the function F(x)=3x^4-5x+3 / X^4+1 Find: Domain Vertical,horizontal,or slant asymptotes x-intercept(s) y-itercept(s) symmetry(respect to x, y-axis or orgin) F (x) Critical numbers F (x) Possible points of inflection
*December 5, 2009 by marlyn*

**Last Math problem I promise **

a cellular phone company offers a contract for which the cost C, in dollars of t minutes of telephoning is given c=0.25(t-300)+65.95 where it is assumed that t >== 300 minutes what times will keep costs between 106.20 and 139.20? I am already lost at word problems... please...
*November 5, 2009 by Anna*

**Math**

I have a question.. I have a 90.7% in math right now and I need to bring it up to a 93%. The only thing left is the final exam, which is worth 10% of your grade. Does anyone know a formula or a method that will allow me to calculate what I need on the final exam to bump me up ...
*June 18, 2007 by John*

**business law**

Which of following is true about the capital contributions of members to an LLC? a) Capital contributions must be made in the form of Cash. b)An unfulfilled promise to make a capital contribution is generally unenforceable. c)Members are required to make equal contributions in...
*April 12, 2007 by singh*

**business law**

Which of following is true about the capital contributions of members to an LLC? a) Capital contributions must be made in the form of Cash. b)An unfulfilled promise to make a capital contribution is generally unenforceable. c)Members are required to make equal contributions in...
*April 12, 2007 by singh*

**English**

I really need help with my english homework which has to do with infinitve phrases that are noun, adj, or adv. My question is: Prospective team members must promise to attend regular practice sessions.
*February 22, 2010 by Haiku*

**Question (help)**

when someone makes a goal is it called revolution????? like promise to do something like getting better grades and make it as a goal.
*July 5, 2012 by Laruen *

**History**

How does war build national pride? Besides if there is a victory that occurs from war. This is the last question for the night I promise. I need a few ideas please. Your help is greatly appreciated and it means so much to me. THANK YOU FOR EVERYTHING!!
*April 5, 2009 by Kara*

**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*

**Calculus**

I need help with these two review calculus problems for my final exam. What is the derivative of a). (5x^2+9x-7)^5 b). Lne^x^3 For a. I got 50x+45(5x^5+9x-7)^4 For b. I got 3x^2 Can you verify please?
*May 21, 2012 by Sam*

**public administration**

LAST QUESTION I PROMISE> I AM STUCK PLEASE HELP In the area of public administration, which of the following is considered to be a reformer? A. Franklin D Roosevelt B. Dwight D Eisenhower C. Gerald R Ford D. Calvin Coolidge
*January 13, 2008 by Keith*

**working with data**

josephs final averages in science class are shown in the table below. homework % toward final grade-20% average-93 quizzes % toward final grade-20% average-92 tests % toward final grade-40% average-85 final exam % toward final grade-20% average-? what is the minimum score ...
*February 24, 2008 by mike*

**math**

Sheryl correctly answered 85% of the questions on her 200-question biology final. Fernando scored a 90% on his 180-question chemistry final. (a) Who answered more questions correctly? ____________________ (b) Who answered more questions incorrectly? ___________________
*March 26, 2010 by Kirk*

**math**

The Brains answered a 50 point question correctly, a 150-point question incorrectly, and a 200-point question incorrectly. What is their final score? Total score possible = 50+150+200 = ?? As a percent, the final score is [50/??]*100 = xx percent.
*May 3, 2007 by hALIDA*

**math**

Sheryl correctly answered 85% of the questions on her 200-question biology final. Fernando scored a 90% on his 180-question chemistry final. (a) Who answered more questions correctly? (b) Who answered more questions incorrectly?
*December 8, 2009 by student*

**Calculus - Taylor #2**

Find the Taylor series for f(x) centered at the given value of 'a'. (Assume that 'f' has a power series expansion. Do not show that Rn(x)-->0.) f(x) = x3, a = -1 and what i've done so far: f (x) = x^3 f ' (x) = 3x^2 f '' (x) = 6x^1 f ''' (x) = 6x f (-1) = -1 f ' (-1) = 3 f...
*July 28, 2007 by COFFEE*

**Question ! :)**

Why is it important to use caution before putting any personal information on a computer? (example(s) required) I think everyone knows the general idea to the answer to this question but this is my final exam question...so it has to be thorough. Any specific ideas for an ...
*May 19, 2009 by Kate*

**College Algebra**

Matt scored 75 on the calculus midterm. If the final exam counts twice as much as the midterm exam, then for wht range of scores on the final would Matt get an average between 81 and 92?
*September 25, 2011 by Ty*

**Symbolism (final)**

Can you find the symbol in this line from Emerson's "The Concord Hymn"? What does it represent? Their flag to Aprils's breeze unfurled... Okay, this makes no sense to me whatsoever. Can't seem to figure it out. Final question on symbolism. Any help is appreciated. Thank you ...
*January 14, 2009 by Larry*

**Physics/Math**

In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.6 kg book is pushed from rest through a distance of 0.90 m by the horizontal 22 N force from the broom and then has a speed of 1.60 m/s...
*February 10, 2007 by COFFEE*

**Physics please check**

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
*April 15, 2007 by Mary*

**calculus**

this question is a multiple choice question, however i dont know how to start or finish it. The solution set of |3x+2|<1 contains... i need help trying to figure out how to solve for x. other then that i believe i could answer the question.
*February 25, 2010 by Selly*

**Physics please check repost**

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
*April 15, 2007 by Mary*

**Calculus, bobpursley! **

This has to do with my last Calculus problem. I need help on it..The part I replied to after you answered the question.
*September 21, 2010 by Leanna*

**CHEMISTRY**

If a Li 2+ ion, initially in the 2nd excited state absorbs a photon of light with a fequency of 2.82 X 10^6 GHz, what will be the final energy level for this electron? Show all stepts to get final energy level. i have no clue what this question is even asking :[?
*November 7, 2007 by Kate*

**AP CHEMISTRY**

If a Li 2+ ion, initially in the 2nd excited state absorbs a photon of light with a fequency of 2.82 X 10^6 GHz, what will be the final energy level for this electron? Show all stepts to get final energy level. i have no clue what this question is even asking :[?
*November 7, 2007 by Kate*

**Chemistry**

I think I have the answer to this question but need some help! Display the final answer in correct scientific notation and show correct number of significant figures in the final answer: 6.0223010000 x 10-24 x 2.222090001 x 10-30
*February 22, 2012 by Susan*

**Calculus Precalculus**

Answer the calculus question about Point P, 45 mph, etc. It is ALREADY posted on here.
*August 27, 2011 by Zach*

**Calculus HS**

Final ? - Let f(x) = x2-x-6/x g(x) = x-3, find (f+g)(x) (f-g)(x) (f/g)(x) Thanks again
*September 30, 2008 by kelly*

**calculus**

I am studying for a final exam and in our review packet we have this question, which I am having trouble with: lim (x-->0) ((e^x)+x)^(1/x) I tried this problem two ways. The first was with L'Hopitals rule... lim(x-->0) (1/x)((e^x)+x)^(1/x-1) * (e^x+1) but that doesn't ...
*May 20, 2009 by Jenna*

**chemistry help**

our teacher said on our final chemistry lab test there will be a question asking us to convert nanometers to wave numbers, anyone know what the question might be phrased like? also, im not sure i know how to convert, anyone have an example question with the steps?
*November 26, 2010 by jes*

**English**

1. All flights have been cancelled because of bad weather. 2. All flights have been cancelled because of bad weather. 3. He cancelled the promise. 4. He canceled the promise. (Which one is correct? Which one is the correct form of the past tense of 'cancel'? Are both OK?)
*December 28, 2011 by rfvv*

**Algebra**

Before the final exam, a student has test scores of 72, 80, 65, 78, and 60. If the final exam counts as one-third of the final grade, what score must the student recieve in order to have a final average of 76 percent? Thanks!!
*September 14, 2013 by Serena*

**algebra,math**

can someone correct these. and help me DIrections:Factor (3) 4x^2-4x-15 My solving: 4*x*x-4*x-15 (the star means multiply my final answer: x^3-15 (the ^ means for exponent) (4) 5x^2-26x+5 my solving: 5*x*x-26*x+5 my final answer: x^3-16 I don't understand what you did. The ...
*December 12, 2006 by jasmine20*

**Physics - Mechanics and Ocsillatory Motion**

Suppose that each of the three masses in the figure below has a mass of 5.05 kg, a radius of 0.0679 m, and are separated by a distance of 9.9 m. If the balls are released from rest, what speed will they have when they collide at the center of the triangle? Ignore gravitational...
*December 9, 2010 by Sara*

**Poetry**

I need to write a one page response to the following poem, answering "How persuasive is this poem? How powerful is its argument? Account for its effect." I don't know where to begin because I don't understand the question. Any suggestions? Promises Like Pie-Crust Christian ...
*October 4, 2008 by Matt*

**Physics**

Regading my question yesterday about the ball being caught by the man on the scales (Sun. 3:47), I'm now wondering if, to get the final weight on the scales I need to add the actual ball's mass of .50 kg AS WELL AS the force of the ball on the man to his original weight in ...
*March 23, 2009 by Brigid*

**Poetry (9th grade)**

This is a poem by Alice Walker and a question at the end but I can't figure out the question. Poem title: "Good Night, Willie Lee, I'll see you in the morning." Looking down into my father's dead face for the last time my mother said without tears, without smiles without ...
*January 22, 2009 by Josh*

**physics**

For some reason i cant get this question. If someone can help that would be great. Thanks. In a pickup game of dorm shuffleboard, students crazed by final exams use a broom to propel a calculus book along the dorm hallway. If the 3.5 kg book is pushed from rest through a ...
*September 27, 2009 by manny*

**Calculus**

lim 1/(1+h)^2-1/h h->0 I have 1 as my final answer and was wondering if i was correct
*January 28, 2013 by Jack*

**PHYSICS**

Question Part Points Submissions Used A baseball pitcher pivots his extended arm about his shoulder joint, applying a constant torque of 170 N m for 0.15 s to his arm, which has a moment of inertia of 0.53 kg m2. (a) Find his arm's angular acceleration and final angular ...
*March 14, 2012 by cindy*

**Chemistry**

If 125mL of a 1.10 NaCl solution is mixed with 105mL of a 0.850M CaCl2 solution but NO reaction takes place, calculate the final concentration of each of the ions in the final solution. Please reply with the steps on how to do this question so I can learn. I can't find ...
*June 14, 2012 by bri*

**essay topic**

i have to write about a time that i've broken a promise or a time that somebody has broken a promise to me. can anybody help me think of something? it can be made up. i can think of a few things but nothing that i would be able to write a whole essay over. Don't make it up. ...
*November 17, 2006 by Anonymous*

**english**

what does juliet ask romeo to do and what does she promise to do
*March 23, 2011 by rachel*

**Science**

How do I make 5 ml of a final concentration of 20 ug/ml of reagent A in 10% reagent B/ 1X reagent C? Note: The stock of reagent A is at 1 mg/ml. Reagent C is purchased as 1X. Use the stock of undiluted Reagent B. How do I go about doing this and what will be my final answer/s...
*December 9, 2006 by Chris*

**Chemistry**

If your solutions final volume of 32.55 mL yields 3.6 grams of AgCl, determine the Molarity of the final solution. Also, how many milliliters of a 1.85 M solution of AgNO3 did you add to an excess of aqueous NaCl to provide the 3.6 grams of AgCl? Actually this question is two...
*March 26, 2013 by Shoba*

**Math - Calculus**

Integration of (sinx + cosx)^2 from 0 to pi/2. I get pi/2 + 1 as my final answer... wondering if that's correct?
*January 19, 2011 by Jen*

**Calculus**

I need help solving for this final problem to complete my assigment. Please help! Solve for x: ln(x^4)-ln(x^2)=2
*September 24, 2012 by arcos15*

**history**

What happened to a knight when they broke a promise?
*November 29, 2007 by Johnathon*

**history**

What happened to a knight when they broke a promise?
*November 29, 2007 by Johnathon*

**calculus**

Use vectors to find interior angles of the two triangles with given vertices - round to nearest hundredths Question 1: (-3, -4),(1,7),(8,2) Question 2: (-3,5), (-1,9), (7,9)
*May 25, 2012 by AEF*

**math**

a^3+b^3=c^3...find a,b&c anyone who can help me before 6pm i promise R200
*February 18, 2011 by nimrod*

**american history**

who won the election of 1920 and what was his promise to the nation?
*October 17, 2011 by jenny*

**Physics please check**

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
*April 15, 2007 by Mary*

**math**

last one on this topic i promise ;-) 4X-14+2X^3-7x^2 rearrange by degree 2X^3-7X^2+4X-14 and them im stuck..
*October 27, 2010 by lomas*

**PHysics...last one :)**

hello sorry once again...this will be my last question...i promise...but here is the question.... A red car and a green car, identical except for the color, move toward each other in adjacent lanes and parallel to an x axis. At time t = 0, the red car is at xr = 0 and the ...
*January 27, 2008 by Mary*

**Physics repost please check**

Three moles of an ideal monatomic gas are at a temperature of 345 K. Then, 2531 J of heat are added to the gas, and 1101 J of work are done on it. What is the final temperature of the gas? delta U= 3/2nR(T final -T initial) (2531J - 1101J) = 3/2(3.0mol)(8.31)(T final - 345K) ...
*April 16, 2007 by Mary*

**math**

An instructor counts homework as 1/3 of the student's grade and the final exam to be 2/3 of the student's final grade. Going into the final exam a student has a homework grade of 48%. What range of scores on the final exam would put the student's final average between 70% and...
*September 30, 2007 by Jessica*

**Calculus**

Solve the differential equation. t(dy/dt) + 2y= t^3 t>0, y(1)=0 I think I solved it properly, I'm just trying to check my final solution.
*February 15, 2011 by Rachel*

**Pre-Calculus**

Simplifying Complex Fractions [(x+3)/12] / [(4x-5)/15] [(x+3)/12] x [15/(4x-5)] (x+3)5/4(3x-5) (5x+15/12x-20)<-- final answer Did I do this right. If not could you please explain how to do it correctly
*February 27, 2013 by Caroline*

**Physics**

I'm stuck on this problem. "You mix 100 ml 60 degree C water with 100ml 20 degree C water. Find the final temperature" Changing 100 ml to .1kg, I set .1*4186*(60-final temp.) + .1*4186*(final temp-20)=0 but my t's cancel out. I know it would work if I set my first half of ...
*April 28, 2009 by Brigid*

**Math**

Going into the final exam which will count as two-thirds of the final grade, Mike has test scores of 86,80,84,and 90. What score does he need on the final to earn an average score of 80? Is this right: (86+80+84+90)/4 = 80 2/3x(85)= 80 or ((86+80+84+90+(2/3x))/5 = 80
*September 17, 2010 by Amy~*

**last calc question, i promise!**

given the curve x + xy + 2y^2 = 6... a. find an expression for the slope of the curve. i got (-1-y)/(x + 4y) as my answer. b. write an equation for the line tangent to the curve at the point (2,1). i got y = (-1/3)x + (5/3). but i didn't any answer for c! c. find the ...
*February 20, 2009 by jane*

**Computer**

Why is it important to use caution before putting any personal information on a computer? (example(s) required) I think everyone knows the general idea to the answer to this question but this is my final exam question...so it has to be thorough. Any specific ideas for an ...
*May 19, 2009 by Helen*

**Calculus**

f(x)=(y+a) and b=the limit as y aproches 2+f is 1000 figure out a,y, and f I'm lost, but I need to know for our trimester final. I don't even know if it's possible.
*November 27, 2007 by Roseliandystarajestarahjaesracritreah*

**calculus**

Question 1 The figure below shows the rate of change of the quantity of water in a water tower, in liters per day, during the month of April. If the tower had liters of water in it on April 1, estimate the quantity of water in the tower on April . Round your answer to the ...
*November 10, 2011 by megan*

**Physics**

Hi, here's a problem that I have difficulty with to solve. Block M2, w/c has a 20 kg mass, is on a frictionless table and it is firmly attached to one end of a spring with k = 2.5 N/m. The other end of the spring is anchored to the wall. Another block, M1 (and of the same mass...
*November 2, 2011 by Chika*

**Language Arts**

Need some help on the question below. "California was settled sooner than many Western states. The promise of gold first drew miners and settlers. Good climate and fertile land held them there (more successfully, most successfully) though." I know you use more when comparing 2...
*March 21, 2012 by Brandi*

**TRIGONOMETRY**

Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 4. Transform each polar ...
*May 16, 2013 by Kate*

**Chemistry**

Complete this table of initial and final concentrations HF(aq) + KOH(aq) <-> KF(aq) + H20(l) Initial concentrations: HF-2.0M KOH-1.0M KF-0M Final Concentrations? how do I set this up to figure out the final concentrations? How can I tell which of the following best ...
*July 16, 2013 by Cat*

**Business Law**

Talen promises to give omar a birthday present. Is this promise a contract?
*December 1, 2008 by Thomas Leo*

**Physics**

An ideal gas is contained within closed box behind a removable wall. The walls of the container are insulated, so that no heat may be transferred from the system. Initially, the gas has an initial pressure P and an initial temperature T. The gas is then allowed to freely ...
*July 20, 2014 by Sam*

**Business and math question**

Isabella is hoping to get an A on her college algebra course. With just the final exam left to take, she currently has an average of 92 on her exercises. The quizzes count for 40%, exercises count for30% of the class grade. What is the minimal grade that Isabella must have on ...
*August 30, 2012 by John*

**TRIGONOMETRY**

Can you please help me with this question on my study guide for my trig final? Thanks! I'd also appreciate if you can check out my other postings and check my work for some other study guide questions. I want to make sure I'm ready for my final. :) 3. The rectangular ...
*May 16, 2013 by Kate*

**physics**

15g iron (c=450 J/kg K) bolt is heated from 21 C to 312 C. It is then plunged into a 2kg of 15 C water (c= 4180 J/kg K) into a 4.6kg alum. tub (c=903 J/kg K) What is the final temp. (Tf) of the water and the tub? for some reason..., i got 0.472 C for final temp of tub and -14....
*June 10, 2008 by jake*

**IPC Science**

Um.... My question is simple...What should you study the day b4 a Final?
*December 16, 2008 by Crystal Torres*

**Pre-Calculus**

Exponential Functions A=P(X)^t/n A-final amount P-initial amount X-growth rate t-time n-number of growth periods The teacher had this question as an example and did it however i do not understand one thing: The Ebola virus double every 30 min. If there are currently 2000 ebola...
*October 16, 2012 by Shreya*

**Calculus Verification**

I just want to make sure im right. Find the derivative if y= arcsec(x+3). I got 1 ======================= |x+3|sqrt(x+3)^(2)-1 Is this the final answer or do you need to solve (x+3)^2 and get (x^(2) + 9x + 9)
*October 7, 2007 by Matt*

**Chemistry**

a solution is prepared using .015 L of 1.0 M HCl and .020 L of .50 M HNO3. the final volume of the solution is 1.25 L. Answer th following questions. a)what are the [H3O+] and [OH-] in the final solution? b)What is the pH of the final solution?
*May 4, 2010 by Alexa*

**uhd**

int carry=0; int prod,i,j,rem; int base=10; else if ( op == '*' ) //checks for operator, performs array multiplication { for(i=size-1; i>-1;i--) { for(int j=size-1; j>-1;j--) { prod =firNum[i]*secNum[j]; prod += carry; if(prod>=base) { carry = (prod/base); prod -= (...
*February 16, 2012 by sardar*

**calculus **

find the positive roots of the equation 2x^3-5x^2+6=0 and evaluate the function y=500x^6 at each root. round you answers to the nearest integer, but only in the final step.
*November 22, 2010 by maritza*

**Calculus**

Use the Evaluation Theorem to find the exact value of the integral ^6 2 2x+1dx 1) What is the antiderivative? 2)What is theupper and lower limit? 3) Give final answer.
*April 12, 2013 by Sasha*

**Calculus**

How do you find the derivative of (x-2)^.5 times (2x+1) times (x-3)^-.666666667? What is the final answer as well?
*November 8, 2007 by anonymous*

**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*

**Calculus**

Suppose that f(2)=3 and f′(2)=5. Let g(x)=x^3f(x). Evaluate g′(2). Your final answer should be a single number.
*October 2, 2011 by Allison*

**Did I do this right?-Calculus**

y' and y'' for x^2- xy + y^2 = 3 y'= (y-2x)/(2y-x) y'' = [(y'-2)(2y-x)] - [(2yy' - x)(y- 2x)]/ ((2x-y)^2) final answer for second derivative is: [2y^2- 5xy + 2x^2 - 2y^3 + 8xy^2 - 8x^2y/ ((2x-y)^3)] - [(4y + 2x + xy - 2x^2)/((2y-x)^2)] is this right. thank you
*March 30, 2013 by Iliana*

**chemistry**

A solution of 0.178 M KOH(28.3 ml) is mixed with 28.9ml of 0.133 M HCl. Assuming that the final solution is the sum of the initial volumes, caculate: a)the molarity of the K+ cation b)the molatiry of the Cl- anion c)the pH of the final solution d)the pOH of the final solution
*February 8, 2012 by helen*

**statistics**

In a large class, there were 220 students who wrote both the midterm and the final exam. The standard deviation of the midterm grades was 14, and that of the final exam was 20. The correlation between the grades on the midterm and the final was 0.60. Based on the least squares...
*September 22, 2012 by ashik*

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