Friday

October 21, 2016
Number of results: 58,577

**Logic**

Claudia has four home works to do, go to the market, study for the exam, clean the room, and practice sports, she knows that: -she goes to the market if she studies for the exam. -she studies for his exam if she does not clean his room -if she does not practice his sport then ...

*January 3, 2014 by Jhon*

**Science**

I have a science exam tomorrow for 9 Space Science. I was wondering if you could help me find free practice exams, tests or questions to review for my exam. We have no way of knowing what your exam will cover. Your best bet is to review your own text, notes, and handouts.

*June 20, 2007 by Sarah*

**Integrated Algebra**

Where can I find review and exams and questions to practice for this exam? Thanks. Oh and also, where can I find the schedule for the exam dates of it?

*May 10, 2008 by Anonymous*

**NYS ELA Online Practice Exam - PLEASE read!**

Today is my NYS ELA Exam Book 1: Multiple Choice Questions. I know I'm supposed to be at school but the 7th graders take the exam around 12:30 or 12:40. Right now the 8th graders are (still) taking the exam so I'm still at home. Tomorrow is Book 2: Listening and Note-taking (...

*April 17, 2012 by Laruen *

**ap chemistry**

I have taken ap chemistry but I have language barrier and sometimes I don't get it and I am getting behind.We are already in chapter 9.I don't want to quit. What is the best way to improve and learn faster?Any practice I should do?What is the experience taking ap chemistry ...

*November 4, 2012 by zoya*

**chemistry**

4.72 moles of sulfur trioxide molecules contain how many oxygen atoms? i know the answer is 8.53 x 10^24 but i do know how my professor got it **this is one of my practice exam question!

*March 14, 2011 by jessica*

**French**

I need to find practice questions from the French Comprehensive exam and the French Proficiency exam.

*May 10, 2008 by Anonymous*

**accounting**

Can someone give me the site where I can do practice problems for Managerial Accounting. My instructor bases his exam on the CPA, the homework is easy. He said that he wants us to think outside the box. I need practice. All were word problems.

*July 29, 2010 by Carol*

**Biology quick please**

I need a practice biology test to practice for my final exam which is tomorrow. I'm a tenth grader and the things we learned were mitosis, meiosis, production of gametes, human reproduction, cell devision, mendelian genetics, probablitity of inheriting traits, dna, and what ...

*December 15, 2009 by Rachel*

**Math**

At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice drills last. How long, ...

*May 31, 2011 by Bella*

**Language Arts**

I need to practice writing summaries and small essay for my 9 week exam and I am not very good at writing summaries or essays. Can you please help me or provide me with a website that I am able to do practice summaries on. Please help.

*October 11, 2016 by Erik*

**Math**

At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice drills last. How long, ...

*June 1, 2011 by PLEASEEEE*

**Mathematics**

At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice drills last. How long, ...

*June 1, 2011 by HELP*

**math**

At football practice, players do a 20-minute warm-up before starting their practice drills. After the practice drills, they do a 10-minute cool-down. The expression 20+d+10 describes the length of practice, where d is the number of minutes the practice drills last. How long, ...

*June 1, 2011 by HELP ME PLSSSSSSSS*

**CTS practice tests**

I am scheduled to take my CTS test for music in a few weeks. I've been looking on-line for practice tests or old tests that I could take to prepare for the exam. Any clues where I might find some? Thanks

*October 20, 2010 by max*

**Chemistry**

On a practice exam, we have a question that says "How many enantiomers does kendomycin have?" It says the answer is 1, but I don't understand why?

*October 10, 2016 by Kyla*

**AP Exams?**

I am in AP Chemistry and AP U.S Hisotry and I have planned on taking the tests. So far I have made an A+ in APUSH, but I an B in AP Chem. I've done kinda bad on the tests I've taken in there and I don't think I will do good on the Ap exam. I think I have a better chance at ...

*March 31, 2015 by Anonymous*

**Chemistry AP**

This isn't quite an HW question, I'm needing any site that gives practice Free Response problems for equilibrium for AP Chemistry if there are any for study and practice.

*April 21, 2015 by Ethan*

**statistics**

Leslie took two midterm exams and earned the following scores: 82 on the chemistry exam (class distribution: μ = 75, σ = 6.25) and 63 on the physics exam (class distribution: μ = 59, σ = 3.57). Rounding to two decimal points, on which exam should Leslie get...

*April 14, 2014 by Sally*

**chemistry - exam practice help!!**

i'm not exactly sure how to do this question :/ i don't even know where to start. "Determine the equilibrium [F-] of the following solution with initial concentrations od [HF]= 1.296 M and [NaF] = 1,045 M (ka for HF is 6.6 * 10 ^ -4) options are a) 1.046 b) 0.251 c) 2.344 d) 8...

*December 12, 2012 by Anya *

**Chemistry**

practice exam...not sure how to do this A solution contains 10.0 mmol of H3PO4 and 5.0 mmol of NaH2PO4. How many millimeters of 0.10 M NaOH must be added to reach the second equivilence point of the titration of the H3PO4 with NaOH?

*November 20, 2011 by Minx64*

**College Algebra**

Hi there. My professor gave my class the practice problems for our final exam. I am a little stumped on a few of them and just need someone to help jog my memory. If you have the time, could you show the steps so I can see where I went wrong and practice it. Thank you in ...

*April 29, 2016 by Need Help*

**math**

A student’s final grade in chemistry is determined by the following weights: Quizzes 5% Exam 1 20% Exam 2 20% Lab Reports 15% Research Paper 15% Final Exam 25% The student received the following grades: Lab reports: 75 80 70 75 85 69 90 75 Quizzes: 85 60 70 0 75 80 80 80 Exam ...

*February 6, 2015 by Jayden*

**Chemistry**

On a practice exam, we have a question that says "How many enantiomers does kendomycin have?" It says the answer is 1, but I don't understand why? (You probably have to google a picture of kendomycin!!)

*October 10, 2016 by Kyla*

**statistics**

On this semesters final exam, john scored 72 on his calculus exam and 53 on his statistics exam. The z score for both exams was the same. Which on would he do better on? a. calculus b.statistics c. the exam scores are equivalent

*October 10, 2014 by mike*

**statistics**

On this semesters final exam, john scored 72 on his calculus exam and 53 on his statistics exam. The z score for both exams was the same. Which on would he do better on? a. calculus b.statistics c. the exam scores are equivalent

*October 11, 2014 by mike*

**Chemistry**

Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to study Chemistry I again?

*April 19, 2012 by Mima*

**Chemistry**

Our professor just told us that the final exam will be the ACS exam, we are taking general Chemistry II. What is the best way to study for ir? Is the preparing for ACS general chemistry study guide good? If we are taking general Chemistry II do we have to study Chemistry I again?

*April 19, 2012 by Mima*

**math**

13. A set of final exam scores in an organic chemistry course was found to be normally distributed, with a mean of 73 and a standard deviation of 8. What is the probability of getting a score higher that 71 on this exam?

*December 26, 2012 by Anonymous*

**statistics**

A set of final exam scores in an organic chemistry course was found to be normally distributed, with a mean of 73 and a standard deviation of 8. What is the probability of getting a score higher than 71 on this exam?

*September 24, 2013 by Selene*

**algebra **

What is the final grade for this student? (round to two decimal places) Quizzes = 5%, Exam 1 = 20%, Exam 2 = 20%, Lab Reports = 15%, Research Paper = 15%, Final Exam = 25% Lab Reports: 75,80,70,75,85,69,90,75 Quizzes: 85,60,70,0,75,80,80,80 Exam 1: 80 Exam 2: 70 Research Paper...

*September 22, 2015 by Kristen*

**Practice Exam Calculus**

f(x) = 6sqrt{x}- 9x n the interval [1,9]. f(c)=f(9)-f(1)/9-(1)=? Verify that the conclusion of the Mean Value Theorem holds by computing Now find,c in (1, 9) so that f'(c) equals the answer you just found. c=?

*October 22, 2013 by Sara*

**statistics**

On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \?=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, ?=2.04. Which exam should he get the better grade. z1=72-65/3.57=1.960 Z2=53-49/3.57=1.120

*October 8, 2014 by Sally*

**math gr 9**

hi can someone please post a website where I can do free grade 9 math exam practice.. i have already tried proprof but they are full...

*January 26, 2010 by Anonymous*

**statistics**

On this semester’s final exam, Susie scored 72 on her classics exam (class distribution: μ = 65, σ = 3.57) and 53 on her psychology exam (class distribution: μ = 49, σ = 2.04). For which exam should Susie expect the better grade? a. Classics b. Psychology c...

*October 7, 2014 by Sally*

**Statistics**

In Professor Smith's statistics course, the correlation between students' total scores before the final exam and their final exam scores is r = 0.67. The pre-exam totals for all students in the course have a mean of 275 and a standard deviation of 26. The final exam scores ...

*February 1, 2009 by Jannel*

**How to calculate marks to pass with the exam**

My friend has currently 62.4% and the final exam is worth 30%. She's wondering how much she should get on the exam to at least pass or boost it up. Please show the math :o

*January 23, 2011 by Anonymous*

**Statistics**

On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \σ=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, σ=2.04. Which exam should he get the better grade. z1=72-65/3.57=1.960 Z2=53-49/3.57=1.120

*October 7, 2014 by Sally*

**eced**

A correlatibas .82 was found betweenen number of hours studied and final exam scores. A.students who stuief less received a high exam scores. B.students who studied who studied received lower exam scores. C.studying caused studies to received higher exam scores. D.The amount ...

*September 4, 2015 by Anonymous*

**music**

how can i get better at piano without a teacher? It's the same answer as the New Yorker responded to this question: "How do I get to Carnegie Hall?" The answer: "Practice, practice, practice."

*September 15, 2006 by angela*

**statistics**

Correction On this semesters final exam, john scored 72 on his calculus exam, (class distribution (u=65, \?=3.57)\) ) and 53 on his statistics exam (class distribution :u=49, ?=2.04. Which exam should he get the better grade. z1=72-65/3.57=1.960 Z2=53-49/2.04=1.960

*October 8, 2014 by Sally*

**Math**

Makoto's lacrosse practice last 1 3/4 hours. This week he attended all of the practice on Monday and Wednesday, but he had to leave halfway through practice on Friday. How many hours did Makoto's spend at lacrosse practice this week? 1 3/4 + 1 3/4 +1 3/4. + 1 3/4= 5 1/4 - 1/2 ...

*April 7, 2015 by AC*

**chemistry placement exam**

has anyone taken a chemistry placement exam prior to their 1st year of college? what's it like? look up chemistry placement exam on yaahoo and there are a whole lot of websites that talk about what you are asking! hope this helps! You might browse these rays: http://www.google...

*June 21, 2006 by Hawk*

**Physics for exam**

I can't get this question and its been driving me crazy. I need to know how to do this for my exam. Any help would be appreciated. A golfer is practising his/her swing at a distance of 150m from a house. On the way back to the ground, 5.00 seconds after being hit, the ball ...

*June 19, 2006 by Natalie*

**English**

1. the baseball players lost the game because they were out of practice. (What is the opposite of 'out of practice'? Is it 'in practice'?)

*October 3, 2012 by rfvv*

**chemistry - exam practice help!!**

Given the table below predict the numerical value of the standard cell potential for the reaction: 2 Cr(s) + 3 Cu2+(aq) 2 Cr3+(aq) + 3 Cu(s) Half Reaction E (volts) (1) Cr3+ + 3 e- Cr E= -0.74 (2) Cr3+ + e- Cr2+ E=-0.41 (3) Cr2O72- + 14 H+ + 6 e- 2 Cr3+ + 7 H2O E= 1.33 (4) Cu...

*December 13, 2012 by Anya *

**ap english exam**

Does anyone know where I can find a free online copy of questions 28-43 on the 1996 AP English Language & Composition Exam? I found the exam but for some reason they skipped questions 28-43. I couldn't find it online, but it's possible that questions 28-43 were just trial ...

*November 15, 2006 by Anonymous*

**math**

I need help figuring the grade for two students I keep getting a big number. *Note Final can replace a low exam grade 𝐺𝑅𝐴𝐷𝐸 = .15 ∗ (𝐷𝑎𝑖𝑙𝑦 𝑎𝑣𝑔) + .65 ∗ (𝐸...

*August 29, 2016 by chris*

**Math (Algebra 1)**

Juan’s first 3 exam scores are 85, 93, and 87. What does he need to score on his next exam to average 90 for all 4 exams? let x represent the score on his next exam (put this in a multi-step equation) PLEASE HELP

*November 15, 2014 by Nicole*

**math**

In a course a student's final exam is weighted as heavily as his mid term exam.if a student receives a score of 84 on his final exam 90 on his midterm,what is the average for the course?

*June 10, 2016 by tish*

**stats **

Relatively speaking, which statistics exam did you do better on? On your first statistics exam you scored a 72 and on the second exam you scored an 89. Hey, you’re improving! Or are you? On the first exam, the class mean was 71 with a standard deviation of 15. On the second ...

*February 5, 2013 by kelly*

**Geometry B: Unit 3: Similarity Lesson5 Practice**

If you have done this please help me with just the practice question I have already done the quiz I just need help with the practice problems because they are in more detail.

*March 4, 2016 by Blair*

**statistics**

For a particular sample of 50 scores on a psychology exam, the following results were obtained. Mean = 78 Midrange = 72 Third quartile = 94 Mode = 84 Median = 80 Standard deviation = 11 Range = 52 First quartile=68 What score was earned by more students than any other score? ...

*January 24, 2008 by Jennifer*

**Exam**

Hello I have exams coming up and I was wondering if any of you guys know where I can get some practice exam papers or questions that I can do or download from the internet. I am in year 11, high school, and I have exam on geometry and trigonometry, intro calculus, English and ...

*May 13, 2007 by Jarin*

**Chemistry**

Arrange the compounds in order of increasing boiling point. A) CH4 B)CH3CH3 C) CH3CH2Cl D) CH3CH2OH **I know High Intermolecular force = High boiling point!** My question is if A, B & C are dipole-dipole, and D is hydrogen bonding.. how can i determine from A, B & C which is ...

*July 2, 2011 by Tc*

**statistics**

Answer the question(s) based on the following situation: 150 students in a math class take the final exam. The scores on the exam have an approximately normal distribution with center ì = 65 and standard deviation ó = 10.The third quartile of the scores on the exam is ...

*March 17, 2010 by Whitney*

**ACT's**

What is considered a good score to achieve on the ACT's? At what score on the 1-36 point scale is so low that you should consider retaking the ACT? I am just curious because I am taking it soon and stressing a little! Here is my advice: Because only the high score counts, take...

*February 5, 2007 by Aubrey*

**Legal Transcription**

Exam No. 465802 Exam Name LEGAL TRANSCRIPTION PROJECT Need to see someones done exam

*August 21, 2012 by T*

**penn foster world history**

see ive passed Foragers,farmers,and Builders (exam 007678) & The Axial Ages And Fitful Transitions (exam 007679) but i failed Contacts,conflicts,and The Crucible (exam 007680), Convergence,divergence,and Global Enlightenments (exam 007681), Frustrations Of Progress;chaosand ...

*October 6, 2011 by Adrianna*

**Final-Chemistry**

I have finals coming up in a week and a half. I know I should have started studying earlier, but I just had an exam in my chem class and was focused on getting the information for that exam mastered before I started studying for the final. Now, I'm overwhelmed. I have no idea ...

*November 30, 2009 by Katherine*

**algebra**

the final exam in a course will count as 30% of the total. prior to the final exam, 245 points are possible. how many points will the final exam be worth?

*October 9, 2010 by paul*

**Math**

An exam consists of six true-or-false questions. Assuming that every question is answered, in how many different ways can a student complete the exam? In how many ways may the exam be completed if a penalty is imposed for each incorrect answer, so that a student may leave some...

*September 14, 2014 by Anonymous*

**Algebra**

Nabuko practice the violin at lest 12 hours per week. She practice for three fourths an hour each session. If Nabuko has already practiced 3 hours in one week, how many sessions remain to meet or exceed her weekly practice goal?

*March 31, 2016 by May*

**human growth**

The esteemed Dr Bookworm has just completed a study in which he found a +1.0 correction between the number of cups of coffee his students drank right before class and the scores they earned on his final exam. This correlation means that: A. the less coffee the students drank, ...

*October 22, 2015 by Tonya*

**Probability (Pre-Calculus)**

A class is given a list of eight study problems from which five will be part of an upcoming exam. If a given student knows how to solve six of these problems, find the probability that the student will be able to answer: (a) all five questions on the exam. (b) exactly eight ...

*March 25, 2010 by Hailey*

**english ecpe degree**

Hello, This year I am sitting my ECPE exam of the university of Mishigan. Where can I find useful practice on the Internet? I would be grateful if you could help me.. Eva Ch. I don't know about practice, but here's a very interesting website: http://www.hau.gr/hau/en/en_7_1_2....

*February 10, 2007 by Eva*

**Statistics: IQ Score (X) and Exam Score (Y)**

Assuming that the regression equation for the relationship between IQ score and psychology exam score is Y' = 9+ 0.274X, what would you expect the psychology exam scores to be for the following individuals given their IQ exam scores? Individual Tim Tom Tina Tory IQ Score (X) ...

*October 18, 2011 by Joy Chapman*

**math**

Hi i have a math exam tomorrow and i wanted to get some extra practice so can you please find me free online math tests. Please do not give me "Proprofs" as one of the websites. I have already tried their website and it did not help :D

*January 27, 2010 by clueless*

**social studies**

The esteemed Dr. Bookworm has just completed a study in which he found a +1.0 correlation between the number of cups of coffee his students drank right before class and the scores they earned on his final exam. This correlation means that: A. the less coffee the students drank...

*September 27, 2012 by clara*

**A.P.World history**

I need help finding the answers. If u know anything about it, please feel free to help. Why do westerners have issues with veiling? Why do many muslim women voulentarily practice veiling? Does the practice of Hijab only apply to women? How do people who practice veiling view ...

*December 15, 2008 by kilhama*

**algebra**

Which situation would most likely be represented by a negative correlation: hours of practice and your golf score, hours of practice and the number of baskets you make in basketball, or hours of practice and the cost of a computer? Hint: In golf, the lower the score, the better.

*March 19, 2012 by Caitlin*

**flower design practical exam 2**

answers for penn foster exam # 030810RR

*May 17, 2015 by Moni*

**Math**

Professor Smith gives only a midterm exam and a final exam. The average is computed by taking 1/3 of the midterm exam score and 2/3 of the final exam score. To get a “C” or better students must have at least 70 semester average. If Laura scored only a 59 on the midterm, what ...

*June 3, 2013 by Zay*

**exam number 06041600**

do you have the answers for this exam in steps to the math problems? i need help on them.

*December 5, 2012 by lindaemory*

**Statistic**

A training center claims that 75% of people taking national exam on achievement. In a sample of 90 people who took the exam only 39 have passed the exam. Use hypothesis testing to determine whether the training center claim is justified. Use 5% level of Significance

*July 9, 2012 by Mark*

**early childhood currirulum**

Penn foster Test exam questions exam number 405550

*September 4, 2013 by Andria*

**poetry**

1)exam #00779100 of penn foster i need help with the exam

*April 16, 2009 by Anonymous*

**early childhood ed**

Test exam questions..exam 405550

*September 4, 2013 by Andria*

**math**

In a class of 36 students 75% pass the exam. How many failed the exam

*August 29, 2016 by hammed *

**Math**

There are 100 fish species that I have to be able to identify in a lab exam. I only had enough time to recognize 50 species. On the exam, they will randomly select 25 of the 100 species for testing. What's the probability or chance that I would be able to score 50% in that ...

*December 10, 2007 by Fiscars*

**Statistics-Concept Question**

I have a stats exam tomorrow and I understand the material pretty well, but i sort of get confused. because my homework comes from a section, i know what formulas to use, but i took a practice test and i'm having a hard time identifying whether a problem is poisson or binomial...

*June 8, 2009 by Katie*

**trigonometry**

tan60=2 tan30/1-tan^2 30 sqrt(3)=I'm confused of that 2 but i guess it means to multiply. again.. sqrt(3)= (2) sqrt(3)/3 / 1- sqrt(3)/2 ^2 now i don't know how to square tan . if u can show me in details i would appreciate it. this is just a practice problem and i want to ...

*December 30, 2010 by anon*

**math**

you are given an exam with only 9 questions. if each question has 4 choices, how many different possible answers can you have for the entire exam?

*January 18, 2009 by Kennedy*

**Reimbursement Methodologies**

Jessica, I am aslo doing my exam but I am really having problems with number 4 in part B exam # 40976200 was wondering if you can help. Thanks

*November 26, 2010 by Alex*

**busines ethics and starting a small business**

I need exam answers to 25 questions that are on the the above college subject exam.

*October 4, 2012 by Edward*

**Statistic**

The professors at Wilfred Laurier University are required to submit their final exams to the registrar’s office 10 days before the end of the semester. The exam coordinator sampled 20 professors and recorded the number of days before the final exam that each submitted his or ...

*January 31, 2011 by naquila*

**statistic of behavioral science**

for each of the following, identify the exam score that should lead to the better grade. In each case, explain your answer. A score of x=56, on an exam with the mean =50 and the standard deviation of 4; or a score of x=60 on an exam with the mean=50 and the standard deviation =20

*June 22, 2013 by Janice*

**language arts**

Cleanliness what is it? why practice it? how do you practice it? what would it look like if..... reflections: action plan: plz help!!!!!!!!!!!!!

*December 4, 2011 by smiley face*

**Math**

Exam scores were normal in MIS 200. Jason's exam score was 1.41 standard deviations above the mean. what percentile is he in?

*March 25, 2009 by Nathan*

**Math**

Jeremy uses the linear function G=12h+50 to represent the grade, G (in points out of 100), that he can earn on an exam as a function of h, the number of hours he spends studying for the exam. 1.) Identify the slope and y-intercept of Jeremy's function and explain what they ...

*April 9, 2015 by Hailey*

**physics **

Spaceship I, which contains students taking a physics exam, approaches Earth with a speed of 0.640 c, while spaceship II, which contains instructors proctoring the exam, moves away from Earth at 0.280 c, as in Figure P26.27. If the instructors in spaceship II stop the exam ...

*April 16, 2010 by Andy *

**physics**

Spaceship I, which contains students taking a physics exam, approaches Earth with a speed of 0.640 c, while spaceship II, which contains instructors proctoring the exam, moves away from Earth at 0.280 c, as in Figure P26.27. If the instructors in spaceship II stop the exam ...

*April 16, 2010 by Andy *

**Chemistry**

My final exam is coming up so I am doing study guides to help me practice. I would really appreciate any help that is given. 1. The hydronium ion concentration for a solution is determined to be 4.5 x 10^-7 M. What is the concentration of the hydroxide ion? 2. When a 5.00 mL ...

*November 25, 2012 by Studying*

**English**

1. If anyone doesn't find me, I will die. 2. If no one finds me, I will die. (Are both grammatical?) 3. You have to practice playing the piano. 4. You have to practice to play the piano. 5. You have to practice the piano. (Which ones are correct from #3 to #5?)

*September 4, 2009 by John*

**Health Care**

Describe at least two advantages to having a solo practice. Describe at least two benefits of having a group practice. Are there any disadvantages to having a group practice? What are the disadvantages to having a solo practice? My first time, no clues. Please help!!

*May 3, 2008 by Vikky*

**Statistics**

In Professor White’s statistics course the correlation between the students’ total scores before the final examination and their final examination scores is r = 0.9. The pre-exam totals for all students in the course have mean 275 and standard deviation 50. The final exam ...

*October 21, 2012 by Kevin*

**VNS,Math**

Mr. Bobby bought 50 shares at $60, and 2 months later purchased 25 shares a $56.at what price should he purchase 25 additional shares in order to have an average price $58 per share? The average age of a family of 6 members is 25 years. The average of the family after a 45 ...

*October 4, 2013 by Nahar*

**Statisitics**

In a large section of a Chemistry class, the points for the final exam are normally distributed, with a mean of 72, and a variance of 81. Grades are to be assigned according to the following rule: the top 10% receive As, the next 20% receive Bs, the middle 40% receive Cs, the ...

*March 28, 2013 by Hulio*

**math**

Phil needs to practice free throws 7/10 of an hr each day. If he has already practiced 3/10 of an hr today, how much longer does he need to practice?

*November 24, 2009 by veronica*

**chemistry - exam practice help!!**

For the cell shown below, which will increase the cell voltage the most? Fe2+ | Fe3+ || Cu2+ | Cu A) Halve[Cu2+] B) Double[Cu2+] C) Double[Fe2+] D) Halve[Fe2+] E) Cut Cu electrode in half ... Ecell = E0 cell + 0.059/n * log([Cu+]/[Fe2+]) Ecell is directly proportional [Cu+] to...

*December 13, 2012 by Anya *