Friday

December 19, 2014

December 19, 2014

Post a New Question | Current Questions

**Math**

Q. As a project,the fifth grade students at Scott Elementary School collected newspaper to recycle. During the first week, they collected 212 pounds of newspapers. For each of the next four weeks,they doubled the previous week's amount of the newspaper collected. What was ...
*Friday, December 5, 2014 at 9:22pm*

**5th grade math**

Q. John Brown elementary school Art Club was recycling paper towel tubes for their holiday crafts project. The school enrollment was 629 students. If the art club asked every student to bring 6 empty paper towel tubes to make the project. How many paper tubes will they need? A...
*Thursday, December 4, 2014 at 7:10pm*

**Math**

Q.Bettler Elementary School was recycling thier copier paper after the students had completed worksheets. they found that when they filled the barrel with paper it weighed an avearge of 463 pounds. if they collected 16 barrels of paper during the year. what was the approximate...
*Thursday, December 4, 2014 at 6:58pm*

**Elementary Alegebra**

jon's age is 120% of Sara's age. If their age difference is 5 years, how old are jon and sara?
*Tuesday, December 2, 2014 at 7:11pm*

**math**

Q. As a project,the fifth grade students at Scott Elementary School collected newspapers to recycle. During the first week,they collected 212 pounds of newspapers. For each of the next four weeks,they doubled the previous week's amount of newspaper collected. What 6th was ...
*Monday, December 1, 2014 at 7:18pm*

**Foundation of a Healthy Lifestyle**

One reason early childhood education centers have become increasingly important providers of health education is that A. younger, healthier teachers and classroom aides have emerged. B. schools are more sanitary than 70 percent of home environments. C. working parents are ...
*Thursday, November 20, 2014 at 9:11pm*

**Math Elementary Linear Algebra**

determine whether or not the given set forms a basis for the indicated subspace: #1 {1,1,0), (1,1,1)} for the subspace of R^3 of all (x,y,z) such that y= x+z #2 {[1,2,-1,3), (0,0,0,0)} for the subspace of R^4 of all vectors of the form (a,b, a-b,a+b) and #3 {(2,0,2), (1,1,1)} ...
*Sunday, November 16, 2014 at 6:17pm*

**Elementary Math**

Miriam is four years older than Ricardo. Ten years ago Miriam was 3 times as old as Ricardo was then. How old are they now?
*Sunday, November 16, 2014 at 4:41pm*

**Biochem**

Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th Grade 7th Grade 8th Grade High School 9th Grade 10th ...
*Thursday, November 13, 2014 at 8:07am*

**Elementary Math**

X+(x+)+ (X+2)=3x+ 3 then anotgher student wrote (X-1)+ X + (X+1)=3X which one is correct
*Friday, November 7, 2014 at 5:20pm*

**Preschool Creative Thinking**

The eclectic theoretical approach that most teachers use means that: a. the major development theories are used on different days of the week on a rotating basis. b. one major developmental theory is used for toddlers, another for preschool, another for kindergarten, and the ...
*Friday, November 7, 2014 at 3:18pm*

**Elementary manth**

Jose said that the square root -X=3 has no solutino since teh square root is a negative, is this true. I think it does has a solution
*Wednesday, November 5, 2014 at 5:36pm*

**The practice of working with school age children**

_______ offer summer specialty activities that often interest teens. A. Camps B. Child care facilities C. Public elementary schools D. Libraries A.
*Wednesday, October 29, 2014 at 7:29pm*

**Theories and issues in working with school-age chi**

According to the National Center for Educational Statistics, which of the following is a false statement? A. Boys are more likely than girls to fail or drop out of school. B. When it comes to grades and homework, boys outperform girls in elementary, secondary, high school, ...
*Friday, October 24, 2014 at 4:00pm*

**Algebra**

Business Computers English Foreign Languages Health Home Economics Math Music Physical Education Science Social Studies GRADE LEVELS Preschool Kindergarten Elementary School 1st Grade 2nd Grade 3rd Grade 4th Grade 5th Grade 6th Grade 7th Grade 8th Grade High School 9th Grade ...
*Thursday, October 9, 2014 at 8:35pm*

**coolkid1234567890**

Purple Blue elementary school is 187 miles from washington dc. According to google maps it should take about 3 hours and 5miutes to get there. What is our speed. Please tell me how you did it and the answer. Thank you
*Thursday, October 9, 2014 at 5:56pm*

**Reading**

I would like someone to revise this for me. Thanks! *** **** 10/5/14 Ever since I can remember I have lived in Philadelphia. I have many nice memories from Philadelphia, and I am fortunate enough to have a relatively normal life without having to experience pain of suffering. ...
*Wednesday, October 8, 2014 at 10:36am*

**Language Arts**

Hello everyone! I was just wondering if you could revise this autobiographical essay for me? Thanks for your time! *** **** 10/5/14 Ever since I can remember I have lived in Philadelphia. I have many nice memories from Philadelphia, and I am fortunate enough to have a ...
*Tuesday, October 7, 2014 at 1:18pm*

**Physics**

The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(e^qV/kT−1) where Jph is the photocurrent density, J0 the saturation current density, q the elementary charge, V the voltage, k the Boltzmann's constant, and T the ...
*Friday, October 3, 2014 at 12:48am*

**Economics**

State of the good is pure private, pure punlic, or mixed. 1. County zoo 2. UPS Delivery 3. Air conditioning 4. Flood control projects 5. Elementary education 6. Pollution 7. Math tutor I think they are: 1. Mixed 2. Mixed 3. Mixed 4. How is a project a good? 5. Pure private 6. ...
*Thursday, October 2, 2014 at 6:38pm*

**Elementary Satistics**

Test the following function to determine whether it is a probability function. If it is not, then make it into a probability function. (Give your answers correct to one decimal place.) R(x) = 0.2, for x = 0, 1, 2, 3, 4 (a) List the distribution of probabilities. R(0) =0 ...
*Sunday, September 21, 2014 at 3:30pm*

**psychology**

Carrie is a fifth grader at Gorrie Elementary school—a school near an affluent neighborhood in a suburb of a major city. Carrie, who lives with her divorced mother—a high school dropout with a steady job as a minimum wage housekeeper—seems to have limited ...
*Wednesday, September 17, 2014 at 9:48pm*

**elementary**

Magic square 13.6
*Wednesday, September 17, 2014 at 9:11pm*

**Psychology**

Carrie is a fifth grader at Gorrie Elementary school—a school near an affluent neighborhood in a suburb of a major city. Carrie, who lives with her divorced mother—a high school dropout with a steady job as a minimum wage housekeeper—seems to have limited ...
*Monday, September 15, 2014 at 1:07am*

**English Grade 9 Essay Check/SUggestions For improv**

Hi, so my name is Katherine, and I am in grade 9. Hello Ms.Fowlks. The three classes I am taking are spanish, english, and oklahoma history. Sorry, I have to give a bit of information so my teacher knows I wrote this and it is not plagiarized. :D Anyways, can you give any ...
*Saturday, September 13, 2014 at 3:16pm*

**Curriculum**

When are children who live with overly critical or controlling adults particularly vulnerable? A. During years two and three, when they're exercising increased autonomy B. During elementary school, when involved in real task completion C. During preadolescence, when they ...
*Saturday, September 13, 2014 at 10:01am*

**The Curriculum**

When are children who live with overly critical or controlling adults particularly vulnerable? A. During years two and three, when they're exercising increased autonomy B. During elementary school, when involved in real task completion C. During preadolescence, when they ...
*Friday, September 12, 2014 at 9:43pm*

**The Curriculum**

When are children who live with overly critical or controlling adults particularly vulnerable? A. During years two and three, when they're exercising increased autonomy B. During elementary school, when involved in real task completion C. During preadolescence, when they ...
*Sunday, September 7, 2014 at 10:54am*

**Precedence rules for the algebra community**

Precedence of operators In simple algebra, there is a set of precedence (priority) of operations that should be respected in order that everyone evaluates mathematical expressions in the same way. Although these rules have been taught in elementary school or junior high school...
*Tuesday, September 2, 2014 at 12:11pm*

**POL201 **

A policy area in the middle of these cross-currents is elementary and secondary education – a subject traditionally under local control, with some oversight by the states. However, during the last four decades – especially since 2001 – the national government&#...
*Friday, August 1, 2014 at 3:53am*

**statistics**

M&M’s The candy company claims that 10% of the M&M’s it produces are green. Suppose the candies are packed at random into small bags containing about 25 M&M’s per bag. A class of elementary students learning about percentages opens several bags, counts the ...
*Monday, July 14, 2014 at 3:27pm*

**statistics**

M&M’s The candy company claims that 10% of the M&M’s it produces are green. Suppose the candies are packed at random into small bags containing about 25 M&M’s per bag. A class of elementary students learning about percentages opens several bags, counts the ...
*Sunday, July 13, 2014 at 10:36pm*

**Lake Arbor Elementary**

Marjorie has 28 feet of trim to use as edging on a rectangular blanket she wants to make. What is the length and width of two blanket sizes she could make
*Tuesday, June 3, 2014 at 6:59pm*

**PE--Check my answers :)**

Which resource would be the best choice to learn more information about studying martial arts? dance studio *** local bait shop phone book public golf course 2. At the 8th grade dance, Myron asks Janelle if she would like to dance with him seconds before Octavio asks Janelle ...
*Tuesday, May 20, 2014 at 4:54pm*

**Statistics**

A study found that 82% of elementary students buy lunch at school at least once a month. How large a sample would be necessary to estimate the true proportion within four percentage points with 95% confidence
*Wednesday, May 14, 2014 at 12:50pm*

**troy Academy**

based on the results of the studies, what should an elementary school teacher do to ensure that a child with an unusual name develops normal intellectual ability
*Thursday, May 8, 2014 at 4:38pm*

**PLEASE HELP!! Org. & Admin. of Sports & Recreation**

The least valid qualification in hiring a coach is: (A) A College superstar B Thorough knowledge of rules and techniques C Ability to teach D Understanding of players E Desirable personality The interests of all athletes participating are best served if: (C) A The present ...
*Saturday, May 3, 2014 at 10:47am*

**Homework helpline?**

Is there a homework helpline for college level I can call and ask homework questions through the phone? I know there is one that is available for elementary school and middle school, and it would seem a little ludicrous for one to be available for this level, but are there any...
*Monday, April 28, 2014 at 6:41pm*

**Statistics**

Prof. C is studying a population of the elementary school pupils in a school district with data on all its children. Another prof. suggests he calculate a confidence interval to estimate the mean age of the children. Prof C responds that it is not necessary. Explain why Prof. ...
*Wednesday, April 23, 2014 at 11:51pm*

**ENGish**

1. What are the characteristics of an effective television newscaster? Explain. 2. Why are so many people over the age of twenty-one entering college? Discuss. 3. What could be done to make the public less hesitant to report crime? 4. Do Americans seem unable to relax in ...
*Monday, April 21, 2014 at 11:07pm*

**math (Matrix algebra)**

solve the equations by using a) the adjoint matrix b) elementary row operations i) x+y+z=6 2x-y+z=3 x+4y-z=6 ii) 3p-3q+r=1 -3p+5q-2r=-1 p-2q+r=3 iii)-12a+b+17c=-14 2a-b+3c=5 8a+b-13c=-3 thanks sir/madam
*Wednesday, April 16, 2014 at 4:10am*

**math (Matrix)**

solve the equations by using a) the adjoint matrix b) elementary row operations i) x+y+z=6 2x-y+z=3 x+4y-z=6 ii) 3p-3q+r=1 -3p+5q-2r=-1 p-2q+r=3 iii)-12a+b+17c=-14 2a-b+3c=5 8a+b-13c=-3 thanks sir/madam
*Tuesday, April 15, 2014 at 10:20pm*

**maths (matrix)**

solve the equations by using a) the adjoint matrix b) elementary row operations i) x+y+z=6 2x-y+z=3 x+4y-z=6 ii) 3p-3q+r=1 -3p+5q-2r=-1 p-2q+r=3 iii)-12a+b+17c=-14 2a-b+3c=5 8a+b-13c=-3 thanks sir/madam
*Tuesday, April 15, 2014 at 1:46pm*

**Elementary Algebra**

"The university of Oklahoma maintains a fleet of vehicles to rent to university departments. To transport equipment, the School of Drama needs to rent either a cargo can or a pickup truck for one day. The cargo van costs $28 for a day, plus $0.22 per mile. The pickup ...
*Tuesday, April 15, 2014 at 12:58pm*

**math (Matrix)**

solve the equations by using a) the adjoint matrix b) elementary row operations i) x+y+z=6 2x-y+z=3 x+4y-z=6 ii) 3p-3q+r=1 -3p+5q-2r=-1 p-2q+r=3 iii)-12a+b+17c=-14 2a-b+3c=5 8a+b-13c=-3 thanks sir/madam
*Tuesday, April 15, 2014 at 6:02am*

**Calculus Help Please Urgent!!!**

find the limit algebraically. Use L'Hospital's Rule where appropriate. If there is a moare elementary method, consider using it. If L'Hospital's Rule doesn't apply, explain why lim -> 0 (cot(x)-(1/x)) show work please!!!
*Sunday, April 13, 2014 at 10:39pm*

**Elementary Statistics**

There are 100 questions from an SAT test, and they are all multiple choice with possible answers of a,b,c,d,e. For each question, only one answer is correct, find the standard deviation for the numbers of correct answers for those who make random guesses for all 100 questions.
*Friday, April 11, 2014 at 3:22pm*

**Math**

In Mrs. Julie's classroom the ratio of boys to girls is 12 to 8. If the entire elementary school has a population of 400 students, how many would you expect to be girls?
*Sunday, March 30, 2014 at 7:30pm*

**MATH**

there are 400 students at smith Elementary school 1/4 of the students are in fourth and fifth grade, 1/10 of the students are in grade 3, 2/8 are in second grade and 2/5 are in first grade . How many kids are in each grade? (4th and 5th have an equal amount)
*Monday, March 24, 2014 at 3:14pm*

**Physics**

An ice puck of mass m revolves on an icy surface in a circle at speed v at the end of a horizontal string of length L. The tension in the string is T Write the equation for centripetal force, and substitute the values T and L appropriately. Then with a bit of elementary ...
*Thursday, March 20, 2014 at 2:32pm*

**Algebra **

1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 2) of the 125 students in an elementary school, 89 ...
*Saturday, March 15, 2014 at 11:27pm*

**Algebra **

1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 2) of the 125 students in an elementary school, 89 ...
*Friday, March 14, 2014 at 12:33pm*

**Algebra **

1) If N is the set of natural numbers that are factors of 18, represent this set in roster form. 2) Suppose U={1,2,3,4,5,6,7,8,9,10} is the universal set and A={1,4,5,9,10} What is A? 3) The wrestling team is holding a car wash. The teams goal is to raise at lease 252 and each...
*Friday, March 14, 2014 at 1:16am*

**Algebra **

1) There are two pet stores in zacharys town. There are dogs, cats, and hamsters at the first pet store. The second store has dogs, rabbits, and fish. Write a set that represents all of the different pets stores in the town. 2) of the 125 students in an elementary school, 89 ...
*Thursday, March 13, 2014 at 10:21pm*

**Math Geometry **

Marisol is painting on a piece of canvas that has an area of 180 square inches. The length of the Painting is 1 1/4 times the width. What are the dimensions of the painting this is for elementary school so make it simple
*Friday, March 7, 2014 at 5:06pm*

**AED **

Read the following scenario: You are a second-grade teacher at Happy Valley Elementary School. You are teaching language arts and social studies. Your classroom of 21 students consists of 7 white students, 5 Latino students, 4 African American students, 3 Native American ...
*Thursday, February 27, 2014 at 1:04pm*

**Hiram Elementary School**

Maniac Magee
*Tuesday, February 25, 2014 at 5:06pm*

**Thesis statement**

The subject of this paper is my experience with teaching elementary school children” Is this a weak or strong thesis statement how can you make it stronger or improve it? what makes it weak?
*Tuesday, February 18, 2014 at 12:15am*

**Thesis Statement**

“The subject of this paper is my experience with teaching elementary school children” Is this a weak or strong thesis statement
*Monday, February 17, 2014 at 11:32pm*

**Math**

The 80 students in the 5th grade at north side elementary school voted for their favorite animal after a trip to the zoo.the elephant received 3/5 of the votes.how many votes did the elephant receive.
*Wednesday, February 5, 2014 at 8:26pm*

**Statistics**

WEB CALCULATOR EXERCISE Descriptive Statistics 1 The table below presents data for a sample of people who completed a religious survey. Age Gender Denomination Church Attendance 56 1 7 4 46 2 6 5 49 2 6 5 49 1 1 5 27 2 9 5 51 1 4 2 47 2 2 3 67 1 5 4 49 2 2 6 33 1 12 6 55 2 9 5...
*Tuesday, January 28, 2014 at 8:56pm*

**intro to computers**

what type of device is characteristic of an enterprise environment? a workstation used by a retired person. a workstation used at an engineering firm. a tablet computer used by an elementary school student a notebook used by a college student
*Tuesday, January 21, 2014 at 6:33pm*

**Grammatical errors?**

Dear Prospective Host Teacher and Principal: Thank you for allowing me to be a part of your learning community. I am quite jubilant to have my first PPIE experience with you. Education has interested me for a large portion of my life and I often find myself volunteering with ...
*Friday, January 17, 2014 at 11:16pm*

**Literature Essay (Writeacher and/or Ms.Sue)**

What are your opinions? Have I written according to the topic I was give? "Write an essay explaining in what ways people today are more fearful than people in past generations. You may use examples from real life, the selection you just read, books, movies, or television ...
*Sunday, January 12, 2014 at 9:25pm*

**Spanish Foreign Language**

Hi, My current Spanish class is performing an oral presentation on advice for losing weight or being fit. I was wondering if somebody could proofread my Spanish speaking portion and point out the obvious errors? I'm terrible at Spanish so there's probably quite a few ...
*Tuesday, January 7, 2014 at 11:01pm*

**Elementary Math**

This is going to seem like a simple question but how do i solve this without dividing.. 5th grade math mom Question: Lester's car can go 15.4 miles on 1 gallon of gas. How far can he go on 0.7 gallons? Thanks
*Thursday, January 2, 2014 at 11:38pm*

**Statistics**

Can someone please help with this problem to advise how to set up and in the book Essential of Statistics for the Behavioral Sciences. A researcher is investigating the effectiveness of a new study-skills training program for elementary school children. A sample of n=25 third-...
*Friday, December 20, 2013 at 10:36pm*

**Math**

"You have been asked to help build a rectangular play area at the new Tracy elementary school. You arrive at the site eager to begin! Much to your surprise, the only things available to work with are two pieces of rope. Explain how you can use the rope to find the ...
*Friday, December 20, 2013 at 11:43am*

**English**

What is a PERFECT essay about Sandy Hook Elementary School?
*Sunday, December 15, 2013 at 5:46pm*

**Math2**

A "quick picture" is an estimate than? 5 x 2.7 ..... 5 x 3= 15 Its been a long time since elementary school and I do not remember "quick picture" The question was How can you use a "quick picture" to find 5 x 2.7? the answer is 13.5.......an ...
*Thursday, December 5, 2013 at 1:41pm*

**Physical Science**

What are the noninvasive benefits of the medical technologies that rely on physics of elementary particles?
*Monday, December 2, 2013 at 12:36pm*

**Physical Science**

What are three medical technologies that rely on the physics of elementary particles?
*Monday, December 2, 2013 at 12:32pm*

**5th grade math**

In the fourth grade class at Baker Elementary, 9 students are left-handed. The fifth grade has 7 left-handed students and the sixth grade has 6. The number of students in the fourth grade is 3 times the number of left-handed students in the class. The sixth grade has 3 more ...
*Sunday, December 1, 2013 at 8:35pm*

**elementary statistics**

A statistics professor is used to having a variance in his class grades of no more than 100. He feels that his current group of students is different, and so he examines a random sample of midterm grades (listed below). At 0.05 alpha level can it be conculded that the variance...
*Saturday, November 30, 2013 at 10:30pm*

**elementary statistics**

A statistics professor is used to having a variance in his class grades of no more than 100. He feels that his current group of students is different, and so he examines a random sample of midterm grades (listed below). At 0.05 alpha level can it be conculded that the variance...
*Saturday, November 30, 2013 at 7:44pm*

**TRIPLE JUNCTION SOLAR CELL - I **

The figure below presents the EQE of a triple junction solar cell with junctions A, B and C under short circuited (V = 0 V) condition. EQE table is: A: EQE = 0.7 wavelength= 300 to 650 nm B: EQE = 0.9 Wavelength= 650 to 850 nm C: EQE = 0.8 Wavelength= 850 to 1250 nm a) What is...
*Saturday, November 23, 2013 at 4:02am*

**Chemistry**

I am working on a solid chemistry problem, but I do understand what e^ means. Is it the elementary charge? or Faraday constant. Please help.
*Saturday, November 16, 2013 at 7:16am*

**Statistics**

A random sample of 50 students chosen from an elementary school with 400 students was found to have a mean allowance of $26 per week with a standard deviation of $8. Obtain a 98% confidence interval for the total amount of allowance money given to students in this school per ...
*Wednesday, November 13, 2013 at 4:32pm*

**Language**

I miss placed my word list and my assignment is due tomorrow and I need to access my word list from my teacher Shirley Carr at Adlai Stevenson elementary second grade class can this site help me with that I am not a member and do not know if my teacher or school is either
*Monday, November 11, 2013 at 3:37pm*

**English**

We heard tommy's loud drumming clearly despite the _______ of the elementary school band practice. A. Esprit B. Concordance C. Animadversion
*Monday, October 28, 2013 at 4:09am*

**Solar Energy Please Help**

Figure 1 shows a simplication of the AM1.5 solar spectrum at 1000W/m2. The spectrum is divided in three spectral ranges: A for 0nm<λ<620nm B for 620nm<λ<1240nm C for 1240nm<λ<1860nm The photon flux in each spectral range is also shown in the ...
*Saturday, October 26, 2013 at 2:50pm*

**Solar Energy Please Help**

The figure below presents the EQE of a triple junction solar cell with junctions A, B and C under short circuited (V = 0 V) condition. a) What is the bandgap (in eV) of the absorber layer of the junction A? b) What is the bandgap (in eV) of the absorber layer of the junction B...
*Saturday, October 26, 2013 at 2:47pm*

**Psychology/ Ms Sue**

Please check my answers 1. During puberty, boys testosterone production increases up to 5 times the level in childhood? True 2. Babies of teenagers have a higher risk of birth complications? True 3. Most STIs are fatal if not treated properly? False 4. Analytic thinking and ...
*Sunday, October 20, 2013 at 4:42pm*

**Solar Energy Help ASAP**

The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(eqVkT−1) where Jph is the photo-current density, J0 the saturation-current density, q the elementary charge, V the voltage, k the Boltzmann's constant, and T the ...
*Thursday, October 17, 2013 at 3:50pm*

**ET3034TUx Solar Energy**

The current density of an ideal p-n junction under illumination can be described by: J(V)=Jph−J0(eqVkT−1) where Jph is the photo-current density, J0 the saturation-current density, q the elementary charge, V the voltage, k the Boltzmann's constant, and T the ...
*Wednesday, October 16, 2013 at 2:20pm*

**help**

Assume that the salaries of elementary school teachers in the U.S. are normally distributed with a mean of $37,000 and standard deviation of $3500. The cutoff salary for teachers in the bottom 12% is
*Sunday, October 13, 2013 at 12:23pm*

**English**

I am writing a personal narrative and we have to include significance like what we learned from that memory. My memory is about me getting stung by a bee in elementary school but I can't think of any significance. Help please? Thanks!
*Thursday, September 26, 2013 at 8:09pm*

**elementary functions**

f(x)=x(squared)+x-3. compute the difference quotient: (f(x+h)-f(x))/h
*Tuesday, September 17, 2013 at 9:27pm*

**Math**

There are 648 students in 5th grade at oak elementary school. For the upcming field trip,they need to be split into groups of 25. About how many groups are needed?
*Thursday, September 12, 2013 at 7:37pm*

**statistics**

Researchers conducted a survey of parents of 66 kindergarten children. The parents were asked whether they played games with their children. The parents were divided into two groups: working class and middle class. The researchers wanted to know if there was an association ...
*Friday, August 23, 2013 at 9:08pm*

**Math/Statistics**

A statistics teacher believes that the final exam grade for her elementary stats class have a normal distribution with a mean of 82 and a standard deviation on 8. Find the score which separates the top 10% of the scores from the lowest 90% of the scores.
*Sunday, August 11, 2013 at 8:51pm*

**Elementary mechanics**

Given that the mass and radius of jupiter are respectively 190000000kg 7150000km.Calculate the escape velocity from the surface of the planet(a)11.2 km/s(b)33.3km/s(c)59.5km/s(d)110.4km/s
*Monday, July 15, 2013 at 4:30pm*

**Elementary mechanics**

what is common to the variation in the range and the hieght of a projectile. I'm thinking of horizontal acceleration pls what do u think
*Monday, July 15, 2013 at 12:07pm*

**Elementary mechanics**

A force of 2i+7jN acts on a body of mass 5kg for 10 seconds. The body was initally moving with constant velocity of i-2jm/s.Find the final velocity of the body in m/s, in vector form. (a)5i+12j(b)12i-5j(c)10i-7j(d)7i+10j
*Sunday, July 14, 2013 at 3:12pm*

**Elementary mechanics**

(Q1) 2 forces act on a point object as follows: 100 at 170 and 100 at 50.Find the resultant force (a)110N at 50 (b)110N at 100 (c)100N at 110 (d) 100N at 50 (Q2) given 3 vectors a=-i-4j+2k,b=3i+2j-2k,c=2i-3j+k,Calculate a-(b-c) (a)-6(b)6(d)9(d)-9 (Q3)The resultant of ...
*Friday, July 12, 2013 at 5:21pm*

**elementary algebra**

(3b+1)^2=16
*Thursday, June 6, 2013 at 2:21pm*

**Statistics**

In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
*Sunday, June 2, 2013 at 11:24pm*

**Statistics**

In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
*Sunday, June 2, 2013 at 11:24pm*

**Statistics**

In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
*Sunday, June 2, 2013 at 11:24pm*

**Statistics**

In an elementary school, 25% of children wear glasses. Suppose that a random sample of 64 children is selected. Find the mean number of children in the sample who wear glasses. Round your answer to the nearest integer.
*Sunday, June 2, 2013 at 11:24pm*

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