You sure this is right? It can't be solved using elementary functions.
Thursday, December 1, 2011 at 5:10am
why is it obvious that 3/4 x 8/5 = 6/5?
Tuesday, November 29, 2011 at 9:32pm
Suppose that weights of 5th grade elementary boys are normally distributed with mean µ =90 lbs and variance ó2 = 4 lbs. Find the weight that corresponds to Q3 and interpret this measure of position.
Monday, November 28, 2011 at 12:36pm
First, please do not use all capitals. Online it is like SHOUTING. Not only is it rude, but it is harder to understand. Thank you. 99% = mean ± 1.645 SD, .005 of scores are beyond at each end. 82% = mean ± 1.342 SD, .09 of scores are beyond at each end. These ...
Saturday, November 26, 2011 at 1:01am
50 MATH PROFESSORS WERE ASKED HOW LONG IT TAKES TO GRADE A STUDENT'S HOMEWORK ASSIGNMENT. THE MEAN GRADING TIME FOR THE SAMPLE WAS36.2 MINUTES WITH A STANDARD DEVIATION OF 4.8 MINUTES. WHAT IS THE 82% CONFIDENCE INTERVAL FOR THE MEAN GRADING TIME OF ALL MATH PROFESSORS?
Friday, November 25, 2011 at 4:29pm
50 MATH PROFESSORS WERE ASKED HOW LONG IT TAKES TO GRADE A STUDENT'S HOMEWORK ASSIGNMENT. THE MEAN GRADING TIME FOR THE SAMPLE WAS 36.2 MINUTES WITH A STANDARD DEVIATION OF 4.8 MINUTES. WHAT IS THE 99% CONFIDENCE INTERVAL FOR THE MEAN GRADING TIME OF ALL MATH PROFESSORS?
Friday, November 25, 2011 at 3:59pm
Calculus - Correct Problem?
You sure this is right? Even online integrators like wolfram cannot evaluate it using elementary functions
Wednesday, November 23, 2011 at 1:36pm
You are given the four points in the plane A = (-3,7), B = (-1,-6), C = (4,6), and D = (6,-1). The graph of the function f(x) consists of the three line segments AB, BC and CD. Find the integral interval -3 to 6 f(x)dx by interpreting the integral in terms of sums and/or ...
Thursday, November 17, 2011 at 5:51pm
Analyze the realtion between Angela nd Gracey. It is correct? The book Angela, written by James Moloney, deals with the friendship of Angela and Gracey, which drifts apart by a historical conflict, because the girls come from two completely different social ...
Sunday, November 13, 2011 at 9:09am
7th Grade English
Remember, your assignment is to write about what diversity means to YOU. Have you had any friends with different backgrounds? Have you ever been interested in the customs and languages of other people? When my children were growing up, we lived in a community that was almost ...
Thursday, November 10, 2011 at 7:30pm
how much did maria bean plant grow between day 2 and day 3
Wednesday, November 9, 2011 at 6:47pm
10 divided by 2 = 5 ponies 10 divided by 3 = 3 3 times 2 = 6 dolls
Wednesday, November 9, 2011 at 6:29pm
A. You can assume symmetry between length and width, which reduces to the width(=length) and the height. Furthermore, one of the two can be eliminated from the volume relation: w^2h=500000 So the minimization problem is reduced to one single dimension as in elementary calculus...
Sunday, November 6, 2011 at 9:22pm
An article published in the "New York Times" reported the results of a large-scale study on homework for elementary school children. The study indicated that the lowest-achieving students spent more time on homework than children who received higher grades. Using ...
Saturday, November 5, 2011 at 10:06am
"1) Observe an elementary mathematics lesson. Write an essay of 1,500-1,750 words that addresses the following issues and summarizes your observations:" I stopped reading right there. Clearly, ONLY YOU can do all this. If all you do is post your entire assignment, ...
Friday, October 28, 2011 at 5:01pm
1) Observe an elementary mathematics lesson. Write an essay of 1,500-1,750 words that addresses the following issues and summarizes your observations: a) What is the importance of having standards in mathematics? How do standards improve mathematics instruction? Compare and ...
Friday, October 28, 2011 at 4:59pm
A town decides to build a playground using one of the existing walls beside an elementary school. What is the maximum area they can enclose using only 100ft of donated fence?
Friday, October 28, 2011 at 2:23pm
Here is what I did if you can please tell me where I went wrong would be appreciated. resulting compound phosphorous oxide mass = 1.145g # of moles of Phosphorus = 0.500g/30.97g/mol = 0.0161446mol This step is OK. # of grams of combined phosphorus oxide = 1.145g-0.500g (P) = 0...
Sunday, October 16, 2011 at 9:08pm
Proof read please
You have to get involved!ï¿½ From the first day of school, freshman year of high school, those were the words that constantly fell from my momï¿½s mouth. I would not go a week without hearing those five words. At that time I did not ...
Saturday, October 15, 2011 at 5:39pm
Proof read please
I am entering an essay scholarship and would love if some of you could proof read my essay. Thanks so much! Title: Be a Part of Something Greater You have to get involved! From the first day of school, freshman year of high school, those were the words that ...
Saturday, October 15, 2011 at 11:22am
at a particular school with 200 male students, 58 play football 40 plays basketball and 8 plays both. what is the probablity that a randomly selected male student plays neither
Monday, October 10, 2011 at 11:10am
Let x = the number of pages that John read. x + 4x = 40 5x = 40 x = 8 John read 8 pages. Carol read 8 * 4 = 32 pages 32 + 8 = 40
Friday, October 7, 2011 at 4:24pm
Carol reads four times as many pages than John. They read 40 pages together. How many more pages did Carol read than John. My answer is Carol read 16 pages more than John. Am I correct.
Friday, October 7, 2011 at 3:59pm
add. write the doubles fact used to solve each one. 0+1=1 6+7 =13 4+3=7 please explain how to use doubles plus 1 and doubles minus 1
Tuesday, October 4, 2011 at 7:44pm
I don't know what additional information you need. Start by answering the question as thoroughly as possible. If you are missing some information, go back and look for it. Here's some good advice for writing compare and contrast essays. http://www.manatee.k12.fl.us/...
Tuesday, October 4, 2011 at 5:35pm
Why can neutrinos travel immense distances through matter whereas other elementary particles cannot?
Sunday, October 2, 2011 at 6:52pm
Why can neutrinos travel immense distances through matter whereas other elementary particles cannot?
Saturday, October 1, 2011 at 11:30pm
1. Advocates of social skills building and role modeling would not be inclined to choose a Western style of play because Western play: A. Has a people focus, not an object focus B. Is impossible for many non-mainstream children to master. C. Lacks a rule-based orientation. D. ...
Thursday, September 29, 2011 at 8:30pm
early childhood education
1)according to the national center for education statistics which of th following is a false statement a)when it comes to grade and homework boys outperform girls in elementary secondary high school college and even graduate school. b)boys are more likely than girls to be ...
Wednesday, September 28, 2011 at 8:19pm
Arrays and Expanded Algorithm
How do you determine the product using an array.
Thursday, September 22, 2011 at 4:59pm
1. Subject: I Simple predicate: love Complete predicate: love my new basketball I'll be glad to check your answers for the other sentence.
Wednesday, September 21, 2011 at 5:13pm
what is the subject and predicate in this sentence. 1.I love my new basketball. also I need to know what the compound subject and , or compound predicate is for this sentence. 1. Amy and her coach worked out a plan.
Wednesday, September 21, 2011 at 5:05pm
i said 9 necklaces and 10 and 12 of each color???
Monday, September 19, 2011 at 4:33pm
mary has 108 red beads and 90 green beads she wants to use all the beads. how many necklaces can she make and how many of each color will be on each necklace
Monday, September 19, 2011 at 4:02pm
Zero degrees on the absolute scale is defined as the temperature with minimum possible energy associated with motion of elementary particles (atoms and molecules). Such a temperature can never be negative.
Sunday, September 18, 2011 at 8:40pm
Polk Elementary School has three classes for each grade level,kindergarten through fifth grade.If there is an average of 27 students per classroom,about how many students attend Polk Elementary School?
Wednesday, September 14, 2011 at 2:55pm
1mol of any substance = 6.022 * 10^23 elementary entities of that substance (be it atoms, molecules or whatever. Think of it as the chemist's "dozen" only it's 6.022 * 10^23 rather than 12.) For finding the amount of grams in 1 mol of an element, find the ...
Wednesday, September 14, 2011 at 1:50am
In one elementary school, 200 students are tested on the subject of Math and English. The table below shows the mean and standard deviation for each subject. Mean SD Math 67 9.58 English 78 12.45 One students Math score was 70 and the same individuals English score...
Monday, September 12, 2011 at 10:48pm
It would be 3 out of 81.
Monday, September 12, 2011 at 9:32pm
MATH - typo
There is probably a typo in the second equation. The first equal sign (between x2 and x3) should be a + or a -. x1+ x2 = X3 = 4 Curiously both corrections using a + or - give integer solutions. Next, Gauss-Jordan elimination requires the matrix be transformed into a diagonal ...
Sunday, September 11, 2011 at 8:47am
At 473 K, for the elementary reaction 2NOCl <=> 2NO + Cl_2 k(1) =0.078 L/mol*s k(-1)=470 L^2/mol^2*s A sample of NOCl is placed in a container and heated to 473 K. When the system comes to equilibrium, [NOCl] is found to be 0.49 mol/L. Find Cl_2 and NO concentrations
Thursday, September 8, 2011 at 10:16pm
Wednesday, September 7, 2011 at 7:02pm
Thank you for responding. The subject matters because we have many experts who troll this board looking for questions they can answer. Since we're all volunteers who have limited time, some experts only look at the questions that are clearly in their field. I'm sorry...
Tuesday, September 6, 2011 at 10:17pm
If the standard deviation is $10, 000, can the president conclude that there is a difference? At alpha = 0.10, is he correct?
Monday, September 5, 2011 at 1:27am
A small droplet of oil with mass of 1.84×10-15 kg is held suspended in a region of uniform electric field directed upward with a magnitude of 6625 N/C. Is the excess charge on the droplet positive or negative? NEGATIVE b.How many excess elementary charges reside on the ...
Thursday, September 1, 2011 at 10:47pm
Math for the middle school and elementary teacher
Both 153 and 135 are correct. I don't see any other solutions.
Thursday, September 1, 2011 at 4:52pm
Math for the middle school and elementary teacher
what number am I? I am a 3-digit number. I am equal to the sum of the cubes of my digits. I am between 100 and 200. My digits are odd. Explain whether or not other solutions to the riddle are possible. My answer was 153...is that correct? please let me know. could 135 work too?
Thursday, September 1, 2011 at 4:50pm
teachers aide curriculum comtent
when are children first developmentally ready to begin learning science? (a)kindergarten (my answer) (b)fifth grade (c)junior high (d)high school according to recent science curriculum guidelines what percent of class time should students spend in hands on learning experiences...
Saturday, August 27, 2011 at 9:39am
Every day, a bakery owner buys either butter(B) or ghee(G).The type of item purchased in consecutive days is to be recorded.List the sample space.If a different type of item is purchased than in the previous day, we say that there is a switch.Let X denote the number of ...
Saturday, August 13, 2011 at 5:23am
Let x = husband's salary. x + x + 1900 = 59,100 2x + 1900 = 59,100 2x + 1900 - 1900 = 59,100 - 1900 2x = 57,200 x = 57,200/2 x = 28,600
Monday, August 8, 2011 at 8:11pm
The question is about compound interest, not compounds. n is presumably the number of interest payments per year. If so, the balance at the end of 20 years is P*(1 + r/n)^(n*t) = 2500*(1.06)^40 = ? Do the numbers. The principal will double about every 6 years, so there will be...
Wednesday, August 3, 2011 at 9:39am
These sites explain how to write a compare/contrast paper. http://www.readwritethink.org/files/resources/interactives/compcontrast/ http://www.bookrags.com/articles/5.html http://www.manatee.k12.fl.us/sites/elementary/samoset/rcccon1.htm http://www.unc.edu/depts/...
Tuesday, August 2, 2011 at 1:15pm
elementary and intermediate algebra
Problems of this type are solvable by means of the following. If it takes one person 5 hours to paint a room and another person 3 hours, how long will it take to paint the room working together? 1--A can paint a room in 5 hours. 2--B can paint a room in 3 hours. 3--A's ...
Saturday, July 30, 2011 at 8:52am
elementary and intermediate algebra
Barry can do a certain job in 9 hours, whereas it takes Samuel 12 hours to do the same job. How long would it take them to do the job working together?
Friday, July 29, 2011 at 8:20pm
Solve this equation for x: 11x = 1260 + 5x
Tuesday, July 26, 2011 at 9:51pm
Bias can distort self-perception and causal attribution. The fundamental attribution error describes the tendency by one person to over-value personality based explanations for observed behaviors of another person, while at the same time under-valuing his or her specific ...
Friday, July 22, 2011 at 7:18pm
I have expanded on my answer and would like to know if this is correct and if anything else should be added. Answer: Bias can distort self-perception and causal attribution. The fundamental attribution error describes the tendency by one person to over-value personality based ...
Friday, July 22, 2011 at 11:40am
can you check to see if i identified the verbs correctly and used the correct tense. 1. For as long as I can remember, education has been a constant factor in my life. ( present progressive) 2. I received my first academic award in elementary school and it changed my whole ...
Friday, July 22, 2011 at 12:21am
What about the rest of the essay? I will move the quote. Ever since I can remember people have always commented on my height, this made me very uncomfortable and awkward about it around my peers. Others acted as if my height was built on a grand scale like the Washington ...
Monday, July 18, 2011 at 9:44pm
I needed to change my thesis statement(last sentence). It was too long. Please review. Imagine being 63 in the eighth grade and everyone in the school making comments about your height. There are definitely advantages and disadvantages to being tall. My best friend...
Monday, July 18, 2011 at 8:44pm
Here is my entire essay: I thought the last sentence in the 1st paragraph would be my thesis statement. Imagine being 63 in the eighth grade and everyone in the school making comments about your height. There are definitely advantages and disadvantages to being ...
Monday, July 18, 2011 at 10:49am
Sorry this was my 1st and the one above is my 2nd. Imagine being 63 in the eighth grade and everyone in the school making comments about your height. There are definitely advantages and disadvantages to being tall. My best friends mother sent me a quote ...
Sunday, July 17, 2011 at 9:43pm
In front of Hey should be the opening quote = "Hey... A comma after elementary school, would give someone pause for a breath (and/or emphasis) basketball scholarship offers = sounds better with less sibilant (s) sounds? advantages of OR in? Nicely done---just a few ...
Wednesday, July 13, 2011 at 10:03am
This is the first paragraph of my essay, how does it look? Imagine being 63 in the eighth grade and everyone in the school making comments about your height. There are definitely advantages and disadvantages to being tall. My best friends mother sent me a ...
Wednesday, July 13, 2011 at 9:26am
Here is my first paragraph of my essay: Imagine being 63 in the eighth grade and everyone in the school making comments about your size. There are definitely advantages and disadvantages to being tall. My best friends mother found a quote written by Bill ...
Tuesday, July 12, 2011 at 10:56pm
Look up Doppler. This question is pretty elementary in that subject.
Sunday, July 10, 2011 at 10:03pm
Ouality physical education is needed in elementary schools so students can develop healthy lifestyle and learn to take care of the the body from a young age.
Wednesday, June 29, 2011 at 9:46pm
I notice a contradiction in your definition of f(x) you have f(x) = 3 when x = 2 and then f(x) = 4-x when x ≥ 2 So which is it for x = 2 ? Other than that, I really feel you should be able to graph that function without any help if you are studying Calculus. This is very...
Thursday, June 23, 2011 at 12:15am
how many seven digit telephone numbers are possible if digits can be repeated?
Sunday, June 12, 2011 at 6:14pm
The machine will be working if 1. no part fails ---> (.8)^7 2. 1 part fails ----> C(7,1)(.2)(.8)^6 3. 2 parts fail ---> C(7,2)(.2^2)(.8^5) 4. 3 parts fail ---> C(7,3)(.2^3)(.8^4) add them up
Wednesday, June 8, 2011 at 8:21pm
A machine has 7 identical components which function independently. The probability that a component will fail is .2. The machine will stop working if more than three components fail. Find the probability that the machine will be working?
Wednesday, June 8, 2011 at 7:56pm
Wednesday, June 8, 2011 at 7:53pm
A manager needs to fill three positions, computer softer engineer, team-leader, and test engineer. The manager finds 5 applicants that qualify for all three jobs. How many different ways can the manager place those 5 people into the three possible positions?
Wednesday, June 8, 2011 at 7:44pm
Wednesday, June 8, 2011 at 7:34pm
A class consists of 39 woman and 42 men. If a student is randomly selected, what is the probability that the student will be male?
Wednesday, June 8, 2011 at 7:29pm
How can WE answer that for YOU? We have not been in your classes. You might try some of the following links for ideas: http://search.yahoo.com/search?fr=mcafee&p=what+one+would+learn+in+elementary+science Sra
Wednesday, June 8, 2011 at 10:13am
what have you learned in elementary science with meaning?
Wednesday, June 8, 2011 at 4:42am
You need to derive the formula for: Sum from j = 0 to N of j^2 There are many different ways to do this, the more advanced math you know, the simpler it gets :). An elementary method is to consider summing (j+1)^3 - j^3 instead of j^2. Obviously, if you sum a function of the ...
Tuesday, May 31, 2011 at 2:45pm
elementary aed 201
Identify internal or external rewards that affect recruitment and retention of quality teachers. How do such rewards influence recruitment or retention? How might these rewards shift as new accountability-centered teacher reforms are proposed, such as merit pay and competency ...
Monday, May 30, 2011 at 11:49am
Z = (score-mean)/SD Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion Related to the Z score you calculate.
Sunday, May 29, 2011 at 9:46pm
The distribution of cholesterol levels in teenage boys is approximately normal with u=170 and o=30. Levels above 200 warrent attention. Find the probability that boy has a cholesterol level greater than 225.
Sunday, May 29, 2011 at 9:21pm
Sunae's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms will be rooms 12, 14, or 16. All of her friends but 4 are going to room 12, all but 4 are going to room 14, and all but 4 are going to room 16. ...
Saturday, May 28, 2011 at 12:36pm
school in general
I agree with Writeacher. I was double-promoted (skipped a grade) in elementary-middle school. In the long run, I'm not sure it was a good idea. If I had been a year older, I might have done better in my undergraduate years in college.
Friday, May 27, 2011 at 6:53pm
3/10 - [7(A-4)]
Friday, May 27, 2011 at 5:55pm
I need to translate to an algebraic expression. 3/10 decreased by the product of 7 and the difference of A and 4
Friday, May 27, 2011 at 5:50pm
s=rφ where φ is in radians. To change from radians to degrees, we multiply by 180°/π, since π radians equal 180°. For an angle a whole circle, it is 2π radians or 360°. So 2πr is the circumference, where φ=2π. (we know this formula from ...
Wednesday, May 25, 2011 at 12:04am
kettering elementary school
what do you do when you have 10 or more ones
Tuesday, May 24, 2011 at 5:53pm
This (badly chosen) question is asking you to stereotype. I am not sure there is one right answer to this because every person reacts differently. My brother and I played cowboys and Indians/cops and robbers and watched that kind of TV show all the time when we were in ...
Monday, May 23, 2011 at 2:29pm
Sabino took the ACT in 2003 and received a composite score of 22. If the mean and standard deviation for that year were, respectively, 20.8 and 4.8, what percent of all of the students who took the exams scored better than him?
Monday, May 16, 2011 at 9:27pm
MS. SUE can you please see if these answers are correct. I would greatly appreciate it. Thank you Which of the following statements best describes the instructional level achieved in an Informal Reading Inventory a. the student is unable to read a text b. the student can read ...
Monday, May 9, 2011 at 9:41pm
Theme studies take one theme and build math, language, science and social studies activities around it. For instance, Thanksgiving is a common theme study in elementary school.
Monday, May 9, 2011 at 9:36pm
Three charges are arranged in an equilateral triangle with sides of 4 cm. The coordinates and corresponding charge values are as follows: +4q at (-2,0); +2q at (2,0); -q at (0,3.464). The elementary charge of an electron is given by q = -1.602 x 10^-19 C. Determine the torque ...
Wednesday, May 4, 2011 at 10:08am
The physics of the DNA molecule. The two strands of the DNA molecule are held together by electrostatic forces. There are four bases which make up the DNA molecule, thymine (T), adenine (A), cytosine (C), and guanine (G). In two of the bases, thymine and adenine, an oxide ion ...
Thursday, April 28, 2011 at 12:55am
compute the variable of the random varible X
Monday, April 25, 2011 at 10:24pm
Spanish7th grade-Please check
Here are some sites on Mexican schools. Did you mean Elementary or High School? Yes, #1 and #2 are correct. http://search.yahoo.com/search?fr=mcafee&p=in+a+Mexican+school+is+each+course+offered+at+a+certain+time+every+day%3F Sra
Tuesday, April 19, 2011 at 7:57pm
physics - please hellp
I need help with two questions: 1) An object can only have a charge that is an integral multiple of the charge on the ___. Am I correct with "electron" as the answer? or possibly elementary charge? 2) The difference in potential between any two points in a field is ...
Tuesday, April 19, 2011 at 7:52pm
This is one of the questions that is asked in the back of the fifth edition of elementary statistics book. I am not sure of the answer, the number of the problem is an even number. Meaning that I cannot see the the answer in the back of the book:( So I was wondering if anyone ...
Wednesday, April 13, 2011 at 1:54pm
stereotypes in psychology
Are good dancers = ballerinas. drive Hummers. = GMC consumers. have more fun. = than who? are great lovers. = expats living in Asia. (My perception, at least) cause trouble. = trouble makers. are ditzy. = ditzy people are on welfare. = those needing assistance. live off other ...
Monday, April 11, 2011 at 10:07pm
Mary's group of close friends are going to fifth grade in September. All are going to Belleview Elementary and their homerooms will be room 12, 14, or 16. All of her friends but 4 are going o room 12, all but 4 are going to room 14, and all but 4 are going to room 16. Not ...
Sunday, April 10, 2011 at 11:31pm
I need help with this too. This stuff IS NOT taught as elementary math in my state..it is HIGH SCHOOL math.
Saturday, April 9, 2011 at 3:31pm