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September 19, 2014

September 19, 2014

Post a New Question | Current Questions

**math 6th grade**

what does y=x
*Tuesday, December 4, 2012 at 11:51pm*

**Math 5th grade **

9K=414
*Tuesday, December 4, 2012 at 7:14pm*

**math**

Suppose that you are taking a course that has three exams which count for three-fifths of your grade and a final which counts for two-fifths of your grade. On your first three tests your scores on were 75, 80, and 74. To get an B in the course, you must have an average of at ...
*Sunday, December 2, 2012 at 2:11pm*

**5th grade math**

i need help
*Tuesday, November 27, 2012 at 5:48pm*

**calculus**

A multistoried building has a floor area of 2,000 square feet on the ground floor, 1,995 square feet on the 1st floor, 1,990 square feet on the 2nd floor, and so on. If the areas of the higher floors follow this sequence, what is the expression to calculate the area of the nth...
*Tuesday, November 27, 2012 at 11:14am*

**chemistry**

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=4.091 A˚. What is the maximum wavelength (in meters) of radiation capable of...
*Sunday, November 18, 2012 at 10:54am*

**chemistry**

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=2.091 A˚. What is the maximum wavelength (in meters) of radiation capable of...
*Sunday, November 18, 2012 at 6:33am*

**chimistry**

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.591 A˚. What is the maximum wavelength (in meters) of radiation capable of...
*Sunday, November 18, 2012 at 2:23am*

**chemistry**

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=5.091 A˚. What is the maximum wavelength (in meters) of radiation capable of...
*Saturday, November 17, 2012 at 11:54am*

**chemistry**

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=5.591 A˚. What is the maximum wavelength (in meters) of radiation capable of...
*Saturday, November 17, 2012 at 8:29am*

**science**

Sulfur vapor is analyzed by photoelectron spectroscopy (PES). Measurements determine that photoelectrons associated with the 1st ionization energy of sulfur move with de Broglie wavelength λ=3.591 A˚. What is the maximum wavelength (in meters) of radiation capable of...
*Saturday, November 17, 2012 at 7:24am*

**5th grade math word problems**

Frank saved 50% by purchasing his airline ticket early. His wife paid full price. If their total was $294 how much was Franks's ticket only? Can someone please explain this to me in 5th grade terms.
*Wednesday, October 24, 2012 at 2:40pm*

**Math Statistics**

The table below shows Rico’s grades during the third term in four subjects. Subject Units Grade Math 1.5 98 Science 2 97 English 1.5 95 A.P. 1 99 What was Rico’s average grade in the four subjects?
*Friday, October 19, 2012 at 11:30pm*

**Statistic**

Number of Absences Final Grade 0 93 1 93 2 77 3 68 4 65 5 54 - Find the correlation coefficient for the data. I got this part of my answer. I believe the answer to be -0.9767 I am just going crazy with the second part. - Find the equation for the regression line for the data, ...
*Thursday, October 18, 2012 at 9:18pm*

**lens surface**

A spherical generator is used to produce a -15.00D surface on glass of refractive index 1.80. The diameter of the cutting tool is 80mm and the radius of the cutting surface is 4mm. What is the angle between the axis of the tool and the axis of the lens? Do I calculate the ...
*Thursday, October 18, 2012 at 10:26am*

**4 grade math**

what the rule for 58,-2
*Sunday, October 14, 2012 at 4:50pm*

**c++**

Your Mathematic school teacher want to use a program that can read the name and the mark of a student. Your teacher want the program to automatically find the grade of the mark and display the result(name, mark and grade). Help your teacher to develop a program that can solve ...
*Thursday, October 11, 2012 at 5:16am*

**7th Grade x y input output tables**

i need help with x and y input output tables for 7th grade i dont understand what 5x means or what to do! Math hw problems: 1. y=4x+3 x=1,2,5,10,20 2.d=3.5t t=1,2,5,10,20 Please help ASAP!!!!!
*Tuesday, October 9, 2012 at 7:14pm*

**statistics**

You are given the following data. Number of Absences Final Grade 0 95 1 91 2 82 3 69 4 67 5 58 - Find the correlation coefficient for the data. - Find the equation for the regression line for the data, and predict the final grade of a student who misses 3.5 days.
*Thursday, October 4, 2012 at 11:05am*

**7th grade math help quick**

11/12 + (-2/3) = ?
*Wednesday, October 3, 2012 at 8:42pm*

**math**

there are 15 boys and 18 girls in fifth grade. Find the ratio of boys to girls in fifth grade.(how do I get the answer) can someone show me how to work the problem
*Monday, October 1, 2012 at 8:52pm*

**MATH**

tHERE ARE 4 FIFTH GRADE CLASSES IN A SCHOOL. EACH CLASS Has 24 STUDENTS. fOR EACH GYM PERIOD, TWO FIFTH GRADE CLASSES TAKE GYM TOGETHER. tHERE ARE 10 GYM PERIODS IN ALL DURING SCHOOL WEEK. wHAT INFORMATION IS NOR NEEDED TO FIGURE OUT HOW MANY TOTAL STUDENTS TAKE A GYM PERIOD ...
*Monday, October 1, 2012 at 8:01pm*

**biology**

what statement describes the 1st step of ecological community it is known as? A. reed plants attract dragonflies and mayflies. B. frogs and snakes arive after emergent plants are established. C.climax trees such as ash and beech appear and eventually dominate the area. D. ...
*Monday, October 1, 2012 at 7:22pm*

**2nd grade math**

____= 8+2?
*Wednesday, September 26, 2012 at 3:01pm*

**math**

5th grade equstions
*Tuesday, September 25, 2012 at 9:04pm*

**6th grade math **

what does the |#| mean? Thanks
*Sunday, September 23, 2012 at 10:29pm*

**6th grade math**

Simplify: |15|
*Sunday, September 23, 2012 at 10:23pm*

**6th grade math**

Yes I am not smarter than a 6th grader. How do I show the math and in the simplest form for the following: A sixth grade class has 100 sheets of lightweight paper. They use 3/4 of the paper for a collection of class poems. What is the total thickness of the paper they use?
*Monday, September 17, 2012 at 7:27pm*

**7th grade math**

What is the difference? |-9| - |13| =? A)-22 B)-4 C)4 D)22
*Sunday, September 16, 2012 at 4:49pm*

**6th grade math **

9 + x = 17 I know that x=8 but how did you get it Thanks
*Friday, September 14, 2012 at 6:24pm*

**7th Grade Math**

(-13) + (-1)
*Friday, September 14, 2012 at 9:41am*

**math**

randall opened a savings account on June 1st and made the following deposits: $212.19, June 5th $23.03, June 12 $307.15, June 19th $652.00 and June 30, $78.75. Assuming he made no withdrawals, approximately how much did he have in the savings account at the end of the month of...
*Tuesday, September 11, 2012 at 8:28pm*

**6th grade math**

f + (–15) = –32
*Tuesday, September 11, 2012 at 12:06pm*

**math**

I'm in sixth grade What is the value of |–46| ?
*Monday, September 10, 2012 at 12:57pm*

**math**

y – (–19) = 25 i'm in sixth grade
*Monday, September 10, 2012 at 12:45pm*

**Math**

A year on Mars is 686 Earth Days. (1) Which is longer, a year on Mars or a year on Earth? (2)By how many weeks is it longer? Submit two answers. Please explain how you got the answers. My 1st answer was Mars the 2nd answer I 82 1/2 weeks. Please help
*Wednesday, September 5, 2012 at 10:59am*

**7th grade math**

-6(2r-4)
*Tuesday, September 4, 2012 at 7:01pm*

** 6th grade math**

what is 13/16 minus 1/4?
*Tuesday, September 4, 2012 at 5:57pm*

**9th grade chemistry**

what is the
*Monday, September 3, 2012 at 1:09pm*

**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 ...
*Thursday, August 30, 2012 at 2:11pm*

**Business**

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 85 on her quizzes and average of 92 on her exercises. The quizzes count for 40%, exercises count for 30% of the class grade. What is the minimal...
*Thursday, August 30, 2012 at 11:07am*

**Economics**

Brian is taking three courses this semester: economics, statistics, and finance. He has decided to spend 19 hours per week studying (in addition to attending all his classes) and his objective is to maximize his average grade, which means maximizing the total of his grades in ...
*Monday, August 27, 2012 at 3:29pm*

**9th grade algebra/Ms Sue**

Okay Ms. Sue. I am in 8th grade but I am taking Algebra with 9th graders. I am very confused with my previous problem. I have asked my Dad but we are both getting confused. Now I have come up with 22. Is this my correct answer?
*Wednesday, August 22, 2012 at 9:59pm*

**math**

My son is in Kindergarten and I have no idea about the "Counters" in the question: 1st) Cover the teddy bears in the top row with different-color teddy bear counters. 2nd) Color the teddy bears in the bottom row to show the colors." Help. Thanks You.
*Tuesday, August 14, 2012 at 8:37pm*

**CTU**

Part IV: You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9% interest that ...
*Monday, August 13, 2012 at 6:52pm*

**Physics**

Upon a flat only 10 m high (Is that possible?) there are two guns A and B attached together making a vertical angle of 60 degrees when A is flat on roof. They fire at the same time and has the same reloading time. Both guns are capable of giving an initial velocity of 5√...
*Friday, August 10, 2012 at 4:56am*

**biology**

Trophic Level Cylinder Volume of H2O Volume of Oil Total Volume % Oil 1st 1000 ml 1000 ml 2nd 100 ml 100 ml 3rd 10 ml 10 ml
*Thursday, August 9, 2012 at 9:37am*

**Reimbursement Methodologies Final Exam**

Can anyone please help me with Part A with the 1st question: You're the new director of a hospital health information management department. The chief financial officer has hired you for your experties in health care reimbursement and needs to know how your department can ...
*Friday, July 20, 2012 at 4:57pm*

**math**

not sure if this had to do with math but my professor gave us this last hw assignment that i don't understand at all. It has to do with the grade scaling he does. 4x Exams = 37450 HW = 9362 Final = 16385 Lab = 23407 Recitation = 7022 Total Points = 93626 He asks whats the ...
*Thursday, July 5, 2012 at 8:35pm*

**payroll**

An employee's rate of pay is $40.00 per hour, with time and a half for all hours worked in excess of 40 during a week. The following data are available: Allowances claimed on W-4 4 Allowance amount allowed:$70 ea. Hours worked this week 50 Y T D Earnings prior 105,200 F I ...
*Sunday, July 1, 2012 at 8:27pm*

**Foreign languages**

Writeacher, can you please check these sentences? Thank you. 1 Talk about the place where you live using the following grid: . – What is your town like – How long have you lived there – if you like it or not and why – If you don’t like it where you ...
*Thursday, June 21, 2012 at 5:38pm*

**Art**

Who is the artist of the Ngady Mwaash Mask (search on yah oo, then click images, it should be the 4th one) and the artist of the Sowo Mask, (same thing, go to yah oo search the name then click images, and it should be the 1st one)
*Sunday, June 17, 2012 at 2:15pm*

**Algebra**

The final grade for a particular course is calculated by dividing total points earned by total points available. There are 120 points available in the first half of the course, and 140 points in the second half of the course. If a student earns 81% in the first half of the ...
*Monday, May 28, 2012 at 12:46pm*

**11th grade math**

-2x+7+9x-4
*Thursday, May 24, 2012 at 10:51am*

**8 grade**

27.6 x 5.2 my answer is 138.00 is this right
*Monday, May 21, 2012 at 5:54pm*

**Calculus**

A Baseball Diamond has the shape of a square with sides 90 feet long. a player is running from 1st to 2nd base at a speed of 25 feet per second. find the rate at which his distance s is from home plate is changing when the player is 20 feet from 2nd base.
*Sunday, May 20, 2012 at 1:42pm*

**6 grade math**

Can you help me with this integer problem? -8+6+(-10)+(-2)*(-10) is it 8????
*Tuesday, May 15, 2012 at 6:17pm*

**Math**

first three terms of a geometric sequence are the same as the 1st, 9th and 11th terms of an arithmetic sequence, respectively. What is the common ratio in the geometric sequence ? Thanks!
*Saturday, May 12, 2012 at 9:41pm*

**2nd grade math**

4/6 of 18 is?
*Monday, April 30, 2012 at 5:23pm*

**statistics**

assume adults have an IQ score that are normally distrubted with a mean of 105 and standard deviation of 20 A) find the percentage of adults that have an IQ between 94 and 116 B) find the percentage of adults IQ exceeding 120 C)Determine the 1st, 2nd, and 3rd quartiles for ...
*Friday, April 27, 2012 at 5:04pm*

**Math**

After a Math test, each of the twenty-five students in the class got a peek at the teacher's grade sheet. Each student noticed five A's. No student saw all the grades and no student saw his or her own grade. What is the minimum number of students who scored A on the ...
*Thursday, April 26, 2012 at 5:24pm*

**to ms.sue**

thank you. how do you know im in 4th grade?
*Tuesday, April 17, 2012 at 6:07pm*

**reading**

the purpose of the 1st paragraph is to introduce the topic of seals washing ashore in large numbers this year that's what i put, give details about how animals are treated at the center, come to conclusion about why so many seals have washed ashore this year or explain the...
*Sunday, April 15, 2012 at 2:36pm*

**Chemistry**

Draw a reaction profile (diagram of energy vs reaction coordinate) for a hypothetical reaction AB +C <=> A+BC in which the foward reaction has an activation energy of 100kJ mol-1 and the backward reaction has an activation energy of 75kJ mol-1. (ii). a catalyst ...
*Saturday, April 14, 2012 at 6:40pm*

**Chemistry lab**

1) Using the 1st equivalence point from part a calculate the molarity of the phosphoric acid. Molarity of NaOH = .1523 M Volume of phosphoric acid used 10.0mL Volume at equivalence point 7.410 mL and 14.861 mL 2) Using the 2nd equivalence point from part a, calculate the ...
*Wednesday, April 11, 2012 at 11:16am*

**Social Studies 7R - Bill of Rights Project**

I have a project for social studies that is due when we come back from break (4/16/12). Choose one of the projects listed below to show your understanding of one or more of the following Amendments 1, 2, 3, 4, 5, 6, 7, and 8 to the Constitution: I choose one and I can easily ...
*Monday, April 9, 2012 at 2:59pm*

**Chemistry**

A solution contains 0.0500 M Ca2 (aq) and 0.0350 M Ag (aq). What will be the concentration of Ca2 (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca2 (aq) can be separated from the Ag (aq) by selective precipitation? -Solving the 1st one I got [Ca2+]= 5.03x10...
*Friday, April 6, 2012 at 4:36pm*

**Math**

Of the 300 tickets 240 were sold to sixth grade studentss What percent of the total number of tickets sold were sold sixth grade students
*Saturday, March 31, 2012 at 10:51pm*

**6th grade math**

35/(2+5)(2^3)-15
*Wednesday, March 28, 2012 at 9:49pm*

**Math 141**

You find that a small business loan in the amount of 50,000 is the amount you need to purchase the restaurant location. After researching banks to find the best interest rate, you find that banks for small businesses offer the best interest rate of 9% interest that compounds ...
*Tuesday, March 27, 2012 at 10:22am*

**statistics**

Calculate the z-score for each set of data. Determine who did better on her respective test, Tonya or Lisa. Student English Test Grade z-Score Student Math Test Grade z-Score John 82 Jim 81 Julie 88 Jordan 85 Samuel 90 Saye 79 Tonya 86 Lisa 82 Mean 86.50 81.75 St. Dev. 3.42 2...
*Thursday, March 22, 2012 at 3:03pm*

**Physics**

Belinda needs to find the center of mass of a sculpture she has made so that it will hang in a gallery correctly. The sculpture is all in one plane and consists of various shaped uniform objects with masses and sizes as shown. The length of the rectangle is L = 1.4 m and the ...
*Sunday, March 18, 2012 at 4:34am*

**4th grade math**

what is 5/6 of 288
*Monday, March 12, 2012 at 3:20pm*

**4th grade math**

what is 5/6 of 288
*Monday, March 12, 2012 at 2:50pm*

**Chemistry**

h2c4h4o4 + 2naoh --> 2h2o + na2c4h4o4 as for the previous question im sorry i forgot to plug the maleic acid in the formula properly. so this ones it ^ .2213 of c4h4o4 used (maleic acid) and .1 M NaOH 1. show the equation for 1st and 2nd ionization 2. find molecular mass of...
*Monday, March 12, 2012 at 1:59am*

**Math - HELP !**

there are 50 students in the seventh grade , 62 percent of these students are involved in the drama club.how many seventh grade students are in the drama club ?
*Saturday, March 10, 2012 at 11:15pm*

**Math**

The height of a ball t seconds after it is thrown upward from a height of 6 feet and with an initial velocity of 80 feet per second is f (t) = -16t^2 + 80t + 6. According to Rolle's Theorem, what must be the velocity at some time in the interval (2, 3)? ft/sec? & Find that...
*Thursday, March 8, 2012 at 3:21pm*

**Math**

The height of a ball t seconds after it is thrown upward from a height of 6 feet and with an initial velocity of 80 feet per second is f (t) = -16t^2 + 80t + 6. According to Rolle's Theorem, what must be the velocity at some time in the interval (2, 3)? ft/sec? & Find that...
*Wednesday, March 7, 2012 at 2:16am*

**math 2nd grade**

what is 3/5 of 10? what is 1/3 of 12?
*Monday, March 5, 2012 at 10:58pm*

**6th Grade History**

What is the crucifixion?
*Monday, March 5, 2012 at 3:46pm*

**Math for the middle school and elementary teacher**

A prof. teaches 2 calc. classes. The first class has 25 students and their mean on the 1st test was an 82. The 2nd class has 15 students and their mean on the same test was a 74. What is the mean on this test if the prof. combines the score for both classes? Is the answer the ...
*Tuesday, February 28, 2012 at 8:55pm*

**4th grade**

8+4
*Tuesday, February 28, 2012 at 9:20am*

**statistics**

12. A statistics student received a grade of 85 on a statistics midterm. If the corresponding z score equaled +1.50, and the standard deviation equaled 7, what was the average grade on this exam? a. 95.5 b. 74.5 c. 78.0 d. Cannot determine without knowing how many took the ...
*Sunday, February 26, 2012 at 3:08pm*

**Math**

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. What is the probability that you choose at least 1 of the Time magazines?
*Wednesday, February 22, 2012 at 12:32pm*

**stats**

The sponosor of a local soccer tournament is responsible for writting an article for the local paper announcing the 1st, 2nd, 3rd place winners.If 10 teamsare invited to the tournament, ans th sponsor wanted to get the article written in adance so it can go out in the next ...
*Monday, February 20, 2012 at 9:42pm*

**math finite**

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2 issues of Newsweek and 2...
*Monday, February 20, 2012 at 8:30pm*

**math - probability**

Assume that there are 7 different issues of Newsweek, 8 different issues of Time, and 4 different issues of Sports Illustrated, including the December 1st issue, on the rack. You choose 4 of them at random. (1) What is the probability that you choose 2 issues of Newsweek and 2...
*Monday, February 20, 2012 at 5:33pm*

**statistics**

2. The grades on a statistics midterm exam were normally distributed with a mean of 72 and a standard deviation of 8. a. What is the proportion of students received a B grade. b. What is the proportion of students that failed the exam? c. What is the grade of the 92nd ...
*Thursday, February 16, 2012 at 6:49am*

**math**

In the following problems, Θ = 20 + units digit of your day of birth. For example, if you were born on April 1st, then Θ = 20 + 1 = 21. If you were born on March 30th, then Θ = 20 + 0 = 20. You can solve any three of the seven given problems. 1. Alok and Bhanu ...
*Wednesday, February 15, 2012 at 9:35am*

**Calculas**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be...
*Tuesday, February 14, 2012 at 11:56pm*

**MATH**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be...
*Tuesday, February 14, 2012 at 10:58pm*

**Math please help**

Find an equation of the line that is tangent to the graph of f and parallel to the given line. Function Line f(x) = 2x^2 6x – y + 4 = 0 I know i have to find derivative 1st which will be f'(x)=4x but then how to i find equation do i plug 6 in for x so 4(6) would it be...
*Tuesday, February 14, 2012 at 10:33pm*

**Great News!!! :) (for teachers!!!) **

GOT A 102 ON FACS SPELLING TEST GOT 100 ON FACS TEST GOT A 94 ON MATH TEST GOT 80 ON MATH NTBK QUIZ GOT 100 ON ENG POSTER GOT 87 ON SCI HW GOT A CHECK ON SCI HW/CW GOT A 93 AEVRAGE FOR SS GOT A 87 AVERAHE FOR SCI (for the 2nd quarter 1st quarter i got a 80 so i done some rlly ...
*Monday, February 13, 2012 at 7:53pm*

**algebra**

sorry here it is... The 1st part of the trip the canoeist travels 60 miles at a certain speed. On the second part, he travels 18 mi at 5 mi slower. The total time is 3 hours. What was the speed on both parts of the trip??
*Saturday, February 11, 2012 at 11:58am*

**math for elementry school teacher**

Step 1st: 1 Box Step 2nd: 3 Boxes Step 3rd: 6 Boxes How many boxes in the 354th version? How many in the nth version?
*Sunday, February 5, 2012 at 7:18pm*

**maths**

Given the G.P 05,0.005,0.0005.find the 7th term, find the sum of the 1st 7th term
*Wednesday, January 25, 2012 at 9:12am*

**6th grade math**

how to solve w/3=17
*Sunday, January 22, 2012 at 9:30pm*

**6th grade math**

1/4 * 1/2 =4D
*Monday, January 16, 2012 at 6:46pm*

** 5 th grade algebra**

5a-a-2a=18
*Saturday, January 14, 2012 at 10:17pm*

**Question **

I'M CURIOS SO DON'T JUST JUDGE ME AND BE RUDE i'M REALLY CURIOUS AND i FORGOT TO ASKED THIS QUESTION. DO NOT JUDGE ME!!!! Do I start taking SAT's and ACT's in grade 10th or 11th/12th grade???? I'm really curious.
*Friday, December 30, 2011 at 12:29pm*

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