Saturday

April 30, 2016
**DYNAMICS**

A particle travels along a straight line with a velocity v=(12-3t^2) m/s, when t is in seconds. When t=1s, the particle is located 10m to the left of the origin. Determine the accelaration when t=4s, the displacement from t=0 to t=10s, and the distance the particle travels ...
*Sunday, February 17, 2013 by HELP*

**physics**

a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity.
*Wednesday, February 13, 2013 by Fatima*

**physics**

a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity.
*Wednesday, February 13, 2013 by Fatima*

**physics**

a body moves in a straight line with initial velocity and uniform acceleration.find how far it travels in12s,given that it travel 246m in the 1st 6seconds,and 69m in the last 3seconds.find also the initial velocity.
*Wednesday, February 13, 2013 by Fatima*

**6 grade math**

(100-7•2+3)÷10 =
*Tuesday, February 12, 2013 by noahc*

**math 4th grade **

my mistake will it be 8
*Tuesday, February 12, 2013 by Lourane*

**math 4th grade **

now is the correct answer 4
*Tuesday, February 12, 2013 by Lourane*

**math 4th grade **

So Alyonka will the correct answer be 10
*Tuesday, February 12, 2013 by Lourane*

**statistics**

this is a problem in my statistics class, and I am lost to me, it is confusing or missing something here is the problem please help grade points are assignede as follows: a=4,b=3,c=2,d=1,f=0. grades are weighted according to credit hours. if a student receives an A in a four-...
*Sunday, February 10, 2013 by Cyn*

**Math**

Instructions Suppose we have a sequence (1), (2, 3), (4, 5, 6). (7, 8, 9, 10), (11, 12, 13, 14, 15), ... where (1) is the first element of the sequence, (2, 3) is the second, etc. What is the first number in the 100th element of the sequence? Be sure to do more than answer the...
*Saturday, February 9, 2013 by Stinkrat*

**math**

Jon and Anne had an equal aount of money. Jon spent $10. Anne spent $30. Now Jon has 2x as much as Anne. How did they each have at 1st?
*Thursday, February 7, 2013 by Anonymous*

**Math**

''Dan saved $463 over the 12 weeks of summer break He saved$297 of it during the last 4 weeks. How much did he save during the 1st 8 weeks.'' I have to draw a picture,write an equation,and write a variable.I don't know how to draw the picture or do the ...
*Thursday, February 7, 2013 by Kiley*

**Accounting**

The business was started on April 1st. I have the following events that happened: what accounts should I debit and credit? 1. Incurred advertising expense of $1,907 on account. 2. Hired park manager at a salary of $3,783 per month, effective May 1. 3. Sold 140 coupon books for...
*Wednesday, February 6, 2013 by Jacob*

**Maths**

Thato caught 4 snails and placed them all in the same small circle on the ground and organised a race......1st snail travelled 24cm in 4minutes,2nd snail travelled 35 cm in 7minutes,3rd snail travelled 33cm in 5minutes and the 4th snail travelled 39cm in 6minutes..... (1)how ...
*Wednesday, February 6, 2013 by Lucas*

**Accounting**

The business was started on April 1st. I have the following events that happened: what accounts should I debit and credit? 1. Incurred advertising expense of $1,907 on account. 2. Hired park manager at a salary of $3,783 per month, effective May 1. 3. Sold 140 coupon books for...
*Tuesday, February 5, 2013 by Jacob*

**Math-grade 4**

what is the estimated quotient of 6 divided into 75?
*Monday, February 4, 2013 by Chloe*

**Math**

There are 12 girls on a gymnastics team. Less than 1/4 of the girls are in second grade. How many girls on the gymnastics team could be in second grade?
*Monday, January 28, 2013 by Ms. Ramos*

**6th grade math**

5ft 3 in. – 2ft 9 in. = ??
*Sunday, January 27, 2013 by Kat*

**6th grade health**

the view you have of yourself is known as your
*Sunday, January 27, 2013 by Eduarda cardoso*

**6 grade Math**

How do I divide this ... 3 divided by 1/2
*Wednesday, January 23, 2013 by Nate*

**Chemistry**

This problem is 1st order for half life. How long would it take for the concentration of cyclopropane to decrease to 50% of its initial value? to 25% of its initial value? Rate constant is 9.2/s I set up like this... t1/2= 0.693/9.2/s= 0.075s at 50% I can't figure out how ...
*Monday, January 21, 2013 by Chris*

**Chemistry**

What would be the concentration of dinitrogen pentoxide after 6.00 X 10(2) seconds and how long would it take for the concentration of N2O2 to decrease to 10.0% of its initial value in the following equation... N2O5 to NO2 and O2 initial concentration is 1.65 X 10-2mol/L rate ...
*Sunday, January 20, 2013 by Chris*

**4th grade math**

How do you solve 41/2-1/4=?
*Sunday, January 20, 2013 by beka*

**3rd grade math**

Draw a model to show 84/12=7
*Wednesday, January 16, 2013 by johnathan*

**9TH GRADE MATH**

IF C=2M+D THEN M=
*Tuesday, January 15, 2013 by KIM*

**math**

what is tell me rule it frist grade help please......
*Tuesday, January 15, 2013 by janiah*

**math 7 th grade asap **

6(b-4)=
*Monday, January 14, 2013 by noahc*

**9th grade algebra**

2x^2+5x+2
*Thursday, January 10, 2013 by Nicole*

**math**

whats 4(2/3) im in 8th grade and i dont understand
*Tuesday, January 8, 2013 by diana martinez*

**statistics-?mean average with lowest number out?**

A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
*Monday, January 7, 2013 by tony*

**statistics-?mean average with lowest number out?**

A mean average of 60 on 7 exams is needed to pass a course. on his first 6 exams, Adam received grades of 46,74,70,59,66 and 72. if his lowest grade of the exams already taken is to be dropped,what grade must he receive on his last exam to pass?
*Monday, January 7, 2013 by tony*

**Can someone help me?!**

The 1st, 5th and 13th terms of an arithmetic sequence are the first three terms of a geometric sequence with a common ratio 2. If the 21st term of the arithmetic sequence is 72, calculate the sum of the first 10 terms of the geometric sequence.
*Thursday, January 3, 2013 by Jm*

**math**

The question is a principal is choosing between field trips. The final cost is $600. The second costs $240 plus $40 per student. For what number of students is the first trip less expensive. I got the 1st trip would be less expensive with more than 9 students. Is this correct...
*Sunday, December 30, 2012 by B6*

**World history- does this sound okay?**

if you had to give queen Elizabeth the first a grade on the enlightenment principles what grade would you give and why? I think I would give her a B bc for the most part she was a very big influence on the enlightenment era and she enabled quite a bit for us today. she changed...
*Thursday, December 20, 2012 by BaileyBubble*

**physics**

2 runners accelerate from rest to their top speeds. The 1st runner pat has an acceleration of 5.9 m/s^2 and reaches her top speed in 4 sec. The second runner steven accelerates at 4.4m/s^2 and takes 6.5 sec to reach his top speed the 2 runners run flat out for the remainder of...
*Thursday, December 20, 2012 by ty*

**ECC**

When do parents start to socialize their children in earnest? 1) The 1st year when babies can interact socially. 2) The 2nd year when toddlers are first able to comply with parental directions. 3) The preschool years when children start formal schooling. 4) Early adolescence ...
*Wednesday, December 19, 2012 by Denice*

**3rd grade math **

25 cents __?__ 3/10 of a dollar
*Monday, December 17, 2012 by Kk*

**7 th grade math**

How many 4/5 are in 1 ?
*Wednesday, December 12, 2012 by noah*

**Math challenge **

There are 3 circles divided into thirds with a number in each third. The 1st cirlcle has 18, 23 & 49. 2nd cirlce has 25, 62, 38. The 3rd cirlce has ?, 17 & 39. We need to figure out what number is missing from the 3rd circle, and how you figured it out.
*Thursday, December 6, 2012 by Gabby*

**Math**

Elsa had a rubber disc that was red on one side and blue on the other. She tossed this disc 3 times. Draw a diagram showing all the possible outcomes she could get in 3 tosses of the same rubber disc 1st toss can be red or blue 2nd toss can be red or blue and 3rd toss can be ...
*Thursday, December 6, 2012 by Jerald*

**Math**

Please help! How do I find the mean weight of 2 groups of 100 kids... 1st grp mean weight is 55.7lbs and 2nd grp mean weight is 42.6lbs.
*Wednesday, December 5, 2012 by Damon*

**5th grade math**

what is a word problem for 4.23x10
*Wednesday, December 5, 2012 by kaitlyn*

**math 6th grade**

what does y=x
*Tuesday, December 4, 2012 by sally*

**Math 5th grade **

9K=414
*Tuesday, December 4, 2012 by Ishu*

**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 by amanda*

**Algebra Grade 7 (Rotation)**

If you rotate a clock clockwise 90° from 3:00, what will it be?
*Thursday, November 29, 2012 by rawr... im a dinosaur.... rawr*

**5th grade math**

i need help
*Tuesday, November 27, 2012 by jacob*

**MATH 5TH GRADE**

HOW MANY TIMES MORE IS 2000 THAN 20?
*Tuesday, November 27, 2012 by frank*

**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 by Chelsy*

**Spelling 4th grade**

Down is to dive as up is to ____________?
*Monday, November 26, 2012 by Caleb*

**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 by Anonymouse*

**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 by selly*

**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 by School girl*

**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 by amar chauhan*

**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 by amar chauhan*

**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 by hi*

**6th grade math**

What does this sign mean "| |"
*Monday, November 5, 2012 by luv history*

**6th grade math**

What does this sign mean "| |"
*Monday, November 5, 2012 by luv history*

**Geo- 7th Grade**

What are the Atlantic Provinces?
*Friday, November 2, 2012 by rawr... im a dinosaur.... rawr *

**English**

1. At Thanksgiving Americans eat a roast turkey. 2. On Thanksgiving Americans eat a roast turkey. (Which preposition, do we have to use 'at' or 'on' before 'Thanksgiving'? Are both OK?) 3. on/at the weekend 4. on/at Sunday 5. on/at New Year's Day 6...
*Wednesday, October 31, 2012 by rfvv*

**Algebra Grade 7**

Point S is the midpoint of RT. compplete the statement: ST = 11 in., RT = __
*Saturday, October 27, 2012 by rawr... im a dinosaur.... rawr *

**math**

how to solve identity property,2nd grade
*Wednesday, October 24, 2012 by tyler*

**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 by Milen*

**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 by Ashley S*

**math 7th grade**

what is 234(2-1+1092-924+18) ?
*Thursday, October 18, 2012 by allie*

**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 by kelly*

**4 grade math**

what the rule for 58,-2
*Sunday, October 14, 2012 by Monta*

**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 by sarah*

**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 by Sadie*

**Math 4th grade**

How do you find the properties of addition?
*Tuesday, October 9, 2012 by Penny*

**ELEMENTARY**

How to prepare PSAT test from 3rd grade
*Monday, October 8, 2012 by josh*

**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 by mom*

**7th grade math help quick**

11/12 + (-2/3) = ?
*Wednesday, October 3, 2012 by Delilah*

**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 by lhyza*

**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 by tameka*

**2nd grade math**

____= 8+2?
*Wednesday, September 26, 2012 by todd*

**math**

5th grade equstions
*Tuesday, September 25, 2012 by erickka*

**6th grade math **

what does the |#| mean? Thanks
*Sunday, September 23, 2012 by luv history*

**6th grade math**

Simplify: |15|
*Sunday, September 23, 2012 by need help*

**6th grade math **

What is absolute value?
*Sunday, September 23, 2012 by luv history*

**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 by dad pulling out his hair*

**6th grade science**

What is porosity and permeability? Thanks
*Sunday, September 16, 2012 by Allison*

**6th grade science **

What is a A topographic map used for? thanks
*Sunday, September 16, 2012 by Allison*

**7th grade math**

What is the difference? |-9| - |13| =? A)-22 B)-4 C)4 D)22
*Sunday, September 16, 2012 by Lauren*

**6th grade math **

9 + x = 17 I know that x=8 but how did you get it Thanks
*Friday, September 14, 2012 by some girl*

**6th grade math **

What is base measurement? thanks
*Friday, September 14, 2012 by some girl*

**7th Grade Math**

(-13) + (-1)
*Friday, September 14, 2012 by Lauren*

**writing**

who knows any 5th grade transition words?
*Wednesday, September 12, 2012 by jessica*

**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 by Melinda*

**6th grade math**

f + (–15) = –32
*Tuesday, September 11, 2012 by Allison *

**math**

I'm in sixth grade What is the value of |–46| ?
*Monday, September 10, 2012 by Allison *

**math**

y – (–19) = 25 i'm in sixth grade
*Monday, September 10, 2012 by Elizabeth *

**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 by Nakia*

**5th grade math**

Which is more 0.33 or 0.333?
*Tuesday, September 4, 2012 by Colby*

**7th grade math**

-6(2r-4)
*Tuesday, September 4, 2012 by nic*

** 6th grade math**

what is 13/16 minus 1/4?
*Tuesday, September 4, 2012 by Al*

**9th grade chemistry**

what is the
*Monday, September 3, 2012 by simia *

**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 by John*

**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 by John*

**english 3 grade**

aphabet on move words
*Wednesday, August 29, 2012 by edwin*