Questions Asked on
April 9, 2007

  1. sum geometric series

    what is the sum of geometric infinite series 3/2+ 9/16+ 27/128+ 81/1024=.... i know the formula is S=a/(1-r) my teacher, he usually transforms into a formula of the sum series and finds out a and r.but i don't how to do that. the pattern i saw is 3/2 +

    asked by david
  2. chem

    Consider the decomposition of ammonium hydrogen sulfide: NH4Hs(s) NH3(g) + H2S(g) In a sealed flask at 25*C are 10.0 g NH4HS, ammonia with a partial pressure of .692 atm, and H2S with a partial pressure of .0532 atm. When equilibrium is established, it is

    asked by Chris
  3. Physics please check

    The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. What is the volume of gold in a 20.0 karat gold

    asked by Mary
  4. math (statistics)

    There are 15 qualified applicants for 5 trainee positions in a fast-food program. How many groups of trainees can be selected? I have a feeling that the answer is 75 but I'm not too sure. Any help is appreciated. Thank you! The first trainee can be any one

    asked by vivian
  5. math

    A softball diamond is a square with sides of 60 feet long. How far is home plate to second base? Round to the nearest tenth if necessary. 60 Home plate, first base, and second base form a right-angled triangle, with home plate to second as the hypotenuse.

    asked by ana
  6. Physics

    A 0.150kg baseball is thrown upwards with an initial speed of 20.0 m/s. What is the force on the ball when it reaches half its maximum height? (Disregard air resistance.) What is the force on the ball when it reaches its peak? The force on the ball is

    asked by Danielle
  7. history

    who were the Cherokee mound builders? These mound builders lived long before the Cherokees existed. http://en.wikipedia.org/wiki/Mound_Builders http://www.mississippian-artifacts.com/ Thank you for using the Jiskha Homework Help Forum. Since you

    asked by Daniel
  8. Physics please check

    As you climb a mountain, your ears "pop" because of the changes in (a) In which direction does your eardrum move as you climb up? inward outward eardrum does not move Give your reasoning. I think the eardrum moves outward because the further you go away

    asked by Mary
  9. Chem

    I was given a problem that my book did not explain how to do, so I attempted to figure it out myself. Let me know if my conclusion is fallacious. Given the reactions H2O(g) + CO(g) H2(g) + CO2(g), K= 1.6 FeO(s) + CO(g) Fe(s) + CO2(g), K= .67 Find K for the

    asked by Chris
  10. Physics HELP!!!!!!!!

    A bottle of juice is sealed under partial vacuum, with a lid on which a red dot or "button" is painted. Around the button the following phrase is printed: "Button pops up when seal is broken." Explain why the button remains pushed in when the seal is

    asked by Mary
  11. Social studies

    an early board game in which players moved their counter around the squares?????? Thank you for using the Jiskha Homework Help Forum. Have you investigated the Egyptian sites Bob Pursley gave you this morning? I listed them for someone else on that site.

    asked by kelsey
  12. Elem. Ed.

    The term "curriculum" can mean an academic area of study or: 1. a federal guideline 2. a holistic subject 3. the total program 4. a separate model Can't "curriculum" mean the total program? Generally, it means an integrated program of study. That can be

    asked by Keisha
  13. Physics repost please check

    A glass bottle of soda is sealed with a screw cap. The absolute pressure of the carbon dioxide inside the bottle is 1.80 x10^5pa. Assuming that the top and bottom surfaces of the cap each have an area of .0004M^2, obtain the magnitude of the force that the

    asked by CJ
  14. Physics, still don't get it!

    The "karat" is a dimensionless unit that is used to indicate the proportion of gold in a gold-containing alloy. An alloy that is one karat gold contains a weight of pure gold that is one part in twenty-four. What is the volume of gold in a 20.0 karat gold

    asked by Mary
  15. Math

    A restaurant manager bought 20 packages of bagels. Some packages contained 6 bagels each, and the rest contained 12 bagels each. There were 168 bagels in all. How many packages of 12 bagels did the manager buy? A 6 B 8 C 9 D 12 D 12

    asked by Ron
  16. Geography/Science

    Science is the literature of truth? in other words, Science is knowledge socially produced... I need some opinions, do you agree or disagree, why? I choose disagree because even science has and will sometimes come to wrong conclusions. Thank you for using

    asked by Oz
  17. tax

    Can someone please check my answer for the following problem. The Smiths wish to refinance their home worth $250,000. They originally paid $130,000 for the home and made $25,000 in improvements. The bank is willing to let the Smith refinance $200,000 with

    asked by help
  18. Math

    I don't want the answer I want to know how you solve the problem! A restaurant manager bought 20 packages of bagels. Some packages contained 6 bagels each, and the rest contained 12 bagels each. There were 168 bagels in all. How many packages of 12 bagels

    asked by Ron
  19. English essay

    I have to write an essay on " Human beings have unlimited desires but limited resources.Is it possible to reconcile the two?" Can you help me plz. I have no idea what to write in the intro. Thx :-) Your title reminds me of the Band leader in the production

    asked by Shym
  20. scocial studies

    What substance was used to stuff the nostrils of a mummy? http://www.jiskha.com/display.cgi?id=1170947850 substance used to stuff nostrils of mummies

    asked by kelsey
  21. Safety

    Who is the father of occupational medicine in the U.S? Do other countries have individuals who played a significant role in starting safety prgrams in their countries? NEED REFERENCES Thanks! Thank you for using the Jiskha Homework Help Forum. Happily I

    asked by Ashley
  22. c programming

    how would you write a program that translates an alphabetic phone number into numeric form enter phone number: CALLATT 2255288 I was given a website for help. However, it didn't help. I would use a table lookup, for speed, do a binary search of the

    asked by NICOLE
  23. Algebra

    I need a step by step explanation of finding the GCF of (6ysquare -3y)(y+7) The greatest common factor, or GCF, is the greatest factor that divides two numbers. ... If there are no common factors, the GCF is 1. That is the situation on your case. 6y^2 -3y

    asked by Tony
  24. tax problem

    Can someone please help me with the following question. I really don't know where to start. -In 2006, Jack and Jill Money had AGI of $275,750 and taxable income of $175,000. They have three children, all of whom qualify for the dependency exemption. They

    asked by undecided
  25. Mathematics/pre-algerbra

    how do I find a value of x that will make each proportion true?? 12 = x ___ ___ 16 20 and 8 = 14 __ ___ 12 x See previous post. i still don't get it sorry Cross multiply to find x. Here's the first one; perhaps you can try the second one on your own. 12/16

    asked by Joe
  26. ALGEBRA

    THE AEA OF A RECTANGLE OF LEGNTH X IS GIVEN BY 3X SQUARE +5X. fIND THE WIDTH OF THE RECTANGLE. The width is the area divided by the length, or in this case (3x^2 +5x)/x = 3x +5

    asked by Tony
  27. spanish

    can anyone help me with my homework im a senior in high school and this seriously deturmines my graduation and i need help!!!!!!! please! Thank you for using the Jiskha Homework Help Forum. We will be very glad to help you, however you need to post what is

    asked by kori
  28. social studies

    which pharaoh believed in only one god?????? Check this site. http://www.heptune.com/Akhnaten.html

    asked by kelsey
  29. fun

    how much wood could a wood chuck chuck if a wood chuck could chuck wood?:) Thank you for using the Jiskha Homework Help forum. A woodchuck is a groundhog. The word itself is of Algonquian origin for this marmot. Since "chuck" means "discard" I doubt a

    asked by lainey cox
  30. science

    if a egyptian mummy has 61% carbon-14 how long ago was it buried? Take a 100 g initial sample. Now there are 61 g C-14. Use ln(No/N) = kt where No = 100 N = 61 You will need k and you may obtain that from k = 0.693/t1/2. Look up t1/2 and substitute in that

    asked by courtney
  31. Biology (( Plants ))

    Hi I think how plants reproduce is a very complicated process and the structure of the plant ,, can anyone please give me a help and show me how plants reproduce cause my sats are coming and I'm in Grade 9 Thanks and I will be grateful to you You are

    asked by LOLO
  32. chemistry

    out of orthonitroaniline and paranitroaniline which one will go at the top of TLC plate and why It depends upon the stationary phase and the mobile phase, to some extent; however, o-nitroaniline is LESS polar than p-nitroaniline. A polar adsorbent will

    asked by pawam
  33. Safety

    I'm confused about who the father of occupational medicine is in the United States? Bernadino Ramazzini is the father of occupational medicine but what country is he for? if its for a diff. country then who is the father of occupational medicine in the

    asked by Ashley
  34. S.S Please Help!!!!!!!!!

    What was the Confederate Army Part of? Was It part of the British Army, The Northern Army or the Southern Army? HELP ME!!!! southern army The Confederate Army was part of the Southern States Confederacy.

    asked by Angelina 5 grade
  35. sociology

    The United Nations predicts that by 2025 wealthy societies will grow by 57 million people, while poor societies will grow by 1.7 billion people. What are the possible reasons for this growth pattern? What are the consequences of this growth pattern?

    asked by Anonymous
  36. Early Childhod Ed.

    where can I find a good wesite to help me with a lesson plan for kindergarteners on growing? Thank you for using the Jiskha Homework Help Forum. Hopefully at least one of the following sites will help you: 1. http://www.cloudnet.com/~edrbsass/edsci.htm 2.

    asked by Thalia
  37. math

    What does it mean to have the sqaure root of 5 with a 2 in front of it? How do you figure it out? 2 sqrt 5 is two times the square root of 5. It depends where the 2 is placed wrt the square root symbol. If it is on the same line as the square root symbol,

    asked by Cookie
  38. Religion

    What are the cultural and societal influences that have made Hinduism vital to the region in which it originated? I understand that you may not be able to answer this question....i just do not understand what the question is looking for. Hinduism is a

    asked by Rindi....HELP PLEASE!!!!!!!!!!
  39. Chemistry

    1.What is the mass of 2.0 moles of LiOH? Atomic mass Li + atomic mass O + atomic mass H = molar mass LiOH. grams in 2 mol = #mols x molar mass.

    asked by Claudia
  40. Financial Mathmatics

    what would be the rate of return on a security with standard deviation of 5% if the risk free rate of interest is 4% and the price of total risk is 0.5?

    asked by Benbee
  41. history

    why are the early groups of Native Americans called prehistoric? They are called prehistoric because the early groups of Native Americans didn't have a written language. History is written -- so anything that happens that is before the use of writing is

    asked by Daniel
  42. Elem. ED.

    Art and math are being integrated when students: 1. draw more than 1 picture on a page. 2. use rectangular paint pots. 3. identify geometric shapes when composing a picture. 4. insist on using the same materials as their peers. Is the 3rd answer correct?

    asked by Keisha
  43. Math Quant Needed!!!!

    What would be the rate of return on a security investment with a standard deviation of 5%,and the risk free rate of interest is 4%, with a price of total risk at 0.5? What is the formula for this?

    asked by Benbee
  44. math

    For a wedding, Shereda bought several dozen roses and several dozen carnations. The roses cost $15 per dozen, and the carnations cost $8 per dozen. Shereda bought a total of 17 dozen flowers and paid a total of $192. How many roses did she buy? A 6 dozen B

    asked by Ron
  45. Math

    The price of a brick today is 49cents. This is 3 cents less than 4 times the price 20 years ago. What was the price 20 years ago? Let that old price be x. 49 = 4x - 3 Solve for x.

    asked by monica
  46. history

    Im having trouble interpreting these two confucius sayings "There are seedlings that do not bear flowers. There are flowers that do not bear fruits." "The people may be made to follow, but may not be made to know" things may not do things the way it seems

    asked by blutberry
  47. art history

    in the painting "Adoration of the shepherds with st. catherine of alexandria," where is st. catherine and who is that baby? can you tell me who the characters are in the picture? The baby is Christ. The three gents up front are shepards. The glowing mom is

    asked by naila
  48. physics

    An astronaut is in space at the midpoint between two stars of equal mass. Everything else is infinetly far away. What is the weight of the astronaut? Explain your answer. The attraction to each of the stars is equal, but opposite direction. Weight is the

    asked by Amber
  49. Biology

    I have to draw a labelled diagram to show the chromatids of a diploid cell at the end of anaphase I of meiosis for a person who is heterozygous for both characters. (both characters being Huntingdon disease(H) on the short arm and red hair gene(R) on the

    asked by Hol
  50. Algebra, math

    how do I find a value of x that will make each proportion true?? 12 = x ___ ___ 16 20 and 8 = 14 __ ___ 12 x Cross multiply to find x. Here's the first one; perhaps you can try the second one on your own. 12/16 = x/20 16x = 240 Divide both sides by 16 to

    asked by Joe
  51. Math - algebraish

    hey how do we convert y=mx+b to standard form? the standard form of the equation of a straight line is usually considered to take this form Ax + By = C, where A,B, and C are integers and A is positive. So if your equation is in the slope-yintercept form

    asked by gorden
  52. Writing

    Can anyone help me come up with an engaging title for my research paper regarding mood swings during pregnancy? Baby Blues? Ups and Downs of Pregnancy Many Months -- Many Moods

    asked by Kim
  53. counting outcomes

    in volleyball, you can volley, set, or spike. how many ways can your team make two plays? use tree diagram. thanks. a tree diagram would show 9 possible outcomes how to you do and count outcomes

    asked by dillon
  54. science

    I am writing an essay on the subject of, 'The metabolism of green plant cells in relation to energy exchange process.' Can anyone advise of key ideas to include please? This is a very, very complicated subject. Look here:

    asked by Gemma
  55. Math Concepts

    What is the difference between an arithmetic sequence and a geometric sequence? In an arithmetic sequence, the difference between successive numbers is the same. Example: 1, 3, 5, 7, 9.. In a geometric sequence, the ratio of successive numbers is the same.

    asked by Amy
  56. ESL

    Traduzca esto a inglés porque no sé a: Mi nombre es Jazmyne. Vivo en el Bronx y soy trece años. Atiendo a la escuela media y estoy escribiendo esto para la clase de ESL Myname is Jazmyne. I live in the bronx and I am thirteen years old. I attend middle

    asked by MALONY
  57. debate!

    Should Gorbachev be blamed for the current economic woes of Russia? I need lots of opinions becuase I am writing a debate thanks! Here are a number of sites with opinions on that question.

    asked by bob!>?
  58. Inverse trigonometric functions

    How to find the value of arctan(2 sin (pi/3)) without using calculator or sketching a triangle. It is like taking u=something and then evaluating. Thanks. the solution relies on the fact that you should know the ratio of sides of the 30,60 90 degree

    asked by Jen
  59. inverse trig function

    How do I do this by sketching a triangle. sin( arcsin(1/2) + arccos(1/2) ) Thanks. let's start with arcsin(1/2) draw a right angled triangle where theta and alpha are the two angles other than the 90º angle. suppose you make the opposite side 1, and the

    asked by Jen
  60. permutations in math

    suppose 15 countries compete in an olympic event. gold, and silver,and bronze medals are awarded. how many different arrangements of winners are there if no country wins more than one medal in this event? show the work. thanks. 15 countries can get the

    asked by dillon
  61. chemistry

    What causes surface tension? Please and thanks for the help. intermolecular forces, that is , molecules attracting other molecules, and "holding fast" together. Here are a couple of pretty good sites where you can read more about it.

    asked by Julie
  62. maths

    what is the ratio of 500ml of orange juice for every 75ml of water? 500 mL/75 mL = ??

    asked by repa
  63. chem

    How does molar mass affect the boiling point of covalent substances? The general rule is that heavier molecules boil at a higher temperature. thanks

    asked by Lydia
  64. history

    name 2 jobs for Native American boys & 2 jobs for the girls. Thank you for using the Jiskha Homework Help Forum. You do not mention if you mean volunteer or paying jobs. Just think about things teenagers, etc. can do in any group. Native Americans respect

    asked by Daniel
  65. Elem. Ed.

    A child is waving a wet paint brush in the air, the teacher should: 1. tolerate the behavior as an expression of childhood exuberance. 2. remind the child of the rules in the art center. 3. use this situation as an opportunity to teach splatter painting.

    asked by Keisha
  66. English

    Hi, I'm writing an essay on "what makes a city world-class"...I have all of my points and everything set, I'm just stuck on how I should start my essay. I can't think of any good introductory sentence. Your introductory sentence should be something VERY

    asked by Raj
  67. math, basic

    how do you write 5 and a half in a fraction not like this because i thought it was 5 1/2 but it was wrong. 5 1/2 is also 11/2, which is considered an improper fraction. I hope this is what you were asking.

    asked by jacky
  68. Physics HELP!!!!!!!!

    Could you use a straw to sip a drink on the moon? yes no not enough information to decide Justify your answer. Don't worry about this I figured it out already. Thanks! Answer is no.

    asked by Mary
  69. math

    what does x= to 4-2x=7x+13 add two x to both sides 4=9x+13 subtract 13 from both sides. -9=9x divide both sides by nine. 4-2x=7x+13 add 2x to both sides 4-2x + 2x =7x+13 + 2x 4 = 9x + 13 add -13 to both sides 4 - 13 = 9x + 13 - 13 -9 = 9x divide both sides

    asked by angel
  70. the law of sines/math

    Find the area of each figure ??

    asked by Sabrina
  71. social studies

    What is a mixture of sand, lime, and water that is used as a lubricant to move stones in ancient Egypt???? I don't know that it was. Lime was not available to the Ancient Egyptians, however, gypsum was. They used a mortar of gypsum, sand, and water to

    asked by kelsey
  72. Social studies

    What are alot of items needed in the afterlife??????? i need lots of ideas!!!!!!!!! Items needed in the afterlife???? If something is dead, then depending on how one believes, all will be provided or you won't need anything. I am not sure what your

    asked by kelsey
  73. Science

    What are the properties of plasma? I brought home the wrong school book and of course I forgot what the properties were. Thanks loads for the help. http://en.wikipedia.org/wiki/Plasma_(physics) Thanks a lot, it really helped. Next time Iwill pay attention

    asked by Rae
  74. Occupational Safety

    Do other countries have individuals who played a significant role in starting safety programs in their countries? need references thanks You might find this article interesting. http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=1446786

    asked by Ashley
  75. AIU

    WHAT IS A REGIONAL TRADE BLOC? A regional trade bloc is a group of countries that agrees to buy each others products without imposing tariffs.

    asked by ROY
  76. Safety

    who is the father of occupational medicine in the United States I can't find anything on the web. Here is my suggestion: At the school, check the encyclopedia under Public Medicine, and Occupational Health. If that fails, call the local Public Health

    asked by Ashley
  77. humanities

    i wrote this on martin luthers 95 theses and the main themes that run through it, except i cant think of a good ending sentence In 1517 Martin Luther posted 95 theses on the door of the Castle Church in Wittenberg. In my opinion the list is very repetitive

    asked by lizzie
  78. Safety

    Do other countries have individuals who played a significant role in starting safety prgrams in their countries? NEED REFERENCES Thanks! sometimes but not very much umm I need a better answer than that Thank you for using the Jiskha Homework Help Forum

    asked by Ashley
  79. Math

    What is 20 to the 1/2 power? How do you figure it out? That would be the square root of 20, which is also 2 times the square root of 5. Use a calculator to get the value, which is about 4.47. A log table or slide rule could also be used.

    asked by Cookie
  80. math

    how do you multiply intergers EX..... -4 x 5 = -20 4 x 5 = 20 right? Well the negative 4 makes your answer into a negative number also. Do you get it now?

    asked by ravin
  81. Safety

    who is the father of occupational medicine in U.S. Dr. Alice Hamilton could be considered the "mother" of occupational medicine in the U.S. http://www.answers.com/topic/advisory-committee-on-construction-safety-and-health-accsh

    asked by Ashley
  82. language arts

    As some of u might know, i wrote a monologue and now i have it new, improved and not copied off of others work (tho i did quote a couple people) ANd i wanna add that this monologue is about a women whos parents are presuring her into having an abortion but

    asked by lizzie
  83. A.P. Lit

    Anyone want to revise? Brains vs. Brawn

    asked by Taylor