Questions Asked on
October 29, 2006

  1. Algebra

    One number is 3 times another. If the sum of their reciprocals is 4, find the two numbers. __ 15 this is supposed to be 4 over 15 Let the smaller number be x. The two numbers are then x and 3x. You have only one unknown now. 1/x + 1/(3x) = 4 4/(3x) = 4

    asked by Daniela
  2. Physics- i need to know how to do these problems

    Two projectiles are launched from the ground, and both reach the same vertical height. However, projectile B travels twice the horizontal distance as projectile A before hitting the ground. a. How large is the vertical component of the initial velocity of

    asked by anonymous
  3. ap chemistry

    what does H2 + CH2 form? (what product?) What is CH2? There is a (CH)2 but I don't know of a CH2. Yes, I meant to ask: What product is formed by this reaction: H2 + (CH)2 My original answer is gone but I will repost. (CH)2 is HCtriplebondCH which is

    asked by sara
  4. physics

    the cables of a suspension bridge as well as the elements of many man-made structures are designed to behave elastically. can anyone briefly explain to me why it is absolutely necessary that such elements function elastically? Bridges and other man-made

    asked by Katrina
  5. ap chemistry

    What product is formed by this reaction: H2 + (CH)2 Answered the original post below.

    asked by sara
  6. Microeconomics :o)

    "In both monopoly and perfect competition the profit maximising output is at the level at which MR = MC, but only in the latter is the optimum output level such that P = MC" Explain the above statement by comparing the model of perfect competition with

    asked by James
  7. Physics (Elastic Collision)

    A 0.400 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball. (a) What is the mass of the second ball? (b) What fraction of the original kinetic

    asked by Haley
  8. Weighted Averages

    I am assuming this is a 1,000g mixture. 42% H3BO3 = 420g H3BO3/(420g H3BO3+580g H2O)= 0.42 by mass. 420g H3BO3/(420g H3BO3+580g H2O+Xg H2O)= 0.06 Solve for X Check my thinking. Check my work. There is an alternative approach. You want to dilute it by a

    asked by DrBob222
  9. chemistry HELP

    Use the following information to identify element A and compound B, then answer questions a and b. An empty glass container has a mass of 658.572 g. It has a mass of 659.452 g after it has been filled with nitrogen gas at a pressure of 790. torr and a

    asked by sonya
  10. possible functions

    How to find all possible functions of f with a given derivative. 1. f'(x) = 2 2. f'(x) = sinx Integrate each function. Remember that there can be an arbitrarcontant C added to each integral. 1. f(x) = x + C 2. f(x) = -cos x + C We haven't learned

    asked by Jen
  11. math

    x= 6/4

    asked by ABby
  12. quick accounting question

    In trial balances, can the account number be on the right side? Thank you for using the Jiskha Homework Help Forum. I have always followed the format of: ACCOUNT DEBIT CREDIT

    asked by anonymous
  13. math

    1. x-3 7x-3x = 4 x -6 turns into +6 so 4x=12 x=3 2. 13=5-13+3x 13=-8 +3x 21 = 3x x=7 3. x+x+x+3x+2-6 = 31 6x -4 = 31 6x=35 = 5.83 (are you sure its 3 x's?) 5. 5-t-t=-1 5-2t=-1 -2t = -6 t= 3

    asked by Nate
  14. philosphy

    It doesn't snow in jamica .because that's in the caribbean,and it never snows anywhere in the caribbean Do you have a question about this syllogism? It never snows anywhere in the Caribbean Jamaica is in the Caribbean. Therefore, it doesn't snow in

    asked by fran
  15. Chemistry

    What is the precipitate of calcium nitrate, Ca(NO3)2, and sodium chloride, NaCl?? Sodium nitrate and calcium chloride are both soluble in water.

    asked by none
  16. Math

    75 + -63 + 7( 115/ -5 + (-8)2 ) -63 is -6 to the third power and (-8)2 is (-8)to the 2nd power. I got 15913 I think that that is wrong and my calculater wouldn't fit all the numbers so I don't know how to check it! Can you please try it so I can double

    asked by Lanna
  17. chemistry

    There has to be a precipitate of calcium nitrate, Ca(NO3)2, and sodium chloride, NaCl because when I clicked none, it came out wrong. Please help check the solubility table there. Nitrates, and chlorides are soluble.

    asked by none
  18. Physics

    How do I do these? A passenger at an airport steps onto a moving sidewalk that is 100.0 m long and is moving at a speed of 1.5 m/s. The passenger then starts walking at a speed of 1.0 m/s in the same direction as the sidewalk is moving. What is the

    asked by Ellie
  19. More Physics

    The diagram below indicates three positions to which a woman travels. She starts at position A, travels 3.0 km to the west to point B, then 6.0 km to the north to point C. She then backtracks, and travels 2.0 km to the south to point D. a) What is the

    asked by Ellie
  20. Probability

    This is an example question, but I'm not sure how my instructor came up with the answer. Could anyone explain in detail please. Among the contestants in a competition are 49 women and 29 men. If 5 winners are randomly selected, what is the probability that

    asked by Mary
  21. geography

    whr do cattles and sheep live like in high altitudes or middle or low altitudes? Cattle need food, water, and a temperature range that does not cook, nor freeze them. So if you choose to examine an altitude, check to see if those are available. If so,

    asked by rohit
  22. geography

    are alps bigger or mountains?or wat's the difference between them? Alps are mountains in one specific geographic region. It is a historic name, there is no difference between the geography of "alps" and "mountains". need a definition of tall grass in

    asked by rohit
  23. Probability

    Find the conditional probability. Suppose one card is selected at random from an ordinary deck of 52 playing cards. Let A = event a queen is selected B = event a diamond is selected Determine P(B[A) How do you go about solving this one? I know there are 4

    asked by Mary
  24. cellbio

    How many protons are pumped into the stroma for each ATP generated during Photophosphorylation in oxygenic phototrophs? What is the maximum number of ATP molecules that can be produced in the inner membrane of the mitochondria for every one molecule of

    asked by tracey
  25. History

    I have to do a 4-6 sentence presentation on Lizzie Borden tuesday... Any ideas for a quick costume or the presentation???? Thanks, Cassidy put on a long skirt, bonnet if you can find one, braid you hair if it is long, and carry an axe. Oh, I forgot to add,

    asked by Cass
  26. world geography

    what significant event occured in Adrianople during the "fall" of the Roman Empire? please help me... thanks The Romans lost the battle due to a serious miscalculation of the enemies' calvary. See the above

    asked by Danielle
  27. international business

    As a Venezuelan business owner (you may select the specific business of your choice), you are very interested in the fact that Venezuela has recently been accepted as an associate member of MERCOSUR (July, 2004). You need to prepare your operations in view

    asked by constance
  28. international business

    For many global companies, China represents a very attractive market in terms of size and growth rate. Yet, it ranks lower in terms of economic freedom and higher in political risk than other country markets because it has a communist government. Despite

    asked by constance
  29. English

    Where are some good study sights for english? I have a test and would like an aid. English is a multi-faceted subject: Literature (poems, plays, novels, short stories), grammar, and writing. So you have to be much more specific. Focus on your notes you

    asked by Amanda
  30. Retail Math

    The buyer of women's gloves currently has an average inventory of $20500, with an annual turnover rate of 4.0. Because this rate of stock turn is below the industry average, a 7.82% increase in turnover is sought. Assuming a constant level of inventory,

    asked by Alex
  31. Social Studies

    Any ideas for an opening sentence pretending to be Lizzie Borden??? tHANKS, Cass have you seen the site crime library. look it up on google and serach for lizzie borden otherwise - Lizzie Borden took an axe And gave her mother forty whacks. And when she

    asked by Cass
  32. math

    wat is the metric ladder? in order greatest to least? I am unfamiliar with the term "metric ladder." However, I suspect it is the list of the prefixes. From kilo hecto deca unit deci centi milli Note that there are a number of prefixes both above and below

    asked by chemiii
  33. Math help plz

    Identify three different situations where you could apply the Pythagorean Theorem. help.. thank u The Pythagorean Theorem describes a right-triangle. Therefore it can be applied anywhere a triangle exists.

    asked by Linsey
  34. Math

    I want to know how do find a percent of something, just in general-the formula or whatever, and how to make something into a fraction. Percent= piece/whole * 100 So...something like 439 divided by 612x100? (That's not the actual problem, though) yes that

    asked by Squee
  35. math

    u know how deka and deci are on the metric scale?well wat if the question is convert 100 dm into (answer)Dm? I assume you are using Dm for decameters. The correct abbr. is da. Here is what I do. kilo hecto deca unit, meter, liter, second, etc deci centi

    asked by chemiii
  36. math

    |(x-3)/(x+5)|< 2 i've asked so many ppl, but they all give me different answers :( Well if the expression is less than two, and the abs function is positive, then the ratio is between 0 and 2. Lets look inside the abs function, it can be negative, because

    asked by joe
  37. Physics

    One of the holes on a golf course lies due east of the tee. A novice golfer flubs his tee shots so that the ball lands only 64 m directly northeast of the tee. He then slices the ball 30 degrees south of east so that the ball lands in a sand trap 127 m

    asked by Anonymous
  38. Government

    I don't have a question but I need informaton on how to get started on a project. The assignment is to research, write, and create one amendment/segment of a documentary on Amendment #6. It says to research people, main events and issues behind the passage

    asked by Barb
  39. social studies

    What is slash and burn method? in terms of farming? what is your question in relation to? Check this site. slash and burn (during indian times) is when they slashed the bark off of trees and then burned then

    asked by Pat
  40. Stats

    Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: $9500 Variance: $1250 May: Mean: $7400 Variance: $1425 June: Mean: $8600 Variance: $1610 a) find the mean and standard

    asked by Dee
  41. ap chemistry

    oxidation- reduction reactions What about them. Here is a site that may help you or repost with a more specific question.

    asked by Brianna
  42. Please proofread my essay

    Could you please proofread my essay. Please check pronoun usage,fragments, a better title and better thesis. Here is my prompt: 1. Does the US need to reduce its dependence on Middle Eastern oil? If you argue that it does, then provide a way for this to be

    asked by Soly
  43. english

    You need to explain applications: I assumed you were describing visa applications. Should applications from certain countries be given priority? College applications? This is a sensitive subject but in my opinion, yes. I found it extremely valuable to

    asked by bobpursley
  44. new forum up and running

    The new forum is live. No more random error messages. Much faster searches, sorts and queries. Have a nice day. Thank you, Leo! The new forum is great!

    asked by Leo
  45. Chemistry

    Give the electron configurations of 22Ti+2 Do you know how to do this? Here is a site that will help you. Repost with specific questions about the points you don't understand.

    asked by Justyna
  46. Chem

    For germanium atom write: the set of four quantum numbers for the two highest energy electrons in an atom of Ge. If you go to and click on Ge, then click on the electron configuration (on the left side of the site but you may need to

    asked by Ali
  47. Ap CHem

    For how many electrons in Sr. Does A)n=4; l=1 B)n=3;l=2;ml=1 C)n=1;l=1;ml=0 You must know the variations possible. n = 1, 2, 3, ...... l = 0, 1, 2, etc up to n-1. ml=-l to +l (this is -ell to +ell) ms = +/- 1/2 Start with n = 1 and work your way up.

    asked by Susie
  48. projects

    And you ought to do some research on mordants. In this case try the experiment on each dye with and without a tablespoon of vinegar in the solution. maybe if you test water it would probably be the same, good question AND, you may wish to try more than one

    asked by bobpursley
  49. math

    what is a SQUARE ROOT? sqrt(x) * sqrt(x) = x sqrt(x) = x ^ (1/2) details:

    asked by matthew
  50. AP US

    Was the audience of Federalist 10 the New Yorkers? Here's the opening line of Federalist Papers # 10: "To the People of the State of New York:"

    asked by Ted
  51. Microeconomics

    "In both monopoly and perfect competition the profit maximising output is at the level at which MR = MC, but only in the latter is the optimum output level such that P = MC" Explain the above statement by comparing the model of perfect competition with

    asked by James
  52. Math - Bases

    What is 12 base 5? Would you just divide 12 by five and get 2 (but then what about the remainder) If you are refering to logs, 12 base 5 means log of 12 to the base 5. Call it x. 5^x = 12. x = log 12/log 5 (any log base can be used) x = 1.07918/0.69897 =

    asked by Laura
  53. Probability

    70% of all burger chain stores decided to advertise in their local newspaper. Of those chain stores that advertised in thier local newspapers, 60% had an increase in sales. Of those chain stores that did not advertise, 25% had an increase in sales. What is

    asked by Cari
  54. Math

    Yesterday I learned to solve a right triangle assuming I know the 3 angles and 1 side. I can now establish the lengths of the 2 other sides using a sine table I printed off the net. Today I hope I will learn to solve a right triangle but now I only know 1

    asked by Mike
  55. Microeconomics

    why there is an assumption "there must not be a resale between two markets" for price discrimination "There must not be aresale between the two markets"-is not an assumption under price discrimination but apre-condition for price discrimination. If there

    asked by whhgn
  56. English

    in the novel Bearstone, What color is the horse, Blueboy??? If you can't tell by reading the book, maybe one of these websites can help. =) Thank you for using the Jiskha Homework Help

    asked by Cass
  57. science

    How many times has the United States been to the moon? It depends on what you mean "been" to the moon. Man and unmaned? Explorer probes? You can get an idea by counting the junk left behind.

    asked by wanda
  58. Algebra

    Hi I am taking my final right now and I have a few problems I am stuck with, can you help me? 1. (x-3y)(x squared+3xy+9y squared) 2. (x+2)(x-2)(x-3) they both need to be multiplied thanks I will critique your thinking, if you post it. This is your final...

    asked by Daniela
  59. Algebra

    Here are some more I have problems with. solve: 9

    asked by Daniela
  60. Algebra

    sorry clicked wrong button. solve: 9 -1=x-11 ____ _____ x-5 x+5 these are supposed to be fractions Your equation is illegible, and can be interpreted too many ways. Try writing it on a single line, using parentheses for clarity and / for fractions

    asked by Daniela
  61. Algebra

    solve: 3 6 ____ = _____ x-1 x+2

    asked by Daniela
  62. Algebra

    last one of my problems :-) solve: square root of x-1=x-3 This is an impossibility. there must remain any mistake within the problem

    asked by Daniela
  63. news homework

    (Help!) In want wed should i go to . to find the news? Graciela, are you looking for a News Website? If so, here are a couple: GuruBlue," Thank you so much!" thanks a lot!!!!!!!!!

    asked by Graciela
  64. Algebra

    Using the index of a series as the domain and the value of the series as the range, is a series a function? Include the following in your answer: Which one of the basic functions (linear, quadratic, rational, or exponential) is related to the arithmetic

    asked by V
  65. Algebra

    Use the geometric sequence of numbers 1, 1/3, 1/9, 1/27… to find the following: Using the formula for the sum of the first n terms of a geometric series, what is the sum of the first 10 terms? Carry all calculations to 6 decimals on all assignments.

    asked by Gina
  66. mean value theorem

    Show that the function f(x)=1-|x|, [-1,1] does not satisfy the hypotheses of the mean value theorem on the given interval. Also how do I graph the function together with the line through the points A(a,f(a)) and B(b,f(b)). Also how do I find values of c in

    asked by Jen