Questions Asked on
May 6, 2007

  1. science

    the first word of an organisms scientific name http://en.wikipedia.org/wiki/Binomial_nomenclature

    asked by jean
  2. science

    I have several questions regarding essential oils. Please answer as many questions as you can that is within your expertise. For each of the following naturally occurring oils: Citronella ,eucalyptus,cinnamon leaf,nutmeg,clove,rose,jasmine,lavender a.how

    asked by khairul
  3. physics

    I have to build a mini solar car for a school project and i have three solar cells that i bought. whenever i hook up the solar cells i get a reading between 1.5-1.8 volts, but when i hook it up to the motor it wont start it. According to the box the motor

    asked by Matt
  4. chemistry

    a solution in which no more solid can be dissolved is referred to as ???? Saturated?

    asked by emi
  5. science

    how do jupiter's moons stay in orbit around jupiter? Gravity.

    asked by s
  6. Elem. Ed.

    Can you please help with this question? Home visits,where a teacher visits children from her classroom and their parents in their homes,are valuable to all concerned. Which of the following is the greatest challenge to this form of parent involvement? 1.

    asked by Jill
  7. science

    black-body radiation and cosmic microwave background This is hardly a question. http://en.wikipedia.org/wiki/Cosmic_microwave_background_radiation

    asked by sonia
  8. CHEMISTRY

    WOULD YOU PLEASE SAY ME WHATWE USE ETHANOL IN SENTHESIS OF CU(NH3)4SO4.H2O I'm not sure. You don't say what kind of ethyl alcohol nor how you synthesized the copper salt; however, an educated guess is that you used absolute alcohol (100%) to form the

    asked by NAZANIN
  9. science

    could someone please crique this algebra x must be the subject 6y = 9 - 3x 3x = 6y + 9 x = 2y + 3 is this correct please Add 3x to each side.Giving 6y+3x=9. Subtract 6y from each side.Giving 3x=9-6y. Divide each side by 3.Giving x=(9-6y)/3. Divide

    asked by bex
  10. chem equations

    could someone tell me how i could solve this chem equation CH4 + NH3 +O2...> HCN +H20 AND USE THE LOWEST WHOLE NUMBER COEFFICIENT i WOULD BE GRATEFUL FOR ANY POINTERS Try these coefficients. 2,2,3==>2,6 Hi bex heres a little more help for you. Answer is

    asked by bex
  11. Personal Finance-Mathe

    Sue and Tom Wright are assistant professors at the local university. They each take home about $40,000 per year after taxes. Sue is 37 years of age, and Tom is 35. Their two children, Mike and Karen are 13 and 11. Were either one to die, they estimate that

    asked by Jamie
  12. calculus

    what is the anti-derivative on square root of cosh^2(x)? The square root of cosh^2 x is just cosh x, and the integral (or "antiderivative", if you prefer thet term) of that is sinh x.

    asked by HELP PLZ
  13. Chemistry

    What is the solubility of silver chloride in water at 25C? (Ksp = 1.6 x 10^-10) I don't know how to do the work AgCl(s) ==> Ag^+ + Cl^- Let x = molar solutility of AgCl. Then x = molar concentration of Ag^+. and x = molar concentraton of Cl^- Then Ksp =

    asked by Chem girl
  14. Chemistry

    What is the solubility of lead bromide at 25C? (Ksp = 4.6 x E^-6) You have used another name here but work the problem the same way I showed you for AgCl. The only difference is that PbBr2(s) ==> Pb^+2 + 2Br^- Post your work if you get stuck.

    asked by Chem HELP
  15. Chem

    What mass of nickel is dissolved in 100. mL of saturated nickel (II) hydroxide? (Ksp = 1.6 X 10^-16) How do I do this? Please don't use different names. It helps us to know what we have already told you in other problems if we have some consistency with

    asked by HELP ME
  16. calc

    derivative of (x^3/6)+(1/2x)? i got (x^2/2)-(1/2x^2) is that correct? and then wut is the (F'(x))2?...meaning the derivative squred? if you meant (1/2)x^2 - 1/(2x^2) you are correct I don't think they are looking for the square of the derivative, but

    asked by MARY
  17. Calculus

    Express in exponential form: y = -log x with base 2 the - in front is like a -1 multiplied so write it as y = log2 x-1 then 2y = 1/x

    asked by Raj
  18. Algebra help needed!

    x ^2 + 6x + 9 (x ^2 - 3x) _____________ __________ x (x ^2 - 9) possible answers are 1 ___ x -3 x-3 x + 3 1 ____ x + 3 so far i got 3x(3X-4)/X^3-9....then facotor the denominator...after that cancel out the like terms.. Simplify I am using parenthesis to

    asked by Heidi
  19. Math

    This problem is really confusing, I have been trying and I can't get the answer, can you help me? An Afternoon event was a race through the park. The race started at the point with the coordinates of (2,3). The first turn was at (2,6), the second turn was

    asked by Robert
  20. Pre-calc

    prove the identity: (cosx)(tanx + sinx cotx)=sinx+cos(squared)x i need steps to show how i got the answer generally, it is a good idea to change all trig ratios to sines and cosines, and start with the more complicated-looking side. so.... LS =

    asked by Stacey
  21. Simplify Completley

    x/(6)+ 11x/6 2x

    asked by margie
  22. CALCULUS

    what is the derivative of ln(x-1)? If you are studying the calculus of logarithms your question surprises me, since that is one of the most basic ones in that topic. in general if y = ln("anything") then y' = 1/"anything" * derivative of "anything" just

    asked by URGENT
  23. Math

    Keiko has 7 colors of lanyard. She uses 3 different colors to make a keychain. How many different combinations can she choose? 7 for the first, 6 for the second and 5 for the third. The answer is the product of those numbers, no matter what order the three

    asked by Allison
  24. math

    I do not undeerstand this question for homework. Determine if the set is closed for the given operation. 1. yes or no- The set of positive fractions for division. 2. yes or no=The set of positive integers for subtraction. Can someone help me?

    asked by tayloir
  25. math

    I have write the number to a fraction. 1/8. Would it be .08% or 12.5 % 12.5%

    asked by priscilla
  26. economics

    If the reserve requirement is 20% and a bank doesn't have excess reserves, why would a $100 deposit lead to a greater than $100 increase in the money supply. answer posted above.

    asked by Carter
  27. math

    HELP. Help I have to decide whether these are rational or irrational. .73737373... .61611611161111..... 1/23 Can someone explain this to me? Rational numbers are just fractions. The decimal expansion of fractions will either terminate or it will become

    asked by Kimberly
  28. physics

    can anyone plz explain to me what is the electrical nature of water molecules????i look through many information on the websites...i just don't get what they are talking about...PLZ HELP!!THX A LOT!!! The water molecule is the shape of a V. The the oxygen

    asked by koeit
  29. Social Studies

    What's a web for help with Ancient Egyptians' mummification process? Here are a couple of sites that will be of help. http://www.touregypt.net/magazine/mummificationinancientegypt.htm http://www.egyptologyonline.com/mummification.htm Thanks so much. Thanks

    asked by Lily
  30. Algebra help please

    Simplify I am using parenthesis to separate , if i write the whole prob as is, it runs together a + 9 (3a - 18) _____ ________ 36 - a^2 (3a + 27) possible answers i can choose from 1 ____ a + 6 1 ____ a - 6 - 1 ____ a - 6 - 1 ___ a + 6 I am thinking it is

    asked by Kitty
  31. I am lost

    Simplify this expression x ^2 - 64 / x + 8 _______ ______ x ^2 -25 / x - 5 Please note that we don't do students' homework for them. Our tutors try to give you the information to help you complete your assignment on your own. If there's not a tutor with

    asked by James
  32. Diorama

    I just thought that there are people always on this web 2 help. Now I know. *-* Lily, yes I am a teacher, and so are a number of others who help here. We are happy to help, but are not always here at the exact moment you are. Good luck with your project.

    asked by Lily
  33. Calculus

    yes! tnk u ok? It's actually (x->0.) Find the limit of cot(x)-csc(x) as x approached 0? Lim [cot(x) - csc (x)] ..x->0 = Lim [(cos x -1)/sin x] ..x->0 Use L'Hopital's rule and take the ratio of the derivatives: Lim (-sin x/cos x) = 0 x->0 thank you very

    asked by Maria
  34. econ.

    If the reserve requirement is 20% and a bank doesn't have excess reserves, why would a $100 deposit lead to a greater than $100 increase in the money supply. because of the money multiplier. A $100 deposit (e.g., into a checking account) gives the bank

    asked by Carter
  35. some algebra help (radicals)

    I hope I am writing this down right.. I am trying to do some practice questions to learn 10^5 (sqrt)2y - 4^5 (sqrt)2y I am trying to figure out how to solve this They gave us some answers to choose from, but I am clueless on how to solve this 6y ^5 (sqrt)2

    asked by Cassie
  36. Science

    Postive charges move when they are attracted to negatives, or when they are repelled by another positive. in What Situations can positive charges move? Put 2 magnets 2gether. Or u can look @ ur science textbook or w/e. lalalalalalalalalala. That's my name!

    asked by bobpursley
  37. finance

    There should be some websites in here to help you: http://www.google.com/search?q=payroll+tax+formulas+WI&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA =) project is to calculate payroll. I have the gross earnings, what

    asked by Writeacher
  38. TO ALL STUDENTS

    If you are able to help another student with his/her homework, please do. But if you cannot, please don't post anything. If a teacher sees a post has been answered, he or she might think the original student doesn't need help anymore. Thanks. =)

    asked by Writeacher
  39. Physics and chemistry

    why does the electrical resistance in your body decrease when you get wet Salt is in the skin, salt water is a good conductor.

    asked by Jimmy
  40. Economics

    Suppose that you are a policy maker concerned with correcting the effects of gases and particulates emitted by an local power plant. 1. What tools would you use? 2. What would be the benefits of the actions? 3. What would be the costs? 4. How would you

    asked by Jo
  41. health

    This isn't a school question, this is for my own understanding. I'm thinking about majoring in it. What is the difference between a respiratory care person and a respiratory therapist? I think they are the same. And could someone tell me what goes into the

    asked by jake
  42. calculus-integration!

    should i use substitution?? if yes how should should i use it? plz i need some directions? k plz someone?...so far i used trig. substitution. i got a=8, so i used x=asin(è)so according to this substitution i got x=8sin(è) and dx=8cos(è) dè...then i

    asked by Maria
  43. Calculus

    Find the inverse of each relation: y = (0.5)^(x+2) and y = 3log base 2 (x-3) + 2 For the first one I got y=log base 0.5 (x+2)...but the answer in the back of the textbook says that it is not x+2, but x-2. Can someone tell me why it would end up being x-2

    asked by Raj
  44. English

    In the first day of Killer Angels, (pages 1-68) what is the setting, and 3 conflicts. Also, I need to make up a spy name from the civil war Anonymous, we do not do your homework for you. When you have read the assignment and answered the question, then we

    asked by Anonymous
  45. Titration/Acid-base chem

    a .4000 M solution of nitric acid is used to titrate 50.00 mL of .237 M barium hydroxide (Assume that volumes are additive). a) Write a balanced net ionic equation for the reaction that takes place during titration. b) what are the species present at the

    asked by Keith
  46. Science

    Give examples of parasitism, mutualism and commensalism.

    asked by Emma
  47. English

    im an only child and parents are too busy to help so, i need to interview someone that went to school 20 years ago and i was wondering if anyone would like to help me. Theses are my 7 questions because i already have 3 answered: 1.How was school like back

    asked by ron
  48. math

    I do not undeerstand this question for homework. Determine if the set is closed for the given operation. 1. yes or no- The set of positive fractions for division. 2. yes or no=The set of positive integers for subtraction. Can someone help me? Is there a

    asked by Kimberly
  49. ap nsl [test tomorrow!]

    what is a legistlative veto. Here are several good answers: http://www.google.com/search?q=legislative+veto&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA =)

    asked by serts
  50. English

    In the first day of Killer Angels, (pages 1-68) what is the setting, and 3 conflicts. Also, I need to make up a spy name from the civil war The conflicts need to be _____vs.________ So far i have: Setting; Gettsyburg, 1863 Conflicts: Union vs. Confederacy

    asked by Anonymous
  51. Pre-Calc

    Hi, I need help writing log(x^2-9)-log(x^2+7x+12) as a single logarithm. Thankyou! since there is a subtraction sign in between that means you divide the two terms...so it would be log(x^2-9/x^2+7x+12) you can go further and factor the two...so by

    asked by Ashley
  52. MATH.

    Radio station KMA is increasing its radio listening radius from 40 miles to 50 miles. How many additional square miles of listening area, to the nearest tenth, will the radio station gain? I thought it was 10 miles.But it says round.So im a little

    asked by megan
  53. MATH!

    To get from his high school to his home, Jamal travels 5.0 miles east and then 4.0 miles north. When Shelia goes to her home from the same high school she travels 8.0 miles east and 2.0 miles south. What is the measure of the shortest distance, to the

    asked by megan
  54. physics

    we put 2 mirrors perpendicular to each other and then an object in front. the result is 3 images of that object. how does the middle image occur? The middle image appears directly behind the intersection of the two mirrors, and is a double-reflection off

    asked by JJ
  55. Calculus HELP

    for the power seies n^4x^n/2(n-1)...find the radius and interval of convergence

    asked by Steph
  56. Chemistry

    "Solid dinitrogen pentoxide is added to water." I got this as my answer: N2O5 + H20 -> 2HNO3. Do I need to break 2HNO3 apart since it's a strong acid? I thought it wouldn't since I thought it was a synthesis problem. I read online that this was the answer

    asked by Rachael
  57. maths

    The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) from the central

    asked by k
  58. trig help

    I need help finding sinA if cosA=(-3/5) and A is greater than 90 degrees, but less than 180 degrees. Draw the quadrant diagram. In the upper left quadrant, greater then ninety degrees, but less than 180, cosine is neg, and sine is positive. Draw a three,

    asked by Cory
  59. maths

    The head of an industrial machine moves in a straight line horizontally backwards and forwards from a central position. The movement can be modelled using the sine wave d = 80 sin ( pie t), where d is the horizontal distance (in cm) from the central

    asked by k
  60. economics

    If the reserve requirement is 20% and a bank doesn't have excess reserves, why would a $100 deposit lead to a greater than $100 increase in the money supply? Interest?

    asked by Carter
  61. Physics, please help!!!!

    A 3.00 kHz tone is being produced by a speaker with a diameter of 0.175 m. The air temperature changes from 0 to 29°C. Assuming air to be an ideal gas, find the change in the diffraction angle My solution v directly proportional to sqrt T v = sqrt 302

    asked by Papito
  62. life science

    name the three enviormental factors in order for an organism to live. temperature, nutrients. Nutrients include oxygen, nitrogen, carbon dioxide and other gases if needed. Some organisms use ammonia as a nutrient. Since this is not my area of expertise, I

    asked by Emily
  63. CALC

    I am sorry i still don't know how to start. and i am sorry for the problem earlier..it wasn't my fault :( Note that the way students like you are asked to solve this and similar problems is usually not the way people like me solve such problems. It is a

    asked by URGENT PLZ
  64. WHY?

    WHy are my questions being deleted? plz help me..i didn't mean to be rude :( Repost please. Please post under just one name. Posting several questions under differing names (Julia, Steph, etc) is not conductive to a healthy relationship to those

    asked by URGENT PLZ
  65. Cos(pi/4 + h) = 2^(-½)[1 - h - h^2/2 + h^3/6 +..]

    This reply to some student got deleted, so I'm reposting it. Cos(pi/4 + h) = Cos(pi/4)Cos(h) - Sin(pi/4)Sin(h) = 1/sqrt(2)[1 - h - h^2/2 + h^3/6 + h^4/24 - h^5/120 - h^6/720 + ...] Note that the way students like you are asked to solve this and similar

    asked by Count Iblis
  66. Algebra

    Given f(x) = -5x-1, find f(a-1). Would this be -5a+5-1? Yes, you have it. What grade are you in?

    asked by Erin
  67. Algebra

    Can someone show me step by step how to do this problem to have an example to go by so I will be able to do my other problems. Thanks Solve by substitution 4x-12y=5 -x+3y=-1 I know that you have solve one of the equations. I have picked the second one so

    asked by jessica
  68. Table of Contents

    I seem silly asking this question but.... How does a table of contents look like? I forgot. Thank you for using the Jiskha Homework Help Forum. The Table of Contents in ANY book that you are familiar with, will give you an idea of the format. Also, here is

    asked by Lily
  69. Math

    How would you rewrite the equation y = 3x+1 as a function of x. Hmmm. It is written now as a function of x. Do you mean like this, where x is a function of y? x= 1/3 y -1 ? Could this be a trick question? I thought It was already a function of x? Thanks

    asked by Erin
  70. calculus

    Find the solution to the differential equation dy/dx = (x^3)/(y^2), where y(2) = 3 I have: The integral of: dy(y^2) = the integral of: dx(x^3) (y^3)/3 = (x^4)/4 The answer is supposed to come out to be y= the cube root of: ( 3/4x + 15 ) Thanks The general

    asked by Suzie