Questions Asked on
May 18, 2007

  1. Math- Adv. Alg. w/ Trig.

    I need help simplifying this expression: (3x^3y^5 + 6x^2y^-2/6x^5y^-2)^2 (3x^3y^5 + 6x^2y^-2/6x^5y^-2)^2 the second term has a y^-2 in the numerator and denominator, so.. (3x^3y^5 + 6x^2 /6x^5 )^2 (3x^3y^5 + 1 /x^3 )^2 I am not certain much more can be

    asked by Courtney W.
  2. algebra

    2a+11=a+5 _____ 3 help 2a+11/3=a+5 is that the question? if it is 2a+11/3=a+5/1, then you cross multiply 3(a+5)=2a+11, distribute the 3, which equals 3a+5=2a+11 so now solve for a , bring them to one side, a=-4

    asked by debbie
  3. socila studies

    what is texas important land form I don't know what you mean by "important" The Texas coastal plain, the Hill country, the western desert, and the Northern high plains, and of course, the Trans-Pecos region of the Rocky Mountains. I suggest you do an

    asked by vicky
  4. social studies

    what is texas important important service industries I don't know what you mean by "important". Major employers of service type jobs are fast foods, cleaning, police, maintenance and repair organizations (automobile, aircraft, building), and state and

    asked by vicky
  5. Science

    HI I went all around the websites and I still did not find a picture of an elephant that is labeled with all it's body parts etc I am uncertain of your real question. Do you have a list of body parts you need to identify?

    asked by QER
  6. Chemistry

    I have an assignment Q A 0.1 mol L-1 water solution of NH4CH3CO2 has a pH of approx 7. Explain this using two equations. I have one equation CH3COO-(aq) + H2O(l) --> CH3COOH(aq) + OH-(aq) What could the other equation be? NH4CH3CO2 is the salt of a weak

    asked by Fiona
  7. science

    if one mole of the compound Al4C3 has a mass of 144g and one mole of carbon has a mass of 12g, calculate the relative atomic mass of the element aluminium. Subtract 3*12 from 144 (ie, 108) Relative atomic mass= (108/4)/12

    asked by smartypants
  8. science

    how many days does it take a person to eat what they weight? Have a go at estimating how much mass you each each day. If your mass is 80 kg, then the number of days would be 80 kg/(mass eaten per day).

    asked by chris
  9. science

    could someone please help me i have to write about the start of life on a extrasolar planet and talk about chemical evolution,, could someone please give me some pointers Is this S103 ECA? yes it is im just need some pointers so that i can do the work in

    asked by bex
  10. intro cal

    the first 3 term of a geometric progression are k-4, 2k-4, 4k+4. what is the value of k? can someone help please! in any geometric progression any term divided by its previous term gives you the common ratio, so .... (2k-4)/(k-4) = (4k+4)/(2k-4)

    asked by Emma
  11. maths

    What is the period of this function? - Maths? y = 5+3sin (pie t divided by 3 + pie divided 2) by definition the period is 2pi/k where k is the coefficient of the "angle" so divide 2pi by pi/3 and simplify, hope you get 6

    asked by claudia
  12. math help

    What is the distance Y Z in metres between the boat and the bouy, to 2 significant figures? A surveyor, standing at an observation point on a cliff top of a height 300m above sea level, can see a boat and a bouy out at sea, both directly in front of him.

    asked by claudia
  13. math

    What is the figure that gives the half-life of the isotope in minutes to 4 significant figures? Exponential regression on a set of data, which gives the amount of atoms of a radioactive isotope remaining after a time X minutes, produced the following

    asked by claudia
  14. maths

    Choose the 2 true statements? A) using Naismith's rule to plan a walk would give different times to walk up a hill as down it, on the same path. B) On a map with a scale of 1:200 000, 5cm on the map will represent 1km on the ground C) On a map with a scale

    asked by claudia
  15. maths

    f(x)=x^3+px^2+qx+6 this formula can also be written in "factorised form" that is, f(x)=a(x+b)(x+c)(x+d) can someone please teach me how to change a funtion into it's factorised form? thanks the following link has some nice step-by-steps illustrations and

    asked by Emma
  16. Phy. Ed

    What are the maximum dimensions of a golf course? Or is there no limit? Apparently there is no limit to the size of a golf course. Check these sites for information about a couple of the world's largest golf courses. (Broken Link Removed)

    asked by Emily
  17. please help - maths

    Data are collected on the average second-hand price of a particular model of car, from back copies of car trading magazines. The model of car was manufactured in 2000. Year 2001 2002 2003 2004 2005 Average price (£) 11015 5920 4123 3171 2587 Taking 2001

    asked by carrie
  18. math

    how do you calculate metric surfaces? not sure what you mean. are you finding areas of surfaces that have metric units? are you converting between units of area in the metric system? give a specific example or problem.

    asked by rachel
  19. algebra

    solve the polynomial y=2x^2-4x+1 For Further Reading algebra - Reiny, Thursday, May 17, 2007 at 10:34pm I am sure neither your text nor your teacher asked you to "solve the polynomial y=2x^2-4x+1 " are you graphing the function, or are you solving the

    asked by Haylee
  20. Algebra

    Please help to find x, y 1. 8x-y=17 6x+y=11 2. 5x-2y=17 2x+3y=3 Question no.1 8x-y=17 6x+y=11 (adding the equation) __________ (-y and +y will be 0) 14x =28 Taking variables to one side x=28 __ 14 14*2=28 therefore x=2 substitute this value of x in

    asked by Tamia
  21. Pre-Algebra

    Please help to solve to find x,y 1. y=7x-3 2. 4x+2y=8 Take the value of y in the first formula and substitute it for y in the second formula. Solve the second formula for x. Once x is found, solve for y in the second formula. Check by inserting both values

    asked by Lee
  22. Predication

    A book that has an exciting introduction and a surprising ending would be the best story for me to read. (Broken Link Removed) Be sure to read the first sentence very carefully -- then read the rest. I think the problem in this sentence is with the linking

    asked by Anonymous
  23. Science

    What kind of joints do not allow movement? A. Hinge joints B. Ball and Socket joints C. Pivot joints D. Fused joints Fused joints. I hope this helps. Thanks for asking. Fused joints. Fused joints

    asked by Stevi
  24. Math Help

    the square root of 3 times the square root of 15 also the square root of 18 times the square root of 3 To multiply square roots: sq rt of z times the sq rt of y It would be the square root of zy The first one is 3x15 = 45 So it's the square root of 45.

    asked by Tina
  25. Science

    When conditions are favorable, certain microorganisms may grow and reproduce in a matter of minutes. True or False?

    asked by Stevi
  26. history

    do you know any website that tells us anything about the ancient greek's landscapes? Already answered -- above. =) I'm sorry. But I'm a different person then LP. :D Your IP address is identical to LP's, so you're either in the same house or the same school

    asked by eunice
  27. ancient worlds

    Does anybody know web(s) for famous landscapes in Ancient Greece? This is 4 a project. Please reply ASAP. http://www.thewordtravels.com/ancient-greece.html Five are listed here. =) Thanks so much. The info really, really, helped me. Once again, THANKZ! :)

    asked by LP
  28. Philosophy

    What is the history of continental philosophy in reaction to Hegelian idealism? I need some help answering this question. I cannot find any information on this. Any help would be greatly appriciated. Thanks. Thank you for using the Jiskha Homework Help

    asked by Marie
  29. Science

    When conditions are favorable, certain microorganisms may grow and reproduce in a matter of minutes. True or False? please reply ASAP. True. I believe it depends on the temperature of the surrounding microorganisms.

    asked by Stevi
  30. Science

    A Spore is a many celled structure. True or False? Thanks. False. A spore is a one-celled reproductive structure.

    asked by LJ
  31. Science

    A new plant, growing from a single leaf, is an example of sexual reproduction. True or False? Thanks. Sexual reproduction involves two sexes. Does that answer your question? I hope this helps. Thanks for asking.

    asked by Marry
  32. Science

    Lack of oxygen in a pond may be a limiting factor. True or False? Please reply ASAP, thanks. Limiting factor for what? For fish and other animal life, this would be true. I hope this helps. Thanks for asking.

    asked by Marry
  33. natural science

    what gas does the sun burn? Thank you for using the Jiskha Homework Help Forum. Here's an interesting site about the sun. The source of the sun's fuel is hydrogen and helium gases. Due to a special chemical reaction, called nuclear fusion, the hydrogen gas

    asked by Celsy
  34. algebra 2

    factor completely 3x^2-14x-24 I do not see the gcf for the problem I am totally lost can some explain please I have several these problems and i need to figure out how to solve them You put 3x^2-14x-24 = (a x + b)(c x + d) Equating the coefficients on both

    asked by CINDY
  35. Science

    Lack of oxygen in a pond may be a limiting factor. True or False? Please reply ASAP, thanks Lack of oxygen in a pond may be a limiting factor. True or False? Please reply ASAP, thanks Please only post your questions once. Repeating posts will not get a

    asked by Marry
  36. science

    A new plant, growing from a single leaf, is an example of sexual reproduction. True or False? Thanks. Please only post your questions once. Repeating posts will not get a quicker response. In addition, it wastes our time looking over reposts that have

    asked by Marry
  37. science

    what are the pros and cons of nuclear energy Since this is not my area of expertise, I searched Google under the key words "nuclear energy advantage disadvantage" to get these possible sources: http://home.clara.net/darvill/altenerg/nuclear.htm

    asked by sarah
  38. economics

    (This homework question was removed due to a copyright claim submitted by K12 Inc.) http://www.google.com/search?q=import+substitution+policy&rls=com.microsoft:en-us:IE-SearchBox&ie=UTF-8&oe=UTF-8&sourceid=ie7&rlz=1I7SUNA Here are various sites that

    asked by stacy
  39. Science

    Usable materials that man can obtain from the physical world are called.... A.Fertilizers B.Renewable resources C. Natural Resources D. Fossil Fuels Please Relply ASAP, thanks.

    asked by Yana
  40. Science

    Usable materials that man can obtain from the physical world are called.... A.Fertilizers B.Renewable resources C. Natural Resources D. Fossil Fuels Please Relply ASAP, thanks.

    asked by Yana
  41. Art

    what are the form and conent in Michaelangelos Creation of man? http://www.google.com/search?hl=en&client=firefox-a&rls=org.mozilla:en-US:official&hs=Xd9&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=form+content+michelangelo%27s+creation+man&spell=1 There are

    asked by suzie
  42. Art

    what are the form and content in Michaelangelos Creation of man? How do you pick out line, balance, shape, color, contrast, texture, space, and proportion to size in this painting. Posted for Guru Blue These sites will give you some information on that

    asked by suzie
  43. science

    cyanobacteria,wich first appeared on earth over 3 billion yaers ago are? a.austrolopithecines b.prokaryotes c.one of the organisms on land d.descendents of primitive plants http://en.wikipedia.org/wiki/Cyanobacteria Read 1st Paragraph

    asked by gabie
  44. Mathematics

    sqrt 6 * sqrt 8 also sqrt 7 * sqrt 5 6.92820323 and 5.916079783 So you can see the steps — sqrt 6 * sqrt 8 = sqrt 48 sqrt 7 * sqrt 5 = sqrt 35 I hope this helps a little more. Thanks for asking.

    asked by Tina
  45. Science

    The diploid cell that result from fertilization is called a(n)___. A. Egg B. Sperm C. Zygote D. Embryo look up zygote, and embryo here: http://www.onelook.com/

    asked by Yana
  46. Science

    momentum What is a kilogram meter per second? vesc=(2GM/R)1/2

    asked by Count Iblis
  47. Solving for distance

    what distance did a car travel if the speed was 75mph and was on the road for 9 Hours? I need to know how I can figure out this question usin g my calculator step by step distance= speed * time.

    asked by Brooke
  48. Thanks everyone for your help

    Everyone on this website thanks for helping me with my research paper.I hope I got a good grade.Everyones advice and websites helped alot.I got it done quicker than I thought I would. That's great to hear. :) Matt We will think really good thoughts for

    asked by Brooke
  49. science

    What is Spread of Effect Spread of Effect is a behavioural science term for the apparent change of errors noted just before or after a reinforced behaviour. Some think it is caused by the anticipation of positive response. For myself, I have only see it in

    asked by Dana
  50. Algebra

    Which of the following represent the equation of the line passing through (6, –10) and (6, –6)? A) x = 6 B) y = 6 C) y = x + 6 D) y = 4x My solution was m = -6 +10 = 4/0 6 – 6 because 4 0ver 0 was the result of my solution I thought answer D (above)

    asked by Sissy
  51. graphing

    Can someone show me how to solve these inequalties for me? I cannot figure any of them out -6 < x and 3 < 6 (Remember this is an "and" statement) -3x < -6 or x + 5 < -2 x - 2 > 2x + 1 or -10 > -2x - 2 First of all, the first problem makes nonsense. The

    asked by mike
  52. pH

    im trying to calculate the pH of a 1.0L soln containing 53.8 g of completely dissociated Mg(CN)2. is this the diss. equation? Mg(CN)2 + water --> MgOH + 2CN^- i don't think i did the problem rite b/c i got 15.7 for the pH. i got 53.8M Mg(CN)2 for the

    asked by christine
  53. Math

    Determine how far sound travels in 55 minutes. Express your answer in feet. You may use 760 mph as the speed of sound. distance=speedsound*time write time in hours, or 55/60 hr You will have to then convert miles to feet.

    asked by Kim Jones
  54. algebra

    evaluate each function for the value specified.fx+x2-7x+10; find (a)f(0),(b)f(5),and(c)f(-2). can any one help me withthis i have not the first clue how to begin here. What you wrote is nonsense. Did you mean f(x)=x2-7x+10 ? If so, f(0)= put zero in for x,

    asked by clueless
  55. science

    Discuss how comets might have a role to play in life evolving on an earth-like extrasolar planet in a distant solar system. can some one please help me out here. If life came to Earth via a comet, wouldn't it make sense to predict that some comet could

    asked by kat
  56. algebra

    you give me the answer but didn't really tell me how you did it so i can figure how to find the other numbers giving. also was just respneding that the problem was true as you said it made nosense. evaluate each function for the value specified. evaluate

    asked by clueless
  57. algebra

    factor 6ab - 8b YOu can factor a 2b out of it.

    asked by Brittany
  58. behavioral science

    Can anyone help me with some of the differences betweenthe heredity and the horomones on the human behavior? This is a very broad question. Are you asking about adolescent behavior? Heredity and hormones certainly play a part in behavior, but environment

    asked by Anonymous
  59. algebra

    Plug in (-1) for x. It will look like this: f(-1) = 4 *(-1) - 3 four times negative 1 equals negative 4, so... f(-1) = -4 - 3. negative four minus three is easiest to figure out with a number line...it equals negative seven. So: f(-1) = -7. And you're

    asked by Stacy
  60. Math

    How do you calculate this problem (55)(38/3)(5280) (55)(38/3)(5280) = (55)(38)(5280/3) You can see that 5280 is divisible by 3 using this trick. Add up the digits of the number and if that is divisible by 3 then the number is also divisible by 3.

    asked by Kim Jones
  61. diversity

    What is the social challenges african americans have to face and find most difficult to overcome In my opinion as a European-American, one of the biggest challenges faced by African-American young people is the bias among some African-Americans against

    asked by Lejora
  62. Math

    The sum of two numbers is 112. The second is 7 more than 4 times the first. What are the two numbers? Am I doing something wrong? I seem to be stuck. x + y =112 (x+7)4y=112 The second equation should be: y+7=4x Should be the 2nd equation. The 2nd one: y is

    asked by Sissy
  63. criminology

    Can someone tell me a policy that is in effect that relates to trait theories? Determine how far sound travels in 55 minutes. Express your answer in feet. You may use 760 mph as the speed of sound.Do I divide,add,subtract or multiply. Check out this site:

    asked by Kg
  64. economics

    (This homework question was removed due to a copyright claim submitted by K12 Inc.) I don't know much about this, so I googled it. I still didn't find a lot, but this idea might help. Note that this is just one idea I saw that made sense to me and I know

    asked by stacy
  65. algebra

    okay i have to find f(a-2) out of this question f(x)=5x-1 were did the a come from. man i am so confused? "a" is a variable. Like "x" is in most equations. So 5(a-2) - 1 Multiply it out from there and simplify. Matt

    asked by clueless