Posts by Amanda

Total # Posts: 2,621

  1. Biochem

    We will need 0.5L extraction buffer with 25 mM HEPES, 1 mM EDTA, and 1 mM DTT. Please calculate how many grams of each solute are needed. (HEPES 238.3; EDTA 292.2; DTT 154.2)
  2. small engane

    FIGURE A-9—This photo should be used to answer Question 15. 15. Two small engine technicians are disassembling the engine shown in Figure A-9. After observing the engine components, both technicians say that this engine has a splash-type lubrication system. Technician A ...
  3. Physics

    Identical point charges of +2.9 µC are fixed to three of the four corners of a square. What is the magnitude of the negative point charge that must be fixed to the fourth corner, so that the charge at the diagonally opposite corner experiences a net force of zero?
  4. Physics

    A hydrogen atom has a diameter of about 10.1 nm. Express this diameter in meters.
  5. Introduction to Physical Science

    thank you getting the hang of this
  6. Introduction to Physical Science

    How do you calculate the wavelength of the radio waves that are produced is 561 m, when electrons on a radio broadcasting tower are forced to oscillate up and down an antenna 535,000 times each second.
  7. economics

    the south african government is not providing enough welfare or subsidies to poor and underpriviledge?
  8. Algebra 1-Math

    There's a table that says Company A charges $0.36 plus 0.03. And Company B charges $0.06 per minute. The question Im having problems with are: How long is a call that costs the same amount no matter which company is used? Be sure to show your thinking?
  9. vocabulary

    ___________definitions are subject to individual interpretation.
  10. algebra for business

    As an entrepreneur, there are going to be many decisions that you need to make, such as the price to charge your customers for your goods and services. You have just graduated from college and recently opened a specialty pizza restaurant. Based on surveys conducted in your ...
  11. geometry

    A cross country race course on flat ground has runners heading from point A for 3.5 km on a bearing of 047degT to point B. From point B they turn and run for 2.8 km on a bearing of 342degT to point C. They then run back to point A. Determine the Distance from C back to A.
  12. Statistics

    If 1000 raffle tickets were sold for a TV prize that is worth $275 and a ticket number is drawn to determine the winner, what is the expected value of the raffle?
  13. Trigonometry

    solve for all possible x in [0,2pi): (cscx+2)(cscx-√(2))=0
  14. Math

    P(7<x<9) when mu=7
  15. Math

    If P(F)=0.3, P(E or F) =.65 and P(E and F)=.15, find P(E)
  16. Applied Geometry maths

    How would I find out how far away from the base of the tower she was when she made her first measurement of 15deg20'
  17. Geometry

    40. Find the surface area of a conical grain storage tank that has a height of 42 meters and a diameter of 20 meters. Round the answer to the nearest square meter. (1 point) 3,028 m2 3,971 m2 1,357 m2 1,671 m2
  18. math

    .72222
  19. Writing help!

    1.In the bitter cold, (he, him) and Dad struggled to save the orange crop. My answer:he 2. (Her and me, She and I) have joined the Shutter and Lens. My answer:she and I 3. Phil showed Danny and (I, me) his butterfly collection. My answer:me 4. Bert warned Hank and (I, me) ...
  20. Writting

    Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the publisher that the book is well...
  21. Economics

    Explain the difference in prices for each of the following pairs of goods in terms of the laws of supply and demand: (a) natural diamonds and zircons (human-made diamonds), (b) a loaf of bread baked today compared with day-old bread, (c) roses in January and roses in June. ...
  22. Writting

    Persuasive Writing Assignment: Imagine that you are an agent who is interested in publishing new authors. Choose any book you like and present the book to a publisher in New York. You want to be the person responsible for putting the book on the shelf. You should convince the ...
  23. L.o

    Human or environmental problem under substance abuse. The impacts
  24. Algebra

    x-14/x-1=4-2x/x-1
  25. math

    oh yeah it says to simplify but I have no clue at all as to how to do this it is a complex number problem I think does anyone know how to do this?(im the one that posted the question)
  26. math

    -10i(5+8i)
  27. math

    im not really sure but maybe itslike a month because the way I put it in my calculator Is 1200/0.07=17142.85714 but im not good at math so idk. I tried at least
  28. science

    what may happen to an ecosystem if nonliving factors change or if one more populations are removed from or added to the ecosystem?
  29. Math

    Solve. 10/(3x) + 4/3 = (7 + x)/2x A) x = 1/3 B) x = 17/5x C) x = 1/5 D) x = 1/6 help??
  30. math

    a football team gained 12 yards on one play, lost 40 yards on another and gained 34 yards on the last play of the first half. they had already gained 345 yards during the half. what was the total yardage gain for the first half?
  31. History

    According to King, how did the Vietnam War affect U.S. policy at home? Please I really need Help i'm taking a test!
  32. algerbra

    solve the equation step by step list each step along with the property you used during that step -5*1*11*4
  33. math

    what is a verbal rule in math?
  34. Math

    me to
  35. Life science, business,maths literacy

    if you can change maths lit 2pure you can becm social workr
  36. Life science, business and maths literacy

    my name is amanda and am doing grade 12 at school am doing business,life sciences,geography and maths lit so what i want to know is the career that is suitable for these subjects
  37. Math

    THANKS!! CONNEXUSS STUDENTS UNITEE
  38. Chemistry

    What mass of sodium oxide is produced from 4.23 grams of sodium and 20 liters of oxygen gas?
  39. Chemistry

    How would you know how to do this problem without knowing Slater's rule? we've yet been taught that rule so I'm not sure how else I would figure it out.
  40. 7th Grade Social Studies

    THIS QUESTION HS BEEN GOING FOR 3 YEARS LOL THANKS GUYS FOR THE ANSWERS
  41. 7th Grade Social Studies

    mudda answer for u is right i swear i just took the test and got 100%
  42. science

    Do your own work please
  43. science

    can you describe the process of cellular respiration.include the words:sugar,energy,carbon dioxide,and water
  44. math

    and what would 0.1875 be as a fraction?
  45. math

    can someone tell me what would 0.0625 be as a fraction?
  46. Chemisry

    Why wouldn't it be KBr? Why are the twos added? How come its not just K + Br ==> KBr since their charges cancel out? Help!
  47. AP chemistry

    1). In a titration 20 mL of 0.100 M of HCl is added to 50.0 mL of 0.150 M of ammonia. A). What is the pH of NH3? B). What is the pH of the resulting solution? HELP :(
  48. Algebra

    So its geometric sequence.
  49. Algebra

    His answer is totally wrong. each term is is being multiplied by 2.
  50. 4th grade math

    there are 12 inches in a foot so 14x12=168
  51. socials please check

    i believe 5
  52. Chemistry

    D the Keq expression of the 2nd one is = to (1/the first Keq expression)^(1/2) so take the answer of the first Keq, 5.4x10^13 and put it in that equation (1/(5.4x10^13))^(1/2)=1.36x10^-7=1.4x10^-7
  53. Chemistry

    hydronium is [OH-] ions, so you looking for the Ph that is most basic, which is your highest number 12.6
  54. Socials please check my answers

    that's correct
  55. math

    1.0425^12? if so the answer is 1.6478
  56. 12Chemistry

    useing them maybe.. but i don't think they would bond them.. there specialty is teeth.. i only know about pharmacy because that's my intended major next year
  57. 12Chemistry

    pharmacy, compounding not retail
  58. Math

    greater because theoretical would be 40 of 80 since there are 2 choice (heads or tails)
  59. math

    # of pennies/# of all coins 12+6+4+8=30 12/30=2/5
  60. math ALG 2!

    i've answered like 10 of these for you... you should be able to figure out how this works by the past problems if you really don't understand the process
  61. math ALG 2!

    38900
  62. math ALG 2!

    x10^6? if so.. 4,250,000
  63. math ALG 2!

    scientific notation helps make very large or very small numbers easier. for very large numbers you move the decimal place as many spaces to the left to leave you with one # on the left. you then take the # of spaces you moved and times it by 10^that number. You do the same for...
  64. math ALG 2!

    2.1x10^-7
  65. math ALG 2!

    7.4*10^6
  66. math ALG 2!

    2.3*10^7 you move the decimal place over till you have a number between 1 and 10 you then times it by 10^ number of spaces you moved over
  67. Math

    5b+9m=150.5 9b+5m=175.7 if you add them you have one equation. 14b+14m=326.2 14(b+m)=326.2 b+m=23.3 b=23.3-m sub. this back into one the original equations 9(23.3-m)+5m=175.5 209.7-9m+5m=175.5 -4m=-34.2 m=8.55 Plug that into the other equation 5b+9(8.55)=150.5 5b+76.95=150.5 ...
  68. chem

    sorry read it wrong, doing this now in chem
  69. chem

    PH=-log(ka)+log(base/acid) 4.8=-log(1.8*10^-8)+log(x/.15) 4.8=7.7447+log(x/.15) -2.9447=log(x/.15) .001135=x/.15 x=1.875*10^-4
  70. AlgebraB-2

    1. what graph? 3. -2x2-4 is 4 units below -2x2 4. wich func.?
  71. Calc

    f(x)=2ln(x^2+3)-x Domain [-3,5] how do i find the absolute maximum value of this?
  72. Algebra

    Angel 4 was c 39 48 57 not b
  73. math mrs sue please help

    Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ...
  74. Algebra 1

    Find the property of the real numbers which will complete the argument below: 1. Zero is not a positive number. 2. Choose x as the smallest number. 3. The ________ property tells us that _________. 4. Therefore, between x and 0 there will be a third number, smaller than x. 5. ...
  75. english

    Dirty idea nerve
  76. eng1511

    Need points so I can write an argumative essay
  77. eng1511

    The sure solution of unemployment is a better quality of education
  78. ENG1511

    Where is the passage cos u were suppose to copy n paste it
  79. Math

    ln24 - ln6
  80. Pre-Algebra

    1. D clustering 2.a postive 3.d none of these 4.b linear 100% pass ! Hope this help!
  81. ENG1511

    I wanna write 2 but have no clue where to start
  82. World History

    History and Geography Activity 12 what page is this on?
  83. College Algebra

    Write the equation of the circle in standard form. Find the center, radius, intercepts, and graph the circle. x^2+y^2+16x-18y+145=25
  84. English

    Thanks for you your help.
  85. English

    choices...curtail,devastate,digress,incentive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity, so now he welcomes the _______s of an exercise program. 3,4. The company decided to ...
  86. English

    I don't know what I think that is why I am asking for help !
  87. English

    Here is my choices...curtail,devastate,digress,inceantive,incorporate,indispensable,intermittent,rigor,squander,succumb here is the sentences: 1,2:Duane feels he ____(e)d too many years in inactivity,so now he welcomes the _______s of an exercise program. 3,4.The company ...
  88. english

    Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he's benched. as if he's prode of causing such turmoils. In fact,although he's a great player, the coach is pondering kicking...
  89. English

    The little girl was so___ after her illness that her parents carfully____(e)d fattening meals that were sure to arouse her appetite. Willie is a ________ on our school. Not only does he start fights with opposing players on the basketball court, but he also _______s after he&#...
  90. english

    After the bully struck him, Jules wanted to________ by throwing a rock, but he had______s about doing anything so dangerous.
  91. english

    What is the adjective in the sentence "The red truck was parked behind the garage"? A. red B. truck C. behind D. parked
  92. math

    6x=-36
  93. PHYSICS HELP!!

    3.) Draw a free body diagram of a boat being pulled at an accelerated rated by a truck down a highway.
  94. PHYSICS HELP!!

    #2.) Draw a free body diagram for the following situation: a.) A 0.15 kg running shoe is pushed to the right, with a constant velocity, across a wet concrete floor with an applied force of 3.5 N. b.) Calculate the normal force exerted by the concrete onto the running shoe.
  95. PHYSICS !!!HELP

    #1.) If the force of gravity on a human is 539 N determine the mass of the human.
  96. Math

    An airplane is flying due west at a velocity of 100 m/s. The wind is blowing out of the south at 5 m/s. What is the magnitude of airplane's resultant velocity?
  97. Physics

    During the second stage of a rocket launch the rockets upward velocity increases from 980 m/s with an average acceleration of 33 m/s (upward). How long did the acceleration last?
  98. Physics

    A boat which travels 100 km (N), then 40 km (N), and finally 80 km (S). The entire trip takes 6.5 hours. A.) Calculate the total displacement of the boat B.) calculate the velocity of the boat
  99. Physics

    In the human body, blood travels faster in the largest blood vessel, the aorta than in any other blood vessel. Given an average speed of 30 cm/s, how long would it take the blood to travel 5 cm?
  100. Physics

    Classify the following measurements as scalar of vector quantities. A.) 15 s B.) 4.2 m ( up) C.) 100 km/h (S) D.) 2.8 kg
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