1. science

    Calculated how many grams of methane (CH4) are in a sealed 80 mL flask at room temperature (22ºC) and 780 mm Hg of pressure. Show all your work.

    asked by bob on April 15, 2013
  2. Algebra

    .428571428571 with the digits 4,2,8,5,7,1 repeating indefinitely in that order. What digit is in the 200th place. To the right of the decimal point? Is the answer 8? Please show your work.

    asked by Anonymous on September 3, 2012
  3. math

    useing the rule of 72 estemate how long it will take an investment of $400 to double if it is invested at 4.5%/year compounded monthly. (show work)

    asked by Dane on January 21, 2011
  4. statistics

    The following data lists the average monthly snowfall for January in 15 cities around the US: 20 9 35 46 44 17 32 25 30 14 28 14 9 15 20 Find the mean, variance, and standard deviation. Please show all of your work.

    asked by Tywania on January 30, 2012
  5. Algebra

    Find a counterexample to the statement 4^n + 1 is divisible by 5...how do i show my work for this problem? The example in my book is too confusing it doesnt really go into detail but just shows a table.

    asked by Tracy on April 30, 2008
  6. Chemistry

    Hey guys, been a long time since I have done this. Please show your work. Thanks a lot! How many grams do 3.6 × 10^20 atoms of sodium weigh? Answer in units of g

    asked by Randy on October 25, 2009
  7. Mrs.Sue

    mrs sue i have to go soon can u plzzzz helpppp me i just need ou to answer my questions and show ur work so i can print it and make it a study guide plz

    asked by charolette on May 19, 2011
  8. chemistry

    how would i work out the problem for: a sample of oil has a mass of 65g and a volume of 80.0 ml what is its specific gravity. please show formula. thank you. Mary hornbeck

    asked by mary- please check for accuracy. on February 20, 2011
  9. Chemistry test help please

    How many liters of chlorine as can be produced when 1.96 L of HCl react with excess O2 at STP Show Work A.0.49L B.0.98L C.1.96L D.3.92L

    asked by John on April 22, 2015
  10. Calculus

    Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. y=ln x, y=0, x=1, x=3 Please show the steps in your work, thanks! :)

    asked by Sun on March 27, 2008
  11. science

    A 24.3g sample of a compoud XO2 contains 3.365 x 10^23 oxygen atoms. Determine the molar mass in g/mol of the element X. Show your work.

    asked by Adalaide on August 18, 2013
  12. Pre - CALCULUS

    Find the x-intercepts (if any) for the graph of the quadratic function. 6x2 +12x+5=0 Give your answers in exact form. Show your work.

    asked by Ciara on April 10, 2015
  13. Math - Help with radicals please

    Please show work Simplify rational 1. 4√(a^6 b^13) / 4√(a^2b) 2.√(2x^3 / 49y^4) Add or Subtract 3. x√(75xy) - √(27x^3y) Multiply 4.(√(5) - 5) (2√(5) + 2) Rationalize the denominator 5. √(25x^5 / 3y^2) 6. 5 / 2-√(7)

    asked by Anonymous on February 20, 2013
  14. trig

    use sum or difference identities to find the exact value of the trigonometric function: tan 345 please show work, i cant figure out what im doing wrong!

    asked by Anonymous on November 19, 2009
  15. algebra - Math

    Set up fee is $40.00 per person it is $800.00 rental per month. How many flights must be sold to maximize profit? show work algebraically

    asked by Susan on June 20, 2010
  16. Chemistry

    A 24.3g sample of a compound XO2 contains 3.365 x 10^23 oxygen atoms. Determine the molar mass in g/mol of the element X. Show your work.

    asked by Adalaide on August 18, 2013
  17. Algebra

    Please help ASAPPP!!!! I have no idea how to even start on this! f(x)=9x^3+2x^2-5x+4 and g(x)=5x^3-7x+4. What is f(x)-g(x)? Show all of your steps and wrote your final answer in factored form. If someone could help me work through this problem that would

    asked by Taylor on April 20, 2016
  18. Chemistry

    How much ice (in grams) would have to melt to lower the temperature of 53.4g of water from 65 C to 0C? I know there are more than one step here, I would appreciate an answer that does not do the work for me, but show me how to lay out the problems and in

    asked by Kim on April 26, 2013
  19. physics

    If a freely falling rock were equipped with a speedometer, by how much would its speed readings increase with each second IF it were on a planet where g = 20 m/s2? Show all work leading to your answer.

    asked by allexelle on June 24, 2015
  20. Math

    An invoice of $12,000 is dated April 5. The terms 5/10,n/30 are offered. Find the amount due if the discount is earned. Show your work.

    asked by Allie on October 12, 2012
  21. physics

    which of the following properties of a sound wave determines its pitch: wavelength, speed, amplitude, or frequency? Plese show work, Thank you, Silly

    asked by silly on May 2, 2011
  22. math

    Solve the following equation: 4/7 x = -16 A)x = 42 B)x = -28 C)x = 23 D)x = -24 Solve the following equation. 4s+13+s=2s+40-6 A)s = 12 B)s = -10 C)s = no solution D)s = 7 You train for the Olympics 120 minutes each day. How many days have you trained when

    asked by .. on October 7, 2016
  23. Help Please Stat-Math

    According to an airline, a particular flight is on time 75% of the time. Suppose 140 flights are randomly selected and the number of on time flights is recorded. Determine if you should use the Binomial model or Normal model to solve this problem. show

    asked by MELISSA on April 13, 2013
  24. Programming logic and design

    Using python write a program that does the following: •Create the logic for a program that calculates and displays the amount of money you would have if you invested $3000 at 2.65 percent interest for one year. •Create a separate method to do the

    asked by Christina on April 17, 2015
  25. Chemistry(Please check answers)

    1) The Ka for acetic acid is 1.8e-5. What is the pH of a 3.18M solution of this acid? I did 1.8e-5 = x^2/3.18 x=sqrt 1.8e-5 X 3.18 = 7.56e-3 pH=-log(7.56e-3) = 2.12 The pH is 2.12 2) At 25 degrees celsius, the pH of a 1.75M NaCN solution (the Ka for HCN is

    asked by Hannah on April 1, 2012
  26. biology

    Which of the following are three common characteristics of echinoderms? a. tube feet, circulatory system, body symmetry b. marine-dwellers, endoskeletons, water-vascular system c. bilateral symmetry, ossicles, respiratory system d. mouths, protosomes, body

    asked by Lily on November 15, 2010
  27. chemistry

    X is a solution,of dibasic of H2X. G is a solution containing 1.00g of NaOH in 250cm3 of solution . 24.60cm3 of solution F required 25.00cm3 of solution G . From your result and information provided above. (I)concentration of G in mol/dm3 (ii)

    asked by john kelechi on May 25, 2014
  28. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous solution of ethanol, what

    asked by Anonymous on February 10, 2011
  29. chemistry

    What is the percent by mass of 3.55 g NaCl dissolved in 88 g H2O? 2. A solution is made by adding 1.23 moles of KCl to 1000.0 g of water. What is the % by mass of KCl in this solution? 3. If you have 100.0 mL of a 25% aqueous solution of ethanol, what

    asked by Anonymous on February 10, 2011
  30. Math-reasoning

    A farmer wants to build a straight fence with a post every 7 feet. Each end has a post. For a fence that is 49 feet long, how many posts will the farmer need? Describe the quantities given Tell how you can show the relationships in the problem Solve and

    asked by Kennedy on May 23, 2016
  31. Calculus

    Hello, my question is the following: The derivative of f(x) = ln(x) is given by f'(x) = 1/x. Find an equation of the tangent line to the graph y = ln(x) that passes through the point (0,0). So if I go through this using the typical method I use I have the

    asked by Joshua on September 27, 2014
  32. General Chemistry

    The photogenic work function of a metal is the minimum energy needed to eject an electron by irradiating the metal with light. For calcium, this work function equals 4.34 x 10^-19 J. What is the minimum frequency of light for the photoelectric effect in

    asked by Kat on January 13, 2008
  33. Chemistry

    What is the pH of a solution prepared by dissolving 1.23g of 2-nitrophenol (FM 139.11) in 0.250 L? Well so, i calculated the no.moles of 2-nitrophenol, and divided it by 0.250, to get the molarity which was 3.53E-2. Since the molar ratio of dissociation is

    asked by John on August 31, 2014
  34. Computers

    I know that there are a whole bunch of proxy servers out there but I can't seem to find one that will help me get around the system. I am wanting to use this proxy address to help me access school resource websites, but they're all blocked. HELP!!!! Please

    asked by Anonymous on October 24, 2012
  35. Chemistry

    A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this

    asked by Paul on February 1, 2011
  36. Chemistry

    A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this

    asked by Paul on February 1, 2011
  37. Chemistry

    A student makes a solution by dissolving 55.8 grams of potassium hydroxide in 875.0 grams of water. The resulting solution has a density of 1.07 grams per milliliter. 1. What is the volume of this solution? 2. Calculate the % concentration of this

    asked by Paul on January 31, 2011
  38. Finance

    You want to start a summer business to earn money. What will you do? You have to consider how much money you can afford to invest in this business, how much it will cost you to make each item, and how much you’re going to charge for each item. Research

    asked by EmDaWgYy on December 19, 2018
  39. Precalculus

    Solve (log x)^2 = log x Also, when will their be a possibility that an equation will have an extraneous solution? Like if you got two solutions for a log equation, will a negative solution for x automatically be extraneous?

    asked by marcus on November 20, 2012
  40. Chemistry

    What is true about a system in chemical equilibrium? No reactants remain in the system. There are no products in the system. The amount of product equals the amount of reactant. The amount of reactant changes, but over time remains about the same.

    asked by Viola on April 23, 2012
  41. social studies

    Which best illustrates the Socratic method? A. A teacher gives a lecture while students take notes. B. Students read a book independently and write a summary. C. Students work in groups to complete an art project. D. The teacher asks a series of questions

    asked by esksjnjsd on February 25, 2019
  42. World History

    Which best illustrates the Socratic method? 1.A teacher gives a lecture while students take notes. 2.Students read a book independently and write a summary. 3.Students work in groups to complete an art project. 4.The teacher asks a series of questions and

    asked by triggatre on September 24, 2018
  43. Science

    You need to separate a mixture of iron filings, sand, and salt. Which of the three would be easiest to separate first and what method would be best? A) The salt would be easiest to separate, and using a magnet would be the best method. B) The iron filings

    asked by I Dont Matter on January 2, 2018
  44. Chem

    A few classmates and I were arguing about a problem we had to do for homework. The problem states: Limestone, CaCO3, when subjected to a temperature of 900 degrees C in a kiln, decomposes to calcium oxide and carbon dioxide . How much heat is

    asked by Jess on February 1, 2007
  45. Algebra

    Graph the solution set of the system of inequalities and give the exact coordinates of the intersection points of the related equations: y>x^2 -8 X+y≤1, The closest points I'm getting is (-2.5,-1.8) and (2.5,-1.5) but I feel like they're incorrect

    asked by Jen on November 24, 2017
  46. Math

    Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y

    asked by Heather on March 21, 2015
  47. biology

    Most automobiles have water-cooled engines. What must be true about a solution that can replace water in the cooling system, such as antifreeze? I know this is the second time I'm posting this question, but it's been hours and still no one's responding.

    asked by lamiya on September 12, 2009
  48. pre calc

    Find the values of b such that the system has one solution. x^2 + y^2 = 36 y= x+b and then they give me an answer box b=_________ (smaller value) b=_________ (larger value) i have absolutely no idea how to even begin this and what they are asking. could

    asked by gabs on June 7, 2011
  49. Math

    Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y

    asked by Heather on March 21, 2015
  50. calculus

    how do you solve the integral of 1/[(square root of x)(lnx)] from 2 to infinity? i did the p- integral theorem with 1/square root of x and got it to be a divergent integral. however i was told this was the wrong way and that i should do it by integration

    asked by kathryn on August 25, 2009
  51. Physics

    A block on a spring moves in SHM with amplitude 0.23 m and period 3.8 s. The mass of the block is 2.1 kg. What is the total energy of the system? Can someone please take me step by step and show me what my answer should be? Thanks!

    asked by Kate on June 24, 2012
  52. physics

    Please help. If you need the figure, let know how I can show you and I will do it. A particle moves in the xy plane (see the figure below) from the origin to a point having coordinates x = 7.00 m and y = 4.00 m under the influence of a force given by F =

    asked by joy on March 13, 2018
  53. Algebra 2

    I am stuck on this problem that I have tried to solve so many times! The question is:The length of a rectangle is four more than twice the width. If the perimeter of the rectangle is 32 cm, what are the length and width of the rectangle? Here is my work:

    asked by Mick on October 17, 2015
  54. English

    Hello. I will really appreciate some help. 1)Which preposition is correct in the context "to work at/in a company"? 2)Is it "a vacancy at" or "in our company"? 2)Which is the correct word order in the following word-group: "British TV dance show" or

    asked by Ilma on April 11, 2012
  55. Chemistry-kD

    A chemical "X" is included in a water in a pond. 1)5dm3 of water from the pond is taken and is mixed with 200cm3 CHCl3.Then CHCl3 layer is taken out separately and left to vaporize. Then the remaining mass of X is measured.There was 10mg. 2)The remaining

    asked by Shenaya on May 29, 2017
  56. math retry

    Is the answer to log sub a 2 = .4, log sub a 3 = .5, log sub a 5 = .8 is it 2.9? Is the answer to log sub 5 (2x+3) = 2 is the correct answer 11? Is the solution to 8^x=16^x+2 is the solution 2? Are you guessing? Something is wrong. Let me see your work.

    asked by Sara L. on January 13, 2007
  57. Math

    Please show me how to set this up: A local citizen wants to fence a rectangular community garden. The length of the garden should be at least 110ft., and the distance around should be no more than 380ft. Write a system of inequalities that models the

    asked by Mary on February 3, 2012
  58. Organic-Chem Help

    You wish to purify by distillation a material that has a boiling point of 205 C and reacts with air but this material will decompose if heated above 150 C. How would you set up the system to distill this material? Show steps Pleaseeeee!!!!!!!!!! Thank

    asked by Tanya on September 12, 2014
  59. Chemistry-pH

    Question: v cm3 of a 0.2 M HX solution and v cm3 of 0.1 M KOH solution is mixed.pH of the final solution is 5.3 1)Find ka of HX 2)Find the moles of NaOH and HCl should be added respectively,for the pH of 1dm3 of the solution to increase and decrease by 1

    asked by Shenaya on May 31, 2017
  60. chemistry

    To create a 0.1 M carbonate buffer pH = 10.2. You choose to use a combination of HCO3- / CO32-. This buffer system has pKa = 9.9.   a) Calculate how much you need to weigh in each of the sodium salts, NaHCO3 and Na2CO3, to create 1.0 L carbonate (with

    asked by Maria on September 9, 2016
  61. Advance Accounting

    How do I prepare a consolidated elimination worksheet when the parent purchases all of subsidiary's bonds on open market?

    asked by Martha on February 20, 2011
  62. sociology

    What types of situations or examples that can result in the elimination of functionalist theory when considering the social institution of the family?

    asked by Sharon on May 7, 2011
  63. discrete mathematics

    how many baseball games of single elimination must be played by 421 teams in a tournament before a winner is determined

    asked by confused on October 3, 2013
  64. finance

    BBA307: Finance Exercise 8A Assignment 8.1 Assignment 8.1: Capital Budgeting Application You have just graduated and one of your favorite courses was Financial Management. While you were in school, your grandfather died and left you $1 million. You have

    asked by nancy on June 28, 2012
  65. Chemistry

    How many grams of NaNO2 must be added to 1 liter of 1.00 M HNO2 solution in order to prepare a buffer solution with pH = 4.14? pH = 3.14? My work: ka = pH(buffer ratio) 4.5 * 10^-4 = 1.000*10^-4.14 (x M of base/1.00 M of acid) x = 6.21 6.21 M = (6.21

    asked by Maddy on February 21, 2016
  66. Algebra

    Suppose a triangle has angles A,B, and C. Angle C is the right angle. Find the measures of the other sides to the nearest whole number. < means angle symbol. 1.BC=9,m

    asked by Casey on April 1, 2008
  67. chemistry

    A potassium permanganate solution containing 1.58 g of KMnO4 per liter is added into 5 ml of an acidified iron (||) sulfate solution .Decolorizing of KMnO4 solution ceases when 10ml of the solution has been added. Calculate the mass of FeSo4.7H2O which has

    asked by angy on January 17, 2016
  68. Chemistry

    3. 25.0 mL of a 0.50 M solution of acid HA was combined with 25.0 mL of a 0.50 solution of base MOH in a calorimeter with a calorimeter constant of 13.5 J/ C. The initial temperature of the solution was 23.3 C and the maximum temperature was 34.7 C. The

    asked by Kim on April 16, 2013
  69. Nutrition

    in 200 to 300 words, the path food follows through the digestive system and how digestion occurs in each of the following parts of the digestive system. Be sure to include descriptions of other organs or components of the digestive system, including: o

    asked by Bev on September 25, 2008
  70. geometry

    User: Courtney Thompson In Course: Geometry V8 ( 2167) Instructor: Tracie Morgan -------------------------------------------------------------------------------- WARNING: You must not leave this exam form! If you try to click back into this exam again

    asked by courtney thompson on December 31, 2008
  71. Physics

    i41 tinypic com/2qna74k png (add the periods) For the vectors in the figure, with a = 6.4, b = 2.5 and c = 6.87. Calculate a(dot)b calculate a(dot)c calculate b(dot)c I got 0 for a(dot)b but the same method (ac*cos(theta)) does not work for the other two,

    asked by John brown on January 26, 2016
  72. Math

    Jamie is saving money to buy a new video system. So far, he has saved $16, which is 15% of the total cost of the system. What is the total cost of the system?

    asked by Amy on January 27, 2015
  73. Chemistry

    Calculate the pOH, pH, and percent protonation of solute in the following aqueous solution. 0.059 M quinine, given that the pKa of its conjugate acid is 8.52. Please show me how to do it and not just the answers. Thanks!

    asked by Alania on October 29, 2010
  74. Chemistry

      show that the time dependent expectation value for the position x and momentum p match the solution of newton classical equation for HO drive the amplitude of vibration?

    asked by lolo on March 16, 2015
  75. Math

    1. Solve cos x(cos x - 1) = 0. Ans: pi/2 + n pi, and 2 n pi 2. 2 cos x - 1 = 0 Ans: x = pi/3 + 2 n pi, and x = 5pi/3 + 2 n pi 3. Solve 4 sin^2 x - 3 = 0 Ans: x = pi/3 + n pi, and 2pi/3 + n pi 4. What is one solution to (sqrt2) sinx + 1 = 0? Ans: x = pi/6

    asked by Anonymous on October 18, 2015
  76. Maths

    Brent's normal wage is $672 for a 40 hour week. He worked overtime and earned $873.60 in one week. How many hours of overtime did he work if he was paid double time for the overtime worked? Method please

    asked by Musibaba on March 23, 2011
  77. Algebra

    Hello again! I've got two questions I'm stuck on in an algebra worksheet. 1. Solve the equation: 2𝑦 + 5 = 1/2(4𝑦 + 8) (I really don't know how to solve these correctly, I've tried everything.) 2. The density of an object is calculated using the

    asked by Rocket on October 20, 2016
  78. alg.

    Solve. (If there is no solution, enter NO SOLUTION.) y= x^2-x-4 y=x+4 (x, y) = ( , ) (smaller x-value) (x, y) = ( , ) (larger x-value) x^2 + y^2 =10 x+y=4 (x,y)= ( , ) smaller value (x,y)= ( , ) larger value

    asked by HELP on April 22, 2014
  79. programming logic

    The Banking e-Teller system allows bank customers to perform ATM transactions from their cell or smart phones. BET will allow customers to check balances, make remote photo capture check deposits, and perform balance transfers to their checking or savings

    asked by david on January 22, 2013
  80. Science/Computer Programming

    The purpose of this exercise is to practice reading code and recognizing the traversal patterns in this chapter. The following methods are hard to read, because instead of using meaningful names for each variable and method, they use names of fruits. For

    asked by Anonymous on February 8, 2019
  81. Art

    artists make shapes in the background smaller than shapes in the foreground to communicate their distance from the viewer. how else might a landscape artist show shapes in the back ground to depict their distance from the viewer? a. show shapes with bright

    asked by bunny64 on April 1, 2016
  82. Chemistry

    A 0.60 L portion of a 1.2 M AgNO3 solution is mixed with a 0.3 L potion of a 1.2 M Na2CrO4 solution in an constant pressure calorimeter. Upon mixing, the solid Ag2CrO4 is formed and the heart released is 48.2 kJ. The specific heat of the solution is 4.18

    asked by Kyo on June 9, 2010
  83. Calc Help

    q=(1000/p+1)^2 - 1 find q' Please help. Question on review sheet. I will be glad to help you, or critique your work. What do you think the way to solve it is>

    asked by Evan on May 1, 2007
  84. Calc

    how do i begin to solve this? integral of (1/x^2)sec(1/x)tan91/x)dx I tried substituting tan(1/x) for u but i couldn't get it to work...

    asked by Katie on February 27, 2010
  85. Algebra 1

    3r-5s=-35 2r-5s=-30 multiply equation 2 by -1 then add the two equations. s will cancel and you can solve for r. Post your work if you need further assistance.

    asked by Candice on January 18, 2007
  86. math

    my daughter is working on 5n + 2n - (3-10N) can someone walk me through how to solve problems like this I have not been in school in over 20yrs. I think you have to work () first? but really do not know HELP please thank you

    asked by kevin on September 13, 2012
  87. Math

    I cannot figure this out I keep getting the order pair(1.24,-3.44), but it does not work when I check. Can you help me? 5x+5y=-11 7x-3y=19 The other oneI needed to solve is this Question: 4y+3y-35...is that right?

    asked by shelley on December 20, 2009
  88. math

    how do i solve 8 times 493 using distributive property. then draw an array showing work

    asked by lisa on November 30, 2010
  89. Chemistry HELP!

    In order to standardize a KMnO4 solution, 0.3498 g Na2C2O4 was dissolved in 30 mL water and 15 mL 3.0 M H2SO4. The KMnO4 solution was added to the Na2C2O4 solution until a pale pink color persisted. The titration took 29.5 mL of KMnO4 solution. What is the

    asked by Prue on May 6, 2013
  90. Chemistry HELP!

    In order to standardize a KMnO4 solution, 0.3498 g Na2C2O4 was dissolved in 30 mL water and 15 mL 3.0 M H2SO4. The KMnO4 solution was added to the Na2C2O4 solution until a pale pink color persisted. The titration took 29.5 mL of KMnO4 solution. What is the

    asked by Prue on May 6, 2013
  91. chemistry

    Lead iodide is a relatively insoluble compound. It can dissolve from the solid phase into the aqueous phase with a Keq of 0.00027. If the concentration of lead iodide in the aqueous phase 0.125 M, then: a. we need more information to determine the progress

    asked by danny on February 28, 2015
  92. Chemistry

    A few questions I don't really get and need to see the work for A 50.0 mL sample of 0.55 M benzoic acid, C6H5COOH, a weak monoprotic acid, is titrated with 0.51 M NaOH. Calculate the pH at the equivalence point. Ka of C6H5COOH = 6.5 multiplied by 10-5.

    asked by Dubs on April 22, 2010
  93. chem

    What volume of a 0.2 N NaoH solution do you expect to use in order to titrate 25ml (sample out of 250ml) of a 0.200 N oxalic acid solution? heeeelp! Equation is H2C2O4 + 2NaOH==> 2H2O + Na2C2O4 I assume that is 25.00 mL H2C2O4. milliequivalents(meq) NaOH =

    asked by Melba on September 26, 2006
  94. Physics

    Collapsible plastic bags are used in hospitals for infusions. We want to use such a bag to infuse a electrolyte solution into the artery of a patient. For this we mount the bag at a height h above the arm of the patient. Assuming that the particular gauge

    asked by Sam on November 25, 2009
  95. Algebra 2 Help!

    1.) Simplify the expression. [sqrt3 + 2i][sqrt3 - 2i] 2.) Solve using the square root property. (y - 4)2 = -18 3.) Rewrite the the function in vertex form. You may use completing the square or an alternate method. f(x) = 5x2 - 10x + 3 4.) Use the

    asked by Lori on February 28, 2014
  96. Math - derivative of sinusoidal (check + help)

    h(t) 0.6cos(2t) + 08 sin(t) h'(t) = v(t) = -1.2sin(2t) + 0.8cos(t) find the vertical displacement when the velocity is 0.8m/s how do i solve v(t) = 0.8m/s I tried the normal way by equating and factoring, however two answers are obtained and the second

    asked by Farah on November 28, 2010
  97. Physics/Math

    A single force acts on a 5.0 kg particle-like object in such a way that the position of the object as a function of time is given by x = 3.0t - 4.0t 2 + 1.0t 3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to

    asked by Technoboi11 on March 3, 2007
  98. math

    This was on my test and have a few more question that is from my test. 18.The Sum of five unequal natural numbers is 90. The second largest of these five numbers can be at the most? A.19 B.41(41 is the right answer) C.44 D.43 E.42 please show work. 22.In

    asked by Mat on July 30, 2014
  99. Math

    Alyssa is a chemist with Gemco Pharmaceutical Company. She needs to prepare 12 ounces of 9% hydrochloric acid solution. The only solution she currently has available are 4% and 12% hydrocholoric acid. How much should she use of each solution to obtain the

    asked by John on March 9, 2011
  100. science

    A solution of trioxonitrate(V) acid contained 0.67g in 100cm^3. 31.0cm^3 of this solution neutralized 2.5cm^3 of a sodium trioxocarbonate(IV) solution. calculate the concentration of the trioxocarbonate(IV) solution.

    asked by Anonymous on November 23, 2018

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