1. english

    can u pz edit this? and plz add more if have any info to add but jus like 2-3 sent. no more than that With the boom in Information Technology and its accessibility at one's doorstep, Internet has become advantageous for the working mothers. They can set up

    asked by navroz on January 17, 2010
  2. math

    using problem 17-21 calculate the first 2 years depreciation assuming the units of production method. this machine is expceted to produce 120,000 units. in year 1 it produced 19,000 units and in year 2 38,000 units problem 17-21 Jim company bought a

    asked by Anonymous on November 17, 2011
  3. math

    using problem 17-21 calculate the first 2 years depreciation assuming the units of production method. this machine is expceted to produce 120,000 units. in year 1 it produced 19,000 units and in year 2 38,000 units problem 17-21 Jim company bought a

    asked by Anonymous on November 14, 2011
  4. Statisitcs

    I have given you the information from 2-4 in hopes to help with the answer for #6.. Thank you! 2. Calculate the mean and standard deviation of the probability distribution created by rolling a die. Either show work or explain how your answer was

    asked by Hope on October 6, 2011
  5. english check

    Treat the Earth and all that dwell thereon with respect. Remain close to the Great Spirit. Show great respect for your fellow beings. Work together for the benefit of all Mankind. Give assistance and kindness wherever needed. Do what you know to be right.

    asked by anon on January 23, 2015
  6. Socials

    A few days ago I posted a question about an immigration diary during the great migration period(I will link it in a comment below) in which Ms Sue and Reed replied with some tips- thank you. I am starting to write some of the diary and I still have a few

    asked by Lily on February 24, 2015
  7. Statistics: Regression

    The June 1997 issue of Management Accounting gave the following rule for predicting your current salary if you are a managerial accountant. Take $31,865. Next, add $20,811 if you are top management, add $3604 if you are senior management, or subtract

    asked by Brad on October 10, 2012
  8. Algebra 1 (Reiny)

    Will you please explain the steps I must take in order to graph these linear inequalities? Graph each system of linear inequalities. Give two ordered pairs that are solutions and two that are not solutions. 1. y < 2x - 1 y > 2 2. x < 3 y > x -2 3. y => 3x

    asked by Victoria on January 9, 2014
  9. Physics

    A weight of 31 N is located a distance of 10.8 cm from the fulcrum of a simple balance beam. At what distance from the fulcrum should a weight of 17 N be placed on the opposite side in order to balance the system?

    asked by Anonymous on July 7, 2014
  10. algebra

    Layla wants to buy fish, chicken or some of each. The fish cost $4 per pound and the chicken cost $3 per pound. She will spend at least $11 no more that $15. What is the system of inequalities to model this is situation

    asked by ty on August 16, 2015
  11. chemistry

    What volume in mL of 0.0985 M sodium hydroxide solution is required to reach the equivalence point in the complete titration of a 15 mL sample of 0.124 M phosphoric acid?

    asked by What? on December 10, 2012
  12. chemistry

    STANDARDISATION OF 0.1 M HCl Borax dissolves slowly in water at room temperature. Why do we not use a stirring rod to mix the solution and speed up this stage of the experiment?

    asked by alex on April 22, 2013
  13. Chemistry

    1.prepare 2L of 0.150 deci normal aluminum chloride 2.saline solution contains 2grams of its major constituent solute in 1000ml of water.what is it's normality

    asked by Esther on December 8, 2016
  14. chemistry

    What is the pH of a 0.2 M solution of pyridinium chloride (C5H5NHCl)? Kb for pyridine (C5H5N) is 1.5 × 10−9 . 1. 8.824 2. 2.788 3. 4.761 4. 3.068 5. 3.308 6. 2.698 7. 2.938 8. 5.176 9. 9.239

    asked by Anonymous on April 26, 2015
  15. Chemistry

    What is the molar concentration of K4Fe(CN)6 solution if 40 ml were used to titrate 150 mg of Zn ( that are dissolved ) forming K2Zn3[Fe(CN)6]2 ? I really need help for this excersice , I don't know what to do... Note: In my book the answer is 0,0382 M

    asked by Mary on June 3, 2017
  16. Chemistry

    The volume of .150 molar NaHCO3 solution that contains 6.30 g of Na2CO3 is... a. .200 L b. 0.400 L c. .500 L d. 1.60 L e. 2.5 L I know the answer is C but I do not understand how. Can someone please help!!! M= moles of solute/liters of solutions.

    asked by Lucien on September 25, 2010
  17. Chemistry

    A salt solution can be acidic, basic, or neutral. when dissolved in water, which of the following salts will not affect the pH: KCl, FeCl3, NaNO3, CaCO3, LiF, and NH4Br?

    asked by max on April 17, 2011
  18. VARIATION

    A rectangular brass slave has a square base of side x cm, and height h cm, its weight, w kg, is given by the formula w=(3x^2 h)/10. How is w changed if x is trebled and h is halved? (with solution pls... tnx...)

    asked by HELP HELP HELP MNHS on January 9, 2013
  19. Chemistry

    use the Ksp of SnS2= 1.0X10^-70 and calculate the pH of a hydrogen sulfide solution needed to precipitate 99.99% of the tin(IV) ion assuming [Sn^4+]=0.05M and that [H2S]=0.10M.

    asked by Tanner on March 25, 2012
  20. chemistry

    What volume in mL of 0.0985 M sodium hydroxide solution is required to reach the equivalence point in the complete titration of a 15 mL sample of 0.124 M phosphoric acid?

    asked by What? on December 9, 2012
  21. chemistry

    The redox reaction below occurs in acidic solution. Balance it with the smallest whole number coefficients and determine the coefficient for H+. MnO4-(aq) + HNO2(aq) ---> Mn2+(aq) + NO3-(aq)

    asked by Megan on October 31, 2008
  22. chemistry

    What volume of 0.174M Na3PO4 solution is necessary to completely react with 89.1mL of 0.106M CuCl2? 2Na3PO4(aq) + 3CuCl2(aq) produces Cu3(PO4)2(s)+ 6NaCl(aq)

    asked by Anonymous on October 9, 2010
  23. chemistry

    How many milliliters of 0.316 M KOH are needed to react completely with 58.0 mL of 0.297 M FeCl2 solution to precipitate Fe(OH)2? The net ionic equation is: Fe2+(aq) + 2OH-(aq) → Fe(OH)2(s)

    asked by Suly on February 23, 2015
  24. chemistry

    The following redox reaction occurs in basic aqueous solution. When balanced with the smallest whole number coefficients, what is the coefficient for OH-(aq)? Mn(OH)2(s) + MnO4-(aq) = MnO42-(aq). - after doing the question i got 1..but i don't know if im

    asked by John on November 7, 2009
  25. Chemistry

    A solution is prepared by mixing 45.00 mL of 0.022 M AgNO3 with 13.00 mL of 0.0014 M Na2CO3. Assume volumes are additive. Calculate [Ag+], [CO32-], [Na+] and [NO3-] after equilibrium is established.

    asked by Olivia on November 15, 2013
  26. Chemistry

    calculate the concentration of sodium benzoate that must be present in a 2.0M solution of benzoic acid (C6H5COOH) to produce a pH of 4.00. THIS IS THE ONLY INFORMATION GIVEN. I CANNOT FIND Kb ANY WHERE IN MY TEXT NOR DOES IT GIVE US A VOLUME. CAN ANYONE

    asked by Lucinda on May 27, 2010
  27. Chemistry

    A buffer is made by mixing 52.1 mL of 0.122 M acetic acid with 46.1 mL of 0.182 M sodium acetate. Calculate the pH of this solution at 25 degrees C after the addition of 5.82 mL of 0.125 M NaOH

    asked by Chemistry Problem on May 1, 2010
  28. math

    Two equal circles of radius 8cm intersect at X and Y. If the line joining the centers is 12cm long, find the length of XY. with solution pls, tnx...

    asked by HELP HELP HELP MNHS on January 30, 2013
  29. science

    calculate the concentration for the reaction of 0.25mole 0f sodium hydroxide NaOH and water H20 solution of 250cm^3. Provide the answer in cubuc decimeter

    asked by clay on September 16, 2013
  30. Algebra (variation)

    A rectangular brass slave has a square base of side x cm, and height h cm, its weight, w kg, is given by the formula w=(3x^2 h)/10. How is w changed if x is trebled and h is halved? (with solution pls... tnx...)

    asked by HELP HELP HELP MNHS on January 9, 2013
  31. Titrations

    How do I calcualte and what would my titration curve look like for a 25mL 0.1M H3PO4 solution titrated with 0.1M NaOh. The problem involves Ka and pKa values which i have, not sure how to use this information and make a graph out of it?

    asked by Jerry on March 30, 2010
  32. algerbra 1

    6 18/-2= or is it undefined 7 -2+t=9 solution t= 8 Evaluate p/g for p=98 and g=7 p/g= 9 Tell which real number corresponds to the situation. During the game, a person wins 450 points. What is the corresponding numbe in this sentence? 10 Simplify

    asked by Connie on November 17, 2011
  33. chem

    What is the pH of a solution prepared by adding 4.000 grams of NaOH to a 50.00 mL of a buffer that is 2.00 molar both in acetic acid and sodium acetate? (Assume final volume is still 50.00 mL)

    asked by phil on April 21, 2010
  34. Chemistry

    8.76g of aluminum sulphide is added to 0.0350L of 0.250mol/L lead(II)nitrate solution. calculate the maximum mass of precipitate, PbS that can form

    asked by paul on January 27, 2011
  35. English

    Dear Ms.Sue, thank you for your answer. Will you please help me with one more question? Do you think it's possible to use such phrases as "for a long time / for a month" in the mid-position, for example: "They have been trying for a week to find a solution

    asked by Ilma on May 30, 2016
  36. math

    I need the answers really quick before my time is out HELP PLZZ 3. determine which ordered pair is a solution of y = 2x – 3? A.(-2,7) B.(0,3) c.(-4,-11) d.(5,-7) 4.on which of the following lines does (7,1) lie? A. y-5x=4 b. y=x-10 c. y=-4x+3 D. y=-x=8

    asked by IhateMath on April 16, 2015
  37. Algebra

    b. The pH level of a solution describes its acidity. The pH of a substance is defined by the equation: pH = -log(h^+) where H^+ is the hydrogen ion concentration in moles per liter. If the pH of carbonated soda is 3, what is H^+

    asked by Blank on March 11, 2019
  38. Chemistry

    A sample of sodium hydroxide of volume 11 mL was titrated to the stoichiometric point with 24.5 mL of 0.138 M HCl(aq). What is the initial molarity of NaOH in the solution? Answer in units of M.

    asked by Andrea on May 29, 2016
  39. Chemistry

    An 8.00 mass % aqueous solution of ammonia has a density of 0.9651g/ml. Calculate the molality, molarity, and mole fraction of NH3. This question seems simple but I cannot seem to remember how to do this. Help please?

    asked by ALISON on December 14, 2011
  40. chemistery

    What is the molar concentration of a solution of sulfuric acid, H2SO4, if 4.64 mL react completely with 0.644 g of NaOH which was dissolved in 200 mL of water? Hint given in feedback

    asked by johny on October 7, 2014
  41. math

    Find the solution where x and y are integers to: 1/x + 1/y = 1/14 I can use a computer to get a list of solutions: 7, -14 10, -35 12, -84 13, -182 15, -210 16, 112 18, 63 21, 42 28, 28 but I'm having trouble solving this analytically and coming to a

    asked by Sean on June 16, 2011
  42. qualitative chemistry

    calculate the percent w/v, mole fraction of components, molarity and normality of the solution containing 13 g nahso4 dissolved in water upto total volume of 250 ml

    asked by maggie valle on July 4, 2013
  43. Chemistry

    what mass of hydrogen chloride gas is required to produce 250 ml of hydrochloric acid solution with a pH of 1.57 pH 1.57 H3O = 10^-1.57= .027mol/L .027(4)= .108mol/L 36.46(.108)=3.9g

    asked by John on April 8, 2016
  44. Chemistry

    Balance the following equations for a half reaction that occurs in a acidic solution A) ClO3- --> Cl2 B)H2BO3- -->BH4- C) MnO4- + HNO2 -->NO3- +Mn2+

    asked by Anonymous on November 19, 2012
  45. College Chemistry

    Using the accurate concentration that you measured in Part A (which is 14.77 ml), calculate the mass of HCl (in grams) present in a 15.00-mL sample of the acid solution, using proper dimensional analysis

    asked by Alex on December 2, 2012
  46. physics

    two charged particles of masses 4m & m and having charges +q & +3q are placed in uniform electric field they are allowed to move for 2 sec find the ratio of their kinetic energy solution

    asked by Arshita on March 28, 2016
  47. Chemistry Help

    Using the accurate concentration that you measured in Part A (which is 14.77 ml), calculate the mass of HCl (in grams) present in a 15.00-mL sample of the acid solution, using proper dimensional analysis

    asked by Alex on December 2, 2012
  48. science

    write balanced equation showing the reaction occurs when lead is added to a solution containing a mixture of aqueous silver nitrate and copper(ii)sulfate

    asked by saeed mohmoud on December 31, 2016
  49. chemistry

    Calculate the concentration of a solution prepared by adding 15.00 mL of 1.92E−3M KMnO4 from a buret into a 50.00 mL volumetric flask, which is then filled to the 50.00 mL graduation mark with distilled water.

    asked by Julie on March 20, 2018
  50. science

    The question is: Calculate the pH of a solution that results from 50.0 ml of 0.15mol/L HCOOH with 75.0ml of 0.13mol/L HCOONa. I know I need to use the henderson-hasselbalch equation with the pka being 3.74 but I'm not sure how to get the ratio to plug in.

    asked by Manika on February 26, 2017
  51. Analytical chemistry

    Calculate to four decimal places the mass of purely dry MgCO3(Magnesium Carbonate) required to make 1L of a 1000 ppm Mg stock solution.

    asked by cindy on October 20, 2016
  52. US history

    What did England and the English settlers really want from colonization? National Glory? Wealth? Adventure? A solution to social tensions? New sources of goods and trade? Did they get what they wanted?

    asked by Abbey on February 1, 2009
  53. Chemistry

    A solution is made by mixing equal masses of methanol, CH4O, and ethanol, C2H6O. Determine the mole fraction of each component to at least three significant figures

    asked by Heather on February 20, 2012
  54. sci

    atomic theory is. a. subject to change if new information is discovered. b.a solution the problem of differing isotopes. c. unchangeale.

    asked by somebody help i am new on October 28, 2014
  55. CHEMISTRY Homework Assignment

    Hi I noticed someone else put this question up, but I am having a hard time with this one. I HAVE NO IDEA WHAT TO DO. What will be the products of the electrolysis of an aqueous solution of zirconium iodide (ZrI4)? (The electrodes themselves are platinum.)

    asked by Kendra on May 10, 2013
  56. chemistry

    A solution of AgNO3 (1 x 10-6 molar) is prepared. To this is added K2CrO4 until precipitation of Ag2CrO4 begins. The Ksp of Ag2 CrO4 is 9 X 10-12. Addition of NaCl will bring about:

    asked by shahanas on January 14, 2011
  57. AP CHEMISTRY

    Suppose that a 15-mL sample of a solution is to be tested for I- ion by addition of 1 drop (0.20 mL) of 0.30 M Pb(NO3)2. What is the minimum number of grams of I- that must be present for PbI2(s) to form? (Ksp = 7.9 10-9)

    asked by HELP PLEASE to DrBob222 on March 12, 2012
  58. chemistry

    How would set up a problem like this? A mass of 20.0 g of NaOH is dissolved in water to form 5.0 dm^3 of solution. What is the molarity of the hydrogen ion concentration if the temperature is 25 degrees Celsius?

    asked by Kathryn on January 11, 2011
  59. Chemistry

    If 152 g of a cyclohexyl bromide is dissolved in 932 g of benzene solvent, calculate the boiling temperature of the solution. Consider if the solute is an electrolyte. i kinda get it but im not really sure what the "i" would be equal to.

    asked by Kobe on March 2, 2010
  60. chemistry

    Three substance absorbe light in the un/visible region. In determining the concentration of these three substances which are present in the same solution using spectrophotometry (without prior separation) what condition must apply?

    asked by joehak on December 8, 2008
  61. Chemistry

    What is the concentration of an unknown potassium dichromate solution with an absorbance of 1.603 at 345nm? (The path length is 1 cm, molar absorptivity constant = 0.412 A.mol-1.cm-1 )

    asked by Ainsley on May 21, 2018
  62. COM/150

    Need help with some supporting details, and subdetails for my appendix d. My thesis is "Instead of being the solution to larger issues like low self-esteem and depression, cosmetic surgery has become the issue." Can you help with some examples you would

    asked by Nikol on April 6, 2010
  63. Chemistry

    An antifreeze solution is prepared containing 40.0 g of ethylene glycol (molar mass = 62.0 g/mol) in 60.0 g of water. Calculate the freezing point of this solutions A.-20.1°C B.0.518°C C.20.1°C D.120.1°C

    asked by Jessie on July 30, 2016
  64. Math

    Rename each repeating decimal as a fractio in lowest terms. Use Let statement, an equation, a proper solution (using Properties of Equality). 1) 0.87 2) 0.5406 3) 0.048 4) 3.274

    asked by Sammyjoo on November 29, 2012
  65. Health plz help

    1.survival floating can only be done by good swimmers {True} or False 2.an accident Chain always contain the A:problem*** B:unsafe action C:solution D:witnesses Please help correct me if I'm wrong

    asked by GummyBears on May 11, 2015
  66. Chemistry

    A 50.0 mL solution with analytical concentration of 0.100M in HClO4and 0.080M in formic acid is titrated with 0.200M KOH. Calculate the pH after addition of the following volumes of titrants: a) 0.0, b)20.0, c) 25.0, d)35.0, e)45.0, f)50.0

    asked by Wynona Genesis on July 29, 2016
  67. chemistry

    How many grams of ethylene glycol, HOCH2CH2OH, are present in 2.6 gallons of a 4.61 m solution with a density of 1.88 g/mL? i think that this is a dimensional analysis type of question. 1 gal ~ 3485.41 ml. i just need help with the set up, i think...

    asked by Myra on May 11, 2011
  68. chemistry

    what mass in grams of a molecular substance (mole weight=50.0g/mol) must be added to 500g of water to produce a solution that boils at 101.56(degrees)C?

    asked by jimbo on June 26, 2010
  69. Chemistry

    Sodium sulfate is slowly added to a solution containing 0.0500 M Ca^2+ (aq) and 0.0390 M Ag^+ (aq). What will be the concentration of Ca^2+ (aq) when Ag2SO4(s) begins to precipitate? What percentage of the Ca^2+ (aq) can be separated from the Ag^+ (aq) by

    asked by Anon on March 16, 2013
  70. chemistry

    a solution of lead(2)nitrate is added to hydrochloric acid. A precipitate is formed in a double displacement reaction Question:how to balance this equation problem

    asked by james on November 1, 2011
  71. E.M.U

    For the same solution components as in part (f), buffers are prepared with a total concentration of NH3 + NH4Cl = 0.10 M. The pH values are 8.0, 8.5, 9.0, 9.5, 10.0, 10.5, and 11.0. Find the molar solubility of CdS in these solutions

    asked by k.sina on March 26, 2014
  72. chem

    Calculate the mole fraction of the solute in the following aqueous solution: a) .112M C6H12O6 (d=1.006g/ml). b) 3.2% ethanol, by volume (d=.993g/ml); pure CH3CH2OH, d=.789g/ml

    asked by emerald on February 4, 2011
  73. Chemistry

    Identify the principle conjugate acid/base pair and calculate the ratio between them in a solution that is buffered to pH 9.00 and contains a. H2S b. ethylenediamine dihydrochloride c. H3AsO4 d. H2CO3

    asked by SS on November 16, 2010
  74. Science

    Atomic Theory is A. subject to change if new information is discovered*** B. a solution to the problem of differing isotopes. C. unchangeable D. a descriptive table that list all of the elements.

    asked by Helppp on February 20, 2018
  75. chemistry

    What is the molar concentration of all ions present in a solution prepared by mixing the following? Assume that volumes of the solutions are additive, and neglect H+ and OH- from water. 60.0 mL of 0.25 M KCl and 80.0 mL of 0.85 M NaOH.

    asked by Anonymous on September 28, 2014
  76. Chemistry

    A mixture of lead, magnesium, nitrate and chromate ions are present in a solution. What will the precipitate be? Question 2 options: A) MgPb B) Pb(NO3)2 C) PbCrO4 D) MgCO3

    asked by Katie on May 10, 2012
  77. Chemistry

    5% hydrocholric acid in 30ml (1 fl oz) - how to dillute to make 200 ml of .01 M? I think i need to first fin concentration solute /amount of solution x 100 .05/30 x100 = .166 Then i get lost!

    asked by Dan on March 4, 2015
  78. chemistry

    I know I posted this and it got a response, but unfortunately for me the reponse has got me confused, sorry Bob. Fe3+ (aq), Ca2+ (aq) and Ba2+ are all present in the same solution. Fully describe a procedure whereby you could separate these ions from one

    asked by Kali on November 12, 2011
  79. chemistry

    The following redox reaction occurs in basic aqueous solution. When balanced with the smallest whole number coefficients, what is the coefficient for OH-(aq)? Mn(OH)2(s) + MnO4-(aq) = MnO42-(aq). 1. ) 2 2. ) 3 3. ) 4 4. ) 6 5. ) 8 the answer i got was

    asked by edward on November 8, 2009
  80. chemistry

    The solubility product for Zn(OH)2 is 3.0x10^-16. The formation constant for the hydroxo complex,Zn(OH)4^2- , is 4.6x10^17. What is the minimum concentration of OH- required to dissolve 1.6×10−2 mol of Zn(OH)2 in a liter of solution?

    asked by kris on March 10, 2011
  81. Math

    CHECK AND CORRECT MY ANSWERS!! PLEASE!!:D:D Write the ratio in the simplest form. 45:15 9:3 3:1*** 1:3 4:1 Solve the following proportion. (solve p) p/3 = 8/12 2*** 8 12 24 A recipe calls for 3 cups of flour to make 3 dozen cookies. Use the proportion to

    asked by Anonymous on November 13, 2017
  82. economics

    Suppose that the following equations describe an economy (C, I, G, T, and Y are measured in billions of dollars and r is measured in percent; for example, r = 10 C=170+0.6(Y-T),T=200,I=100-4r,G=350 (M/P)d=L=0.75Y-6r, (M/P)s=735 a. Derive the equation for

    asked by yaw on August 16, 2010
  83. math

    solve 2cos^2x = square root of three cosx (couldnt find the sign on keyboard sorry) for principal values of x. express the solutions in degrees

    asked by Kathy on April 15, 2010
  84. Maths - Trig

    I just had a test, and one question I tried heaps of times and I still couldn't answer. It was "Prove secèsinè + cosecè cosè = 2cosecè " Can someone please tell me if proving this is possible at all? (But don't tell me how to solve it)

    asked by TP on February 19, 2009
  85. Math

    Manuel earns $400 per week plus a 3% commission on everything he sells. Write and solve and inequality to find out how much he must sell to have a weekly income of at least $700.

    asked by Kate on April 27, 2015
  86. math

    If the lengths of the sides of a rectangle are integers, and if one side is 2 more than another, then the perimeter could equal A. 1998 B. 1999 C. 2000 D. 2002 I started this, but I'm not sure what they're asking and I don't know how to solve it.

    asked by Ryan on July 21, 2015
  87. Physics

    How do you solve this problem? How fast (in rpm) must a centrifuge rotate if a particle 9.00cm from the axis of rotation is to experience an acceleration of 115,000 g's?

    asked by Emily Grossman on February 21, 2011
  88. Chem

    The value of ƒ¢H‹ for the reaction below is -482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO(g) reacts completely. 2CO(g) + O2(g) ¨ 2CO2(g) *I just want to how to solve this problem as in an equation, not the answer.

    asked by Harlem on June 8, 2012
  89. math

    A student scored 84 and 90 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between 80 and 90, inclusive.

    asked by alaa on November 12, 2018
  90. Logarithm help please

    Express y as a function of x. What is the domain? Explain your answer. log4y = x + log4 Solving exponential equations with logarithms Solve to the nearest thousandth. 5^1+x = 2^1-x

    asked by Joe on September 18, 2015
  91. java refractor

    Why am I getting error called that the renaming refractor cannot apply in this context when trying to change a name in the netbeans? And how should I solve it? Please tell me quickly. emergency I need to submit my project tomorrow

    asked by harry on January 1, 2011
  92. Pre Calculus

    So I only have 3 homework questions left and I can't seem to figure out how to solve. I've tried solving them, but I keep getting them wrong. Any help? Factor the polynomials: a) 3x^2 +19x - 40 b) x^4 - 25x^2 Simplify the expression completely: (1/(x-h)^3

    asked by Anonymous on September 18, 2013
  93. More trig

    Use the Quadratic Formula to solve the equation in the interval [0,2pi). Then use a graphing utility to approximate the angle x. (1) 5/(tanx+secx) (2) 4cos^2x-4cosx-1=0 Thank you.

    asked by Poindexter on November 17, 2008
  94. Statistics

    X is a normally distributed random variable X with mean 15 and standard deviation 0.25. Find the values xL and xR of X that are symmetrically located with respect to the mean of X and satisfy P(xL < X < xR) = 0.80. (Hint. First solve the corresponding

    asked by Anonymous on September 27, 2014
  95. chemistry

    if 3.86x 10^22 atoms of aluminum meatal react with cupric sulfate, how many grams of copper metal will be created. How do I write this problem out and solve it

    asked by Tosha on November 30, 2010
  96. Math

    Jackie scored 82 and 88 on her first two quizzes. Write and solve a compound inequality to find the possible values for a third quiz score that would give her an average between 80 and 85, inclusive. a. 80=

    asked by Kaai97 on November 10, 2015
  97. physics

    An example of the neutron absorption reaction is . 1 0 n+10 5 B-->7 3 Li+ 4 2 He The rest masses of each particle in atomic mass units (u) are 1 0 n= 1 u 10 5 B=10 u 7 3 Li =7 u 4 2 He= 4 u where 1u=1.66x10^-27 kg. calculate Q Q= in MeV I have the same

    asked by Amy on May 8, 2013
  98. Algebra 2

    Find the dimensions and area of the largest rectangle that can be inscribed in a right triangle whose sides are 9cm, 12cm, 15cm. Use quadratic functions to solve.

    asked by Sarah on April 8, 2008
  99. math

    Write the prime factorization using exponents of each number .Then find the greatest common factor (GCF)of the numbers. 1\24.............. 36.............. 2\21.............. 56.............. Please,,help me.😞 I tried to solve the problems but don't I

    asked by nnn on September 8, 2015
  100. chemistry

    How many liters of 0.101 m NaCl contains 1.70 mol of this salt? Assume this solvent is H2O. Answer in units of L I do not understand what i am looking for or how to solve for it. Steps would be appreciated.

    asked by kelly on February 22, 2012

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