1. bluehills high school

    general solution 1-cos2x/4cos(90)

    asked by lebo on November 6, 2015
  2. algabra

    Solve and graph the solution set.

    asked by edie on August 19, 2007
  3. Algebra 1

    Find the solution to the system y=x^2-2x-2 My answer is (-1,1)(7,33)

    asked by Steve on March 30, 2015
  4. chemistry

    What are the concentrations of H3O+ and OH- and what is the pH of a 0.15 M solution of Na2CO3 (at 25 °C).

    asked by darren on March 15, 2011
  5. chemistry

    What weight of Ca(OH)2 is necessary to prepare 3,500ml of 0.7M of Ca(OH)2 solution?

    asked by jen on August 26, 2018
  6. CHEMISTRY

    How to determine the molarity of a 1.8% NaCl solution.

    asked by BILL on February 24, 2011
  7. Algebra

    x^2-25 over x^2+7x, divided by x^2+7x+10 over x^2+9x+14. I found the solution to be x-5 over x, is this correct?

    asked by Anonymous on September 23, 2009
  8. college chem

    PLEASE..Determine [OH-]of a solution that is 0.270 M in HCO3-...thanks

    asked by susy on April 9, 2010
  9. Science

    0.02mole of the HCL and in 2leter of the pH solution

    asked by Anonymous on August 20, 2018
  10. Chemistry

    Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.

    asked by JOHN on November 17, 2012
  11. maths-Linear inequations

    Find the solution (feasible) of following inequations x+ 4y ≤ 24; 3x +y ≤21 ; x+ y ≤9; x≥0 and y≥0

    asked by anoynomous on March 22, 2013
  12. Chemistry

    What is the pH of a 2.5 x 10-2 M HCl solution? I'm so confused how to find this :(

    asked by Jess on April 24, 2012
  13. trigonometry

    Find the general solution for f(x) = 27 tan^2 x-9=0

    asked by lindsay on April 23, 2012
  14. Algebra

    Graph the system below and write its solution. =3x+y−6 =y−1/2x-1

    asked by Anonymous on October 9, 2014
  15. math

    Solve system of equations x+3y=7 (1) x=8-3y (2) no solution

    asked by deedra on January 7, 2009
  16. Government

    Looking for an issue and a solution where the people and the government can help

    asked by Em on September 5, 2013
  17. math

    Use the solution of the system below to find x-y: 4x-2y=11 3x-4y=-6 a 11.3 b 0.1 c -0.1 d -11.3 please explain how to do this. Thanks!!!

    asked by Anonymous on March 26, 2009
  18. algebra

    Is it possible to have different quadratic equations with the same solution? Explain.

    asked by becky on March 2, 2008
  19. Chemistry

    What is the concentration of H+ in a solution containing 73.0 g of HCl in 0.5 L of water?

    asked by Sarah on May 10, 2012
  20. Math

    Identify the extraneous solution when solving √x+2= x

    asked by I DONT UNDERSTAND on April 5, 2014
  21. Chemistry

    The pH of a .200M HBrO solution is 4.67. What is the acids Ka?

    asked by Shayla on May 9, 2014
  22. Chemistry

    What is the pOH of the solution in the question I asked before this one?

    asked by Emma on February 26, 2014
  23. Chemistry

    Calculate the pH of a solution at 25.0 °C that contains 1.94 × 10-10 M hydronium ions.

    asked by Josh G. on November 16, 2012
  24. chemistry

    What is solubility of CaF2 in a solution buffered at pH 5

    asked by Karen on March 31, 2008
  25. Math

    Identify the solution of the system of equations -3x-4y=2 8y=6x-4

    asked by Felicia Chase on April 21, 2014
  26. algebra

    Solve by completing the square x^2+3/2x=3 What is the solution? x=

    asked by Becky on March 11, 2008
  27. Algebra 1

    Hi, What point is a solution to the system of inequalities y >4x and y >-2x-3 (1/2,2)?

    asked by Batman on June 26, 2013
  28. chemistry

    50 mL of 1.50* 10^-2 M HI(aq) is mixed with 75.00 mL of 1.10* 10^-2 M KOH(aq). What is the pH of the Final solution

    asked by reena on February 16, 2009
  29. chemistry

    What is pH of 0.1M solution of NH4Br, if the pKb of NH3 is 4.74?

    asked by Henry on November 9, 2012
  30. Math

    Identify the extraneous solution when solving √x+2= x

    asked by Alice PLEASE HELP ME on April 5, 2014
  31. Math

    a and b are integers such that the polynomial f(x)=x^4−4x^3−8x^2+ax+b has 1+2i as a solution to f(x)=0. What is the value of 10a+b?

    asked by Crow on June 10, 2013
  32. eng1511

    The sure solution of unemployment is a better quality of education

    asked by amanda on March 11, 2013
  33. Math 116 algebra please check

    Solve for the indicated letter. e=9f, for f The solution is f = 1/9e Please check this

    asked by jay jay on July 16, 2008
  34. Algebra 1

    Solve 2x^2 + 7x = -8 using the Quadratic Formula. A: No solution?

    asked by Victoria on May 13, 2014
  35. Chemistry

    How do you find the [OH-] of a 1x10^-3 M solution of NH4Cl?

    asked by Linda on February 20, 2014
  36. algebra 2

    which point is a solution to the following systems of inequalites -4x+ 5y> 20 8x + 3y < 24

    asked by gege on May 11, 2013
  37. math

    x+5y - 6z = 2 kx +y -z = 3 5x -ky +3z =7 For what values of k does the system have a unique solution

    asked by Anonymous on August 13, 2012
  38. Math

    solve by the elimination method 5u+3v=-17, 2u+v=-7 would there be a solution or not?

    asked by tootles on February 8, 2013
  39. chemistry

    What is the pH of a 100g/l solution of potassium cyanide?

    asked by Joe Price on October 30, 2014
  40. Anatomy and Physiology

    If one solution is 1000 x as acidic as another, how many pH units would there be between the two?

    asked by Molly on July 26, 2012
  41. chem

    what is the pH of an aqueous solution that is 0.123M NH4Cl

    asked by help!!! on February 16, 2009
  42. cant figure out

    Solve by the substitution method. 7x+3y=1 AND -4X+Y=13 What is the solution.

    asked by tera on February 10, 2009
  43. Chemistry

    What is the % mass/volume of a 3.00 M solution of NaCl?

    asked by ASAP!! on May 6, 2014
  44. Math

    When solving a system algebraically how can you tell if there is no solution

    asked by Taylor on February 17, 2014
  45. math

    Given that x = 2log t is a solution of the equation10^(2x+1) -7(10^x) -26 =0. Find t

    asked by lindsay on July 10, 2014
  46. Differential Equation

    Find the general solution of y"-3y=8e^(3t)+4sint

    asked by Maegan on July 14, 2012
  47. Chemistry

    What is the pH of a solution of 0.1 M silver hydroxide, which is only 10% ionized?

    asked by Sarah on May 10, 2012
  48. Chemistry

    What is the % mass/volume of a 3.00 M solution of NaCl?

    asked by Sudana on May 6, 2014
  49. maths

    the solution set for the following 1.X3+x2-6x-10=0 2.2x2-4x-4=0 3.x4-x3-4x2+x+1=0

    asked by Laila on October 8, 2013
  50. chemistry

    what is the pH of a NaOH solution whose concentraiton is 4.5 * 10^-5 M. HOW WOULD I DO THIS PROBLEM??

    asked by Miley on May 15, 2008
  51. Math

    Which of the following equations has an infinite number of solution? A. 3x - 3 = 4 -4x B. 2y + 4 - y = 16 C. 7x + 5 = 4x + 5 +3x D. 6y - 2 = 2 (y-1)

    asked by SandpitTurtle on January 17, 2014
  52. Chemistry

    Propanoic acid has a Ka of 1.3 x 10^-5. What is the % ionization in a 3.0M solution?

    asked by Lily on May 22, 2012
  53. Algebra

    Identify the solution(s) of the system of equations 9x + 2y = 6 8x - 2y = 8

    asked by Monica on June 4, 2013
  54. Algebra

    Identify the solution(s) of the system of equations 3x+2y=4 5x-4y=3

    asked by Monica on June 4, 2013
  55. math

    How many grams of a drug are contained in 1L of a 30% solution?

    asked by Anonymous on September 28, 2012
  56. Chemistry

    Calculate the pH of a 5.90x10-3 M solution of H2SO4.

    asked by Chris on March 5, 2012
  57. Chemistry

    What is the molarity of a 5.00 x 102 ml solution containing 2490 g of KI?

    asked by Victoria on August 18, 2013
  58. general chemistry

    Calculate the molarity of each of the following solutions.70.8 in 2.51 of solution

    asked by kelia on March 7, 2013
  59. Math

    What is the solution for the following system of linear equations? x + 6y = -4 3x - 4y = 10

    asked by Susie on May 30, 2008
  60. Algebra

    I am completely lost...please anyone can anyone help? x = 2+y x and 2 are in inches then it says solution y=x(in) - a(in)

    asked by George on September 1, 2013
  61. algerbra

    Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x (–3, –2) (–3, 2) (–2, –3) (2, –3)

    asked by robert on September 8, 2014
  62. Math 116 algebra please check

    solve using the multiplication principle. -5/6x = -7/8 Th solution is x=21/20

    asked by jay jay on July 16, 2008
  63. algebra

    Solve the inequality graph solution 5r+4

    asked by Tammy on February 25, 2014
  64. math

    Identify the solution(s) of the system of equations, if any. 2x + 5y =10 Y = 2 – x a) (-2,0) b) (2,0) c) (0,-2) d) (0,2)

    asked by monet on January 27, 2013
  65. Math

    Identify the solution of the system of equations 9x+2y=8 8x-2y=8

    asked by Felicia Chase on April 21, 2014
  66. analytical chemistry

    How much NaOH (in grams) would there be in 0.25 litre of a 0.3M solution?

    asked by MJ on February 15, 2014
  67. Chemistry

    Calculate the [h30+] in a 0.010M solution of Sr(OH)2

    asked by Saphire on April 25, 2012
  68. Chemistry

    Assuming complete dissociation, what is the pH of a 2.55 mg/L Ba(OH)2 solution?

    asked by Joe on March 23, 2013
  69. Math 116

    Identify the solution (s) of the system of equations, if any. 2x+4y=11 y=5-5x a. (2.5,-0.5) b. (2.5,0.5) c. (-0.5,2.5) d. (0.5,2.5)

    asked by Queta on June 21, 2013
  70. CHEMISTRY

    What is the [H+] in a 0.10 M solution of ascorbic acid,C6H8O6?

    asked by James on April 25, 2012
  71. Differential Equations

    y'=2x+y. Find a solution whose graph is also an isocline.

    asked by Brian on February 14, 2013
  72. Algebra

    find the solution set for -x^2=-64x

    asked by Anonymous on March 6, 2013
  73. math

    What is the molarity of a 15%w/v HCl solution (GMW=36.46)?

    asked by tiffany on June 17, 2013
  74. maths

    using buttons of different colours ,find the solution of 5x-6=9

    asked by abhigyan on June 17, 2013
  75. Algebra

    Determine if (-4/5,3) is a solution to -5x+7y=25. Show work

    asked by Rand on April 25, 2012
  76. math

    Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x (–3, –2) (–3, 2) (–2, –3) (2, –3)

    asked by robert on September 8, 2014
  77. chemistry

    How many osmoles are there in 6.00 ML of a 6.0 N mg3(po4)2 solution?

    asked by Nicole on December 5, 2012
  78. Math 116

    Identify the solution (s) of the system of equations, if any. x+3y=5 6x-6y=14 a. (3,3/2) b.(3,2/3) c.(3/2,3) d. (2/3,3)

    asked by Queta on June 21, 2013
  79. Chemistry

    what is the pH solution in which 15 mL of 0.10 M NaOH has been added to 25 mL of 0.10 M HCl

    asked by Veronica on June 10, 2014
  80. math

    Identify the solution(s) of the system of equations, if any. 6x + 4y = 0 y = 3 - 3x

    asked by robert on September 8, 2014
  81. math

    Identify the solution(s) of the system of equations, if any. x + 3y = 7 6x - 9y = 6

    asked by robert on September 8, 2014
  82. math

    the solution is (2/3,-1/2)(-3,-8) and he formula is f(x)=mx+b given the slope and one point

    asked by valentine on August 5, 2014
  83. Franklin High

    4x - y = 2, 9x - 2y = 8 find solution by substitution method

    asked by liz on June 12, 2013
  84. Chemistry Web Quest

    How do you recover the dissolved solid in a solution?

    asked by Lyne on February 13, 2009
  85. Chemistry

    how can you prepare 300ml of 15% h2so4 solution

    asked by rone on February 18, 2013
  86. math

    Use the solution of the system below to find x-y: 4x-2y=11 3x-4y=-6 a 11.3 b 0.1 c -0.1 d -11.3 please explin how to do this. Thanks!!!

    asked by Anonymous on March 26, 2009
  87. math

    the ph of a solution is 3.6 what is it hydrogen ion concentration

    asked by i need help on December 9, 2012
  88. science

    dilution of a vinegar solution 10x?

    asked by judalyn on May 27, 2014
  89. algebra

    graph the system and write the solution -2x+y=6 y=1/2+3

    asked by Anonymous on March 7, 2013
  90. math

    how many grams of NaC1 are in 100mL of NS solution?

    asked by karen on March 14, 2009
  91. Math

    Tell Whethter the givin number is a solution of -5 < n. 3. 8 4. -8 5. -4 6. 4

    asked by Dejon on January 10, 2009
  92. math

    Use quadratic formula (3x/x-1)+(2/x)=4 the solution set is ( , )

    asked by Anonymous. on August 23, 2014
  93. Inorganic Chemistry

    1) 5.0 mL of 6.0 x 10^-4 potassium 5.0 mL of the solution prepared above are then mixed with

    asked by Katheryn on July 30, 2012
  94. math

    Identify the solution(s) of the system of equations, if any. X + 2y = 4 9x – 4y = 3 a) (1, 2/3) b) (1, 3/2) c) (2/3, 1) d) (3/2,1)

    asked by monet on January 27, 2013
  95. math

    please help simplify (3y/x^4)^-3 1/(1+square root of a) what would be the best solution: (1)/(x-2) +8= (x)/(x-2)

    asked by haley on April 7, 2012
  96. chemistry

    0.0386mol glucose in 88.0ml of solution

    asked by cynthia on December 8, 2012
  97. Chemistry 1301

    How many g of NaOH are in 10 ml 0.1 M solution? How do you find this out, what are the steps?

    asked by Thaddeus on April 10, 2013
  98. Chemistry

    i need help. Calculate the pH of a 0.24 M CoCl3 solution. The Ka value for Co(H2O)63+ is 1.0 10-5. how do u do these with like the Cl there?

    asked by Lindsey on February 15, 2009
  99. math

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    asked by Felicia Chase on April 21, 2014
  100. Chemistry

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