1. Astronomy

    Suppose that you travel to a planet that has 4 times the Earth's mass and 4 times the Earth's radius. Calculate how much more or less you would weigh on this planet compared to your weight on Earth. Express your answer as a factor or fraction of your

    asked by Rebecca on October 1, 2011
  2. chemistry

    using the values for heat of fusion, specific heat of water, or heat of vaporization, calculate the amount of heat energy. Calories needed to warm 20.0g of water at 15 degrees Celsius to 72 degrees Celsius (one step) Show work please

    asked by matt on October 3, 2010
  3. Math(Reiny Please Help)

    An explosives company specializes in bringing down old buildings. The time it takes for a particular piece of flying debris to fall to the ground can be modelled by the function h(t)= -12(t+2)^2 + 120(t+2), where h is the height of the debris in metres and

    asked by Heaven on May 31, 2016
  4. Physics II

    For an object which is 4.0 mm in height located 6.0 cm to the left of a converging lens (positive f) of focal length +9.0 cm, determine the image location and characterize it. Show your work here. No Calculator. Image is located ________________cm to the

    asked by Kendrick on May 1, 2017
  5. Math1

    An explosives company specializes in bringing down old buildings. The time it takes for a particular piece of flying debris to fall to the ground can be modelled by the function h(t)= -12(t+2)^2 + 120(t+2), where h is the height of the debris in metres and

    asked by Heaven on May 30, 2016
  6. Algebra Help

    Let x = log_2 1/8 Write the exponential form of the equation and solve the equation for x. Does this work? Thanks! Exponential form is 2^-3=1/8 To Check: 2^-3=1/2^3=1/8

    asked by Pamela on August 5, 2009
  7. Math, Algebra

    So I've tried for two days to figure out this problem. I tried to ask my friend to help me but she just won't. My parents don't know anything about math, they said so themselves. The first day I tried I cried I got so frustrated. The second day I just gave

    asked by Help please and fast! on March 24, 2017
  8. Chemistry

    A 10.0 mL aliquot of a flouride sample solution was diluted to 250 mL in a volumetric flask. The F- concentration of this DILUTED sample was determined with a F- ion selective electrode and found to be 7.1 mg/L. What is the concentration of F- in the

    asked by Ronnie on October 19, 2015
  9. Chem

    Nitric acid can be prepared by bubbling dinitrogen pentoxide into water. N2O5(g) + H2O -> 2H+(aq) + 2NO3-(aq) a) How many moles of H+ are obtained when 1.50 L of N2O5 at 25 degrees C and 1.00 atm pressure is bubbled into water? b) The solution obtained in

    asked by Dave on January 1, 2007
  10. chemistry

    A sample containing 0.0500mol of Fe2(SO4)3 is dissolved in enough water to make 1.00L of solution. This solution contains hydrated SO4 2- and Fe(H2O)6 3+ ions. The latter behaves as an acid: Fe(H2O)6 3+ --> Fe(H2O)5OH 2+ + H+ a) Calculate the expected

    asked by Chris on February 16, 2011
  11. Math- urgent

    Harry buys American cheese at the deli. He buys 1/4 pound at the cost of x dollars per pound. If he pays $12.25 for 2.5 pounds of cheese, what is the cost per pound? Please show your work.

    asked by Sarah on April 27, 2014
  12. math

    Daniel gave 4/5 of his stickers to Javier. Javier’s collection of stickers increased to 64. If Javier had 28 stickers in the beginning, how many stickers did Daniel have in the beinging? can u please show the work and explain how u got it...so i could

    asked by Katherine on March 31, 2011
  13. prob & stat

    In a simple random sample of 90 patients who saw a certain dentist, 8 patients had their teeth whitened. What is the 95% confidence interval for the percent of all the dentist's patients who had their teeth whitened? show work (5.9, 11.9) (4.0, 13.8) (3.0,

    asked by sweet12 on May 18, 2015
  14. Math

    At the dance, Lyndi and Josh danced 3/4 hour without stopping. This is 3/8 hour more rhan Kecia and Les danced. How long did Kecia and Les danced? Show your work..

    asked by Mike on February 6, 2013
  15. Calculus

    Consider the curve y^2+xy+x^2=15. What is dy/dx? Find the two points on the curve where y equals 0 and show that the tangent lines there are parallel. Find the coordinates of all points on the curve where there is a horizontal tangent line, with work.

    asked by K.Jeanes on April 19, 2011
  16. math

    A certain disease has an incidence rate of 0.8%. If the false negative rate is 7% and the false positive rate is 3%, compute the probability that a person who tests positive actually has the disease. Show all work.

    asked by un on April 29, 2017
  17. math

    A band sold out a concert with 4200 seats. A random sample of 120 ticket buyers is surveyed and 28 buyers made their purchase on the first day the tickets went on sale. How many of the 4200 tickets are likely to have been sold on the first day they were

    asked by Ry on February 15, 2017
  18. precalculus

    Find (a) the equation of a line that is parallel to the given line and includes the given point, and (b) the equation of a line that is perpendicular to the given line through the given point. Write both answers in slope-intercept form. (c) Graph both of

    asked by tinathomas on November 11, 2011
  19. chemistry help

    1. Calculate the energy change (q) of the surroundings (water) using the enthalpy equation qwater = m × c × ΔT. We can assume that the specific heat capacity of water is 4.18 J / (g × °C) and the density of water is 1.00 g/mL. Show ALL your work. The

    asked by MadiB PLEASE HELP :( on April 7, 2013
  20. chemistry

    The mass of a sample of boron atoms is 5.60 g. How many boron atoms are in this sample? Show your work here.

    asked by Savannah on December 19, 2012
  21. holy school

    CaCO3 + H2 SO4 ------> CaSO4 + CO2 + H2 O 200 g of calcium carbonate are added to 4 L of water. a. What is the molarity of the calcium carbonate solution? b. How many moles of hydrogen sulfate would be needed to react with a 25 mL sample of the calcium

    asked by mamta on March 3, 2013
  22. Technology

    please check these for me: 1. One of the possible drawbacks of technology is a. it increases productivity b. it never changes c. it doesn't improve out living conditions d. it can cause pollutions D 2. Choose the one statement which is true about

    asked by y912f on October 23, 2009
  23. Math

    I have a few questions about T-Matrix. In excel, I am suppose to work with powered matrices to construct a weighted T matrix, using a scalar of .7. Does this mean I multiply each of the powered matrices by .7? Or do I power the powered matrices by .7? Or

    asked by Lisa on October 13, 2010
  24. physics math

    the acceleration of a car is 2m/s^2 and another car has constant velocity of 35m/s.what time the first car overtake the car with constant velocity of the first car? draw and show solution

    asked by Hshdhdhdhdjdjdjdjjsjshsgshshs on December 10, 2012
  25. math

    In an interbarangay basketball league the team from barangay Culiat has won 12 out of 25 games a winning percentage of 48% .We have seen that they need to win 8 games consecutively to raise their percentage to at least 60%. What will be their winning

    asked by Queen on July 18, 2016
  26. Math

    In an interbarangay basketball league the team from barangay Culiat has won 12 out of 25 games a winning percentage of 48% .We have seen that they need to win 8 games consecutively to raise their percentage to at least 60%. What will be their winning

    asked by Queen on July 18, 2016
  27. Physics

    A mass (0.5 kg) and spring (k = 250 N/m) system oscillates with an amplitude of 3.5 cm. a) What is the total mechanical energy of the system? b) What is the maximum speed of the mass? c) What is the maximum acceleration of the mass? I need help please! Do

    asked by Anonymous on December 2, 2016
  28. Chemistry

    A gaseous reaction occurs at a constant pressure of 50.0 atm and releases 69.8 kJ of heat. Before the reaction, the volume of the system was 8.80 L . After the reaction, the volume of the system was 2.80 L . Calculate the total internal energy change,

    asked by Brittany on March 5, 2012
  29. Chemistry

    An aqueous sodium salt (NaCnH2n+1O3) solution has an osmotic pressure of 2.041 atm when 1.068 g of the salt are dissolved in 200. g of water at 25 degrees C. Assuming molality and molarity in such a dilute solution are the same and that the sodium salt is

    asked by Ceamus Angelina on May 24, 2018
  30. banking and financial services management

    The Hypothetical Finance Ltd has structured a hire-purchase deal. The required to make a down payment of 20 per cent of the investment cost. The hire-term is four years with quarterly payment in advance. The flat rate of interest is 13 per cent. The

    asked by kishor on April 15, 2012
  31. college-Financial Services(MBA)

    The Hypothetical Finance Ltd has structured a hire-purchase deal. The required to make a down payment of 20 per cent of the investment cost. The hire-term is four years with quarterly payment in advance. The flat rate of interest is 13 per cent. The

    asked by Anonymous on April 17, 2010
  32. chemistry

    a sucrose solution with a volume of B uL has a density of C g/ml. the solution is D % sucrose by mass. if i added x ml of this sucrose to another solution, how many grams sucrose did I add?a sucrose so

    asked by neece on January 24, 2012
  33. Chemistry

    I cannot understand how the mass of the system has changed. There's no need for you to do my work please just explain it to me! :) thanks so much A scientist placed copper powder into a crucible and heated it until all of the copper reacted. The resulting

    asked by nicole on September 29, 2015
  34. Children's Literature

    Asking your students to show you how the fox in "Hattie and the Fox" felt encourages which development? 1. personality 2. intellectual, 3. social and moral 4.aesthetic creative Wouldn't it encourage social and moral development in students? 2 or 3 would

    asked by Karin on February 6, 2007
  35. math

    A group of hikers buys 8 bags of mixed nuts .Each contains 3 1/2 cups of nuts.The mixed nuts are shared evenly among 12 hikers.How many cups of mixes nuts each hiker receive?Show your work or explain your answer.

    asked by Anya dunglas on September 11, 2016
  36. chemistry

    A gas has a volume of 590 mL At a temperature of -55.0 degrees celsius. What volume will the gas occupy at 30.0 degrees celsius? show your work. I'm just confused as to how to start this and the steps required. I'm not asking for an answer, but rather some

    asked by gina on March 8, 2018
  37. History

    1:Which philosophers of the European Enlightenment influenced the founding documents of American government through their theory of a social contract? A:Michel de Montaigne and Denis Diderot B:Charles de Montesquieu and Mary Wollstonecraft C:Thomas Hobbes

    asked by anonymous on January 29, 2018
  38. physics

    A light string of length of 56.0 cm connects two small square blocks, each with a mass of 1.50 kg. The system is placed on a slippery (frictionless) sheet of horizontal ice and spun so the two blocks rotate uniformly about their common center of mass,

    asked by Ricky on November 28, 2017
  39. PHYSICS

    I AM SORRY I JUST HAVE ONE OF THE MOST HORRIBLE TEACHERS, AND I AM TEACHING MYSELF FOR I GET NOTHING IN CLASS. On an old-fashioned rotating piano stool, a woman sits holding a pair of dumbbells at a distance of 0.565m from the axis of rotation of the

    asked by Chiongo on October 22, 2014
  40. Research Methodology and Program Evaluation

    Good morning, I wanted to see if someone could help me with the following questions because I am not too sure. Examining groups of people is considered an option in program evaluation. True False I selected false because there are different type of program

    asked by Lencho on July 9, 2017
  41. Research Methodology and Program Evaluation

    Good morning, I wanted to see if someone could help me with the following questions because I am not too sure. Examining groups of people is considered an option in program evaluation. True False I selected false because there are different type of program

    asked by Lencho on July 9, 2017
  42. math

    for every 8cds sold, there were 12 dvds sold. a combined total of 70 cds and dvds were sold. how many cds were sold that day? write a proportion to show the relationship and solve it to find the number so cds sold

    asked by dawn on January 25, 2009
  43. intermediate microeconomics

    why is modelling useful, despite being a simplified version of reality? my answer: answer: an economic model attempts to describe every aspect of reality. a models power stems from the elimination of irrelevant detail which allows the economist to focus on

    asked by jenny on November 17, 2012
  44. systems word problems

    the sum of two numbers is 11. their product is 30. find the numbers. answer 5,6 represent the unknown by variables using let statements, translate into equationsusing variables. combine hem using substitution or elimination. answer the question by

    asked by ed on March 1, 2010
  45. physics

    A bullet with mass m and a velocity of v is shot perpendicular to the edge of a uniform rod with length L and mass 4m which is free to move and rotate on a frictionless horizontal surface. The bullet is lodged into the rod and move together after the

    asked by Anonymous on July 21, 2010
  46. Chemistry

    10g of NOBr were added to a 5L flask and the temperature was fixed to 350K. The following equilibrium is reached : NOBr(g)=NO(g)+1/2Br2(g);The pressure measured at the equilibrium was 0.63 atm.Determine Kp and Kc. I need help to solve this problem.I

    asked by Gianna mele on September 19, 2016
  47. math 5th grade

    Henry bought 1 liter of fruit juice. He kept 1/4 liter of it in a bottle & poured the remainder equally into 6 cups. How much fruit juice was there in each cup? Give the answer in liters? **Plz show me how to solve the problem and the answer would be great

    asked by litzy on April 11, 2011
  48. MATH-Stuck :-(

    I really need help factoring these special Trinomials. This question really puzzled me. I thought I had it correct, but when I checked the answer at the back of the book, I was wrong, and so I would like to know what was it that I had done wrong. This was

    asked by Anonymous on November 8, 2010
  49. MATH-STUCK :-(

    I really need help factoring these special Trinomials. This question really puzzled me. I thought I had it correct, but when I checked the answer at the back of the book, I was wrong, and so I would like to know what was it that I had done wrong. This was

    asked by Anonymous on November 8, 2010
  50. Chemistry

    How to prepare 10% sucrose solution enriched with 0.1% phenylalanine? And also how to make the stock solution of phenylalanine for the above process. I have prepared 10% sucrose solution by adding 10g sucrose in 100ml water , but how do i make 0.1%

    asked by Chemistry on June 24, 2017
  51. physics

    Consider two masses m1 and m2, connected by a spring of spring constant k and an uncompressed length L. The masses are on a frictionless surface. Initially, m2 compresses the spring to L/2 length. At t=0 the system is released. Find the position of the

    asked by Andres on October 28, 2014
  52. Chemistry;HELP

    Use the 5-step method and be sure to include units where appropriate. Round your answers to the correct number of significant digits. Mass m Density = -------------- or D = ------- Volume v Adjust the density formula and solve the problems below: m D =

    asked by Victoria on January 16, 2013
  53. Physics SHM

    Am self studying SHM, so sorry for the elementary questions. Would someone check/confirm some facts i think I've learned please. 1 If a sine wave graph starts at the origin at time = 0s, the sysyem is in equilibrium? 2 The amplitude at t= 0s is zero. 3

    asked by charlie on November 5, 2008
  54. Physics

    The system shown in the figure is held initially at rest. Calculate the angular acceleration of the system as soon as it is released. You can treat MA (1 kg) and MB (12 kg) as point masses located on either end of the rod of mass MC (27 kg) and length L (9

    asked by James on June 20, 2012
  55. physics

    Heather and Matthew walk eastward with a speed of 0.98 m/s. If it takes them 34 min to walk to the store, how far have they walked? If Joe rides south on his bicycle in a straight line for 15 min with an average speed of 12.5 km/h, how far has he ridden?

    asked by anonymous on September 20, 2006
  56. Calculus 2 (Series - Convergent or Divergent?)

    Can someone show me a step by step process and explanation how to solve this problem? 1) Consider the following series. (∞ on top of summation symbol) (k = 1 under the summation symbol) ∑ k(k+15)/(k+13)^2 Determine whether the series is convergent or

    asked by Erin on March 29, 2015
  57. Chem

    . Oleum or fuming sulfuric acid available commercially in concentrations ranging from 20 to 99.9% sulfur trioxide. A. What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3? Show your solution. B. Discuss at least three

    asked by John on November 17, 2012
  58. Science

    A 0.21g sample of sulfuric acid is dissolved completely in sufficient water to make 0.25 litre of final solution. Calculate the hydrogen ion concentration in mol1-1 in this solution and show successive steps in the calculation: If 0.21g in 0.25l then 0.84g

    asked by Anthony on March 12, 2007
  59. math

    Enter your answer and show all the steps that you use to solve this problem in the space provided. A party store offers small balloons and large balloons. You can choose from pink, blue, green, and yellow balloons. You can choose from silver, gold, and

    asked by niki on February 20, 2019
  60. Chemistry

    An aqueous solution of ethanol is 14.1M C2H5OH. The density of the solution is 0.853g/mL. What is molality of ethanol in the solution? What is mass % of ethanol in solution? I got the molality which is -21.7 ethanol, but I can't figure out how to get the

    asked by Robert on January 14, 2013
  61. Math

    So the questions was-->Factor the following algebraic equation and describe the process by which it is done: x²+ 3x – 10 = ? I solved the questions correctly but my teacher said I need to show it algebraically not arithmetically. & she said that I need

    asked by Jenny on May 8, 2013
  62. Alegabra 1

    26 ÷ 23 Sarah is trying to solve the above expression. She takes the following steps: 1. Sarah checks to see that both numbers have the same base. Since they both have the same base, she decides to work with the exponents. 26 ÷ 23 2. Sarah now adds 6 and

    asked by morgan miner on February 6, 2012
  63. Math

    Genny babysits for two different families. One family paints her $6 an hour and a bonus of $20 at the end of the night. The other family pays her $3 every half hour and a bonus of $25 at the end of the night. Write and solve the system of equations that

    asked by May on April 14, 2016
  64. pre-calc

    The city planners of bakersfield, CA are studying the current and future needs of the city. The sewage system they have in place now can support 300,000 residents. The current population of the city is 180,000, up from 122,000 eight years ago. Assuming

    asked by maddy on January 8, 2010
  65. Physics

    A 15 kg uniform disk of radius R = 0.25 m has a string wrapped around it, and a m = 3.3 kg weight is hanging on the string. The system of the weight and disk is released from rest. When the 3.3 kg weight is moving with a speed of 2.1 m/s, what is the

    asked by Emma on March 12, 2012
  66. government

    the debate over the powers of the presidency is essentially a debate a. about article III of the constitution b. between supporters of a strong presidency and supporters of a weak presidency c. about the system of checks and balances d. about the electoral

    asked by jere on January 17, 2008
  67. Math

    150 men live in a certain town: 85 are married 70 have a cell phone 75 own a car 55 are married and have a cell phone 35 have a cellphone and a car 40 are married and have car 30 are married, have a car and have a cellphone. How many men are single and do

    asked by Nia on October 31, 2014
  68. Material balance

    A dilute salt solution containing 6% salt is fed to an evaporator at rate of 10000 kg/h for a trail run. crystals formed along with the saturated solution adhering with them are sent to a centrifuge for the recovery of the solution. 60% of the adhering

    asked by Patel bhavya on December 11, 2016
  69. Technical Math (College)

    Question: The formula s=4.90t^2 gives the distance s in meters that a body falls in a given time t. Find the distance a ball drops in 4.2 seconds. Use the rules for multiplication of measurements in evaluating the answer.

    asked by Shelly on January 20, 2016
  70. College Alegebra

    I know I have to take the log of both sides, but I don't seem to get how they work out! Can anyone explain how to do 3e^(1+x) = 2 AND 10^(2x+3) = 280 If you walk me through one I should be able to figure out the other. Hopefully... I think you need to go

    asked by Lost in Logarithms on April 1, 2007
  71. Algebra

    There are two solutions to | 16x - 5 | = 3. The greatest solution is ___. Since the expression, 16x - 5, can be either positive or negative, solve for both. 16x - 5 = 3 16x = 8 x = .5 -(16x - 5) = 3 -16x + 5 = 3 -16x = -2 x = 1/8 You can decide which is

    asked by Juri on July 23, 2007
  72. algebra

    How many liters of a 20% solution of acid should be added to 10 liters of a 30% solution of acid to obtain a 25% solution? Equation: Answer:

    asked by Anonymous on July 21, 2008
  73. chemistry

    The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by kyle J on September 30, 2013
  74. general chemistry II

    Phosphoric Acid is usually obtained at an 85% phosphoric acid solution, by mass. If this solution is 15 M, what is the density of the solution? What is its MOLALITY?

    asked by JL on January 29, 2014
  75. analytical chem

    10.00mL of 0.100mol/L HCl solution is add to 10.00mL of 0.100mol/L NaOH solution. what is the pH of the resulting solution?

    asked by deg on April 22, 2014
  76. Chemistry

    You use 11 ml of a 1M H2SO4 solution to titrate 6ml of ammonium hydroxide solution. What was the concentration of the ammonium hydroxide solution?

    asked by Eddie on December 3, 2010
  77. Chemistry

    Consider a solution that contains both C6H5NH2 and C6H5NH3+. Calculate the ratio [C6H5NH2]/[C6H5NH3+] if the solution has the following pH values. (Assume that the solution is at 25°C.) (a) pH = 4.70 (b) pH = 5.26 (c) pH = 5.42 (d) pH = 4.96

    asked by Margaret on March 13, 2013
  78. chemistry

    The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by kyle J on September 30, 2013
  79. MATH

    How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

    asked by marc on September 11, 2014
  80. college math

    How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

    asked by Anonymous on September 11, 2014
  81. math

    How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution?

    asked by Alana on September 11, 2014
  82. Chemistry

    The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by Emma on December 6, 2012
  83. chemistry

    The neutralization of 27.3 mL of an unknown concentration H2SO4 solution requires 72.2 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)?

    asked by kyle J on September 30, 2013
  84. chemistry

    Calculate the pH of 0.3 M HCl solution. Calculate the pH when 100 mL of a 0.5 M solution of NaOH are added to 300 mL of the HCl solution.

    asked by Anonymous on July 2, 2016
  85. math

    How many liters of water should be evaporated from 110 liters of a 12% saline solution so that the solution that remains is a 20% saline solution

    asked by nate on September 11, 2014
  86. Math

    How many cc of a 20% solution of a sulfuric acid must be mixed with 100 coffee a 50% solution to make a 25% solution of sulfuric acid

    asked by Aqnonymous on January 17, 2017
  87. Science

    The problem I'm trying to answer is: Ann is driving down a street at 59 km/h. Suddenly a child runs into the street. If it takes Ann 0.719 s to react and apply the brakes, how far will she have moved before she begins to slow down? Answer in units of m. I

    asked by Becca on September 30, 2011
  88. Math Help Please

    Please show me how to put this in interval notation. Thanks! I know I solved this right, I think, but need to put it in interval notatioin. Please tell me if i am correct. Thanks! PleaseSolve: (x-3)/(x^2-25)

    asked by Michelle on August 2, 2009
  89. algebra

    In an experiment, the population P of bacteria is given by P=1000e^kt,where k is constant.If the size of population bacteria is found to be 3000 after 10 hours, what is the size of the population after 5 hours?Show me the solution please.

    asked by julie on October 10, 2016
  90. geometry

    I am not a student, I am a parent trying to help my son. I understand why you do not want to solve the questions, but can you please help me set them up correctly so I can try? h = -16t(exponent 2) + 60t where t is the time in seconds. A) Factor the

    asked by KP1 on October 5, 2016
  91. chemistry

    What is the concentration of the Mg2 ion in solution when [CO3-2] = 0.25M given that the Ksp= 6.82 x 10-6 for the following reaction MgCO3-------->Mg +. CO32- Chemistry - DrBob222, Friday, November 11, 2011 at 5:34pm Ksp = (Mg^2+)(CO3^2-) Substitute 0.25M

    asked by Monique on November 12, 2011
  92. Chemistry

    A 8.71 g sample of an aqueous solution of hydroiodic acid contains an unknown amount of the acid. If 25.0 mL of 0.388 M barium hydroxide are required to neutralize the hydroiodic acid, what is the percent by weight of hydroiodic acid in the mixture? I

    asked by Hannah on November 20, 2011
  93. Math, rational inequalities

    Please can someone help me solve this problem? 2/x + 6/x-1 less than or = -5 8/x -1 = -4x Divide both sides by 4 2 >= -x Multiply both sides by -1 -2

    asked by agirl on November 26, 2006
  94. Chemistry

    In which solution (acidic, basic, neutral water, or doesn't matter) is sodium acetate most soluble? acidic solution Basic solution neutral doesn't matter I already tried basic solution and got it wrong.

    asked by Meg on October 10, 2010
  95. Math(Calculus)

    Ok I have a bunch of questions, please bare with me and i'd appreciate it VERY much if you could help me with these! 1. Assume that you are given the equations of three planes. Without solving the system, describe a "test" with rationale, that you could

    asked by rick on August 11, 2010
  96. chemistry

    Hydrochloric acid solution reacts with zinc according to the following equation: 2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of hydrochloric acid solution Ca=0.5mol/l must be prepared from C=5mol/l hydrochloric solution. 1) Specify the glassware needed for this

    asked by angy on December 11, 2016
  97. Physics

    A block with mass M = 5.00 kg rests on a frictionless table and is attached by a horizontal spring (k = 130 N/m) to a wall. A second block, of mass m = 1.25 kg rests on top of M. The blocks are displaced by 10 cm then released. If the coefficient of static

    asked by Sue on May 27, 2014
  98. trig

    A pole is braced by two wires that extended from the top of the pole to the ground. The lengths of the wires are 16 feet and 18 feet and the measure of the angle between the wires is 110 degrees. Find, to the nearest foot, the distance between the points

    asked by Anonymous on April 21, 2013
  99. physics

    A 0.4 kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 200 J. Ignoring friction, what is the kinetic energy of the system after the mass is released and has moved

    asked by Anonymous on November 7, 2011
  100. physicis

    a 0.30 kg mass attached to a spring is pulled back horizontally across a table so that the potential energy of the system is increased from zero to 120 J. Ignoring friction what is the kinetic energy of the system after the mass is released and has moved

    asked by Laura on February 15, 2013

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