Questions Asked on
March 21, 2012

  1. bio

    The cell membrane is a highly selective barrier that controls the movement of substances in and out of the cell. In fact, polar molecules are unable to go across unless A. they are enclosed in water-filled vesicles. B. they pass through channels in the

    asked by Monique
  2. geometry

    find the value of x in each triangle: triangle x has 1 angle at 53 degree for value x i got: 63.5 degree is that correct? Classify each triangle. 7. The measures of 2 angles are : 45 degree and 45 degree i got: acute 8. the measures of 2 angles are 15

    asked by marko
  3. CHEM

    A 0.552 g sample of ascorbic acid(Vitamin C) was dissolved in water to a total volume of 20.0 ml and titrated with 0.1103 M KOH. The equivalence point occurred at 28.42 ml. The pH of the solution at 10.0 ml of added base was 3.72. From this data, determine

    asked by Cooper
  4. science

    deduce what similarities would be found in the DNA structure of genes from a cat human and eucalyptus tree

    asked by Benji
  5. physics

    consider the following: A point on the tip of a tuning fork vibrates in harmonic motion described by the equation d=10sin(ωt). 1. ω for a tuning fork that has a frequency of 535 vibrations per second. (I don't understand this question) 2. How many cycles

    asked by Help
  6. geometry

    find the value of x in each triangle: triangle x has 1 angle at 53 degree for value x i got: 63.5 degree is that correct? Classify each triangle. 7. The measures of 2 angles are : 45 degree and 45 degree i got: acute 8. the measures of 2 angles are 15

    asked by marko
  7. Chemistry!!!

    Consider a solution that is 0.022 M in Fe2+ and 0.014 M in Mg+2. A). If potassium carbonate is used to selectively precipitate one of the cations while leaving the other on solution, which cation will precipitate first? What minimum concentration of K2CO3

    asked by ALISON
  8. science

    why does a cool, distant, supergiant star such as Betelgeuse have such a high apparent magnitude? PLEASE HELPPPPP!!!!!!

    asked by Paula
  9. PHYSICS PLEASE HELP

    A 80- kg child sits in a swing suspended with 2.6- m-long ropes. The swing is held aside so that the ropes make an angle of 46 o with the vertical. Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is

    asked by Holly
  10. math

    A rectangular park has an area of 6 square miles. The width of the property is 3/8 the length of the property. What is the width of the property?

    asked by Isabella
  11. physics

    A buoy oscillates in simple harmonic motion according to the motion of waves at sea. An observer notes that the buoy moves a total of 6 feet from its lowest point to its highest point. The buoy returns to its highest point every 15 seconds. Amplitude: 6

    asked by Help
  12. physics

    In figure p4.36, m1 = 10kg and m2 = 4.0kg. the coefficient of static friction between m1 and the horizontal surface is 0.50, and the coefficient of kinetic friction is 0.30. (a) if the system is released from rest, what will its acceleration be? (b) if the

    asked by riel
  13. science

    If Deneb and Rigel were located at alpha Centauri's distance from earth, how would they appear? PLEASEEE HELPPPPPP!!!!!!!!!!

    asked by Paula
  14. Physics PLEASE HELP

    A 80- kg child sits in a swing suspended with 2.6- m-long ropes. The swing is held aside so that the ropes make an angle of 46 o with the vertical. Use conservation of energy to determine the speed the child will have at the bottom of the arc when she is

    asked by Anonymous
  15. Math

    carpet at a British home supply store sells for 16 pounds(currency)per square meter.What is the price in dollars per square yard.

    asked by Taylor
  16. Chemistry

    Consider the reaction: PCl3(g) + Cl2(g) PCl5(g). If [PCl3] = 0.78 M, [Cl2] = 0.44 M, and [PCl5] = 0.88 at equilibrium, what is the value of K? A.0.39 B.1.4 C.2.6 D.0.72 Thanks!

    asked by Hannah
  17. CHEM

    Consider the reaction, 3 NO2(g) + H2O(l) ® 2 HNO3(aq) + NO(g), where DH = – 137 kJ. How many kilojoules are released when 92.3 g of NO2 reacts?

    asked by jerry
  18. math

    Please explain how to set this up and how to solve: A school's rectangular athletic fields currently have a length of 125 yd and a width of 75 yd. the school plans to expand both the length and the width of the fields by x yards. What polynomial is

    asked by Jane
  19. math

    Simplify the radical expression by rationalizing the denominator: 2(square root)108 / (square root) 180y Please show me how to set up and how to solve

    asked by Jane
  20. physics

    A buoy oscillates in simple harmonic motion according to the motion of waves at sea. An observer notes that the buoy moves a total of 6 feet from its lowest point to its highest point. The buoy returns to its highest point every 15 seconds. Amplitude: 6

    asked by Help
  21. statistics

    in a batch of 15 students failed in a test. the marks of 10 who have passed were 9,6,7,8,8,9,6,5,4,7.find the median of all 15 students.

    asked by meena
  22. physics

    A spherically symmetric object, with radius R = 0.50 m and mass M = 1.3 kg, rolls without slipping across a horizontal floor, with velocity V = 2.1 m/s. It then rolls up an incline with an angle of inclination θ = 25° and comes to rest a distance d = 3.0

    asked by Katie
  23. chem

    Consider the reaction: C3H8(g) + 5 O2(g) ® 3 CO2(g) + 4 H2O(g), where DH = – 531 kcal/mol. Which statement is true? A.Heat is absorbed. B.The bonds formed in the products are stronger than the bonds broken in the reactants. C.The products are higher in

    asked by steve
  24. biology

    Organisms must be able to adapt to a changing external and internal environment. An organism's ability to maintain a stable internal environment is known as homeostasis. How does a cell's membrane help an organism maintain homeostasis? A. Cell membranes

    asked by Monique
  25. physics

    A large water tank has an inlet pipe and an outlet pipe. The inlet pipe has a diameter of 2.19 cm and is 1.25 m above the bottom of the tank. The outlet pipe has a diameter of 5.93 cm and is 4.85 m above the bottom of the tank. A volume of 0.411 m^3 of

    asked by maria
  26. algebra

    sara can take no more than 22 pounds of luggage on a trip. her suitcase weighs 112 ounces. how many more pounds can she pack and not go over the limit?

    asked by justin
  27. Physics

    A mass m=400g hangs from the rim of a wheel of radius r=15cm. When released from rest, the mass falls 2.0m in 6.5sec. Find the moment of inertia of the wheel

    asked by José
  28. chemistry- Stoichiometry

    If 852.04 g Al(NO3)3 reacted with the 741.93 g Na2CO3, which would be the limiting reagent? c. Use the limiting reagent to determine how many grams of Al2(CO3)3 should precipitate out in the reaction. d. If only 341.63 g of Al2(CO3)3 precipitate were

    asked by princess
  29. English

    1. My hobby is computer games. 2. My hobbies are computer games. 3. My hobby is a computer game. 4. My hobby is computer game. 5. My hobby is playing computer games. (#5 is right. What about the others? Which ones are grammatical?...thank you for your

    asked by rfvv
  30. physics

    The spring in the muzzle of a child's spring gun has a spring constant of 780 N/m. To shoot a ball from the gun, first the spring is compressed and then the ball is placed on it. The gun's trigger then releases the spring, which pushes the ball through the

    asked by kassie
  31. Physics Help!!

    A 33.0-mH inductor has a reactance of 2.20 kΩ. (a) What is the frequency of the ac current that passes through the inductor? (b) What is the capacitance of a capacitor that has the same reactance at this frequency? (c) The frequency is tripled, so that

    asked by linds
  32. Chemistry

    What is true about H+ and OH- when the endpoint is reached in an acid-base titration?

    asked by Allyson
  33. statistics

    Musical styles other than rock and pop are becoming more popular. A survey of college students finds that 48% like country music, 30% like gospel music, and 10% like both. What is the conditional probability (±0.01) that a student likes gospel music,

    asked by Dee
  34. physics

    A 33.0-mH inductor has a reactance of 2.20 kΩ. (a) What is the frequency of the ac current that passes through the inductor? (b) What is the capacitance of a capacitor that has the same reactance at this frequency? (c) The frequency is tripled, so that

    asked by linds
  35. chemistry

    72.33 mL of 0.137 M HCl was added to an Erlenmeyer flask and is titrated with 0.165 M NaOH. Calculate the pH when 5mL of NaOH is added after the equivalence point has been reached.

    asked by blair
  36. chemistry

    72.33 mL of 0.137 M HCl was added to an Erlenmeyer flask and is titrated with 0.165 M NaOH. Calculate the pH when 5mL of NaOH is added after the equivalence point has been reached.

    asked by blair
  37. Chemistry

    Given the following equation: Na2O + H2O ---> 2 NaOH. How many grams of NaOH is produced from 1.20 x 10^2 grams of Na2O? How many grams of NaO2 are required to produce 1.60 x 10^2 grams of NaOH?

    asked by Carl
  38. Science/Chemistry

    please help... What is the molarity of 3.68mL of a solution containing 0.0025 moles of calcium chloride?

    asked by Fisher
  39. media

    most local newspapers get their national news from a) government reports, press briefings, and announcements b) interviews with politicians c) local reporters d) wire services e) the Internet

    asked by tina
  40. physics

    The sun radiates energy at the rate of 3.92x 10^26 W. (a) What is the change in the sun's mass in one second? (b)How much mass does the sun lose in the lifetime of your average earthling (say, 75 years)?

    asked by daniela
  41. physics

    A volume of gas v at temperature T1 and pressure P, is enclosed in a sphere. It is connected to another sphere of volume v/2 by tube and stopcock. This second sphere is initially evacuated and the stopcock is closed. If the stopcock is now opened and the

    asked by Joanna
  42. Physics

    Two trucks that appear to be identical collide on an icy road. One was originally at rest. The trucks stick together and move off at more than half the original speed of the moving truck. What can you conclude about the contents of the two trucks?

    asked by Becky
  43. Physics

    A car is driven at a constant speed of 85 km/h down a road. The car's engine delivers 49.2 kW of power. Calculate the average force that is resisting the motion of the car.

    asked by Becky
  44. Physics

    A 0.31 kg pendulum bob passes through the lowest part of its path at a speed of 2.02 m/s. The acceleration of gravity is 9.8 m/s2 . What is the tension in the pendulum cable at this point if the pendulum is 72 cm long? Answer in units of N

    asked by Hunter
  45. income tax

    Marion drives 20 miles a day from his first job to his second job. He worked 125 days during 2011 on both jobs. What is Marion's mileage deduction rounded to the nearest dollar assuming he uses the standard mileage rate and mileage is incurred ratably

    asked by Andy
  46. physics

    a person observes a firework display from a safe distance of 750 kilometer assuming that sound travels at 340 meters per second in air what is the time between the person seeing and hearing a fireworks explosion?

    asked by daquan
  47. physics

    The sun radiates energy at the rate of 3.92x 10^26 W. (a) What is the change in the sun's mass in one second? (b)How much mass does the sun lose in the lifetime of your average earthling (say, 75 years)?

    asked by daniela
  48. CHEMISTRY

    Rank the following complex ions in order of increasing wavelength of light absorbed. (Use the appropriate symbol to separate substances in the list.) Co(H2O)63+, Co(CN)63-, CoI63-, Co(en)33+

    asked by Sarah
  49. Physics

    Two objects of equal mass are on a turning wheel. Mass 1 is located at the rim of the wheel while mass 2 is located halfway between the rim and the axis of rotation. The wheel is rotating with a non-zero angular acceleration. For each of the following

    asked by Miriam
  50. physics

    What is the period and frequency of a 10-pound weight oscillating (as a pendulum) on a 5-meter-long rope?

    asked by Help
  51. physics

    A typical jogger burns up food energy at the rate of about 43 kJ per minute. How long would it take to run off a piece of cake if it contains 435 Calories?

    asked by Michelle
  52. chemistry

    A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.

    asked by blair
  53. English

    No wonder can last more than three days All good things are three are the same statements ? conquer is opposite of overpower 2 submit 3 subject 4 vanquish 5 master .

    asked by shan
  54. science

    what would be the absolute magnitude and color of a main sequence star with a temperature of 25,000 kelvin? HELP!

    asked by Paula
  55. math

    The weights of adult long-tongued fruit bats are known to be normally distributed with a mean of 20.22 grams and a standard deviation of 3.23 grams. What is the probability that a randomly selected bat will: a) weigh at most 15 grams? b) weigh less than 30

    asked by becky
  56. physics

    Donald Duck and his nephews manage to sink Uncle Scrooge's yacht (m = 3527 kg), which is made of steel (ρ = 7850 kg/m^3). In typical comic-book fashion, they decide to raise the yacht (which is now on the bottom of a lake) by filling it with ping-pong

    asked by maria
  57. physics

    A 33.0-mH inductor has a reactance of 2.20 kΩ. (a) What is the frequency of the ac current that passes through the inductor? (b) What is the capacitance of a capacitor that has the same reactance at this frequency? (c) The frequency is tripled, so that

    asked by linds
  58. Physics

    If you were standing in a bus moving at constant velocity would you have to lean in some special way to compensate for the bus's motion? Explain . What if the bus were at a constant acceleration? Explain.

    asked by Anonymous
  59. statistics

    1-the graduate selection committee wants to select the top 10% of applicants. On a standardized test with a mean of 500 and a standard diviation of 100, what would be the cutoff score for selecting the top 10% of applicants, assuming that test is normally

    asked by debra
  60. Psychology

    What are the primary biological foundation of psychology linked to behavior?

    asked by Nikki
  61. physics

    A kettle containing 1 kg of water has just reached its boiling point. How much energy, in joules, is required to boil the kettle dry?

    asked by Michelle
  62. Math

    Robert and his dad want to build a sandbox for his sister's birthday.They wanted it to be 4 feet wide and have an area of 28 square feet. What is the length of the sandbox? 7? Robert's dad decided to make the sandbox bigger by extending the length and

    asked by Derrick
  63. to writeacher

    can you help me with science. we usually have science on wednesday, but during that time, i have to go to violin. i don't get aything about electricity or magnets.

    asked by Celest
  64. accounting

    Mia Enterprises sells a product for $90 per unit. The variable cost is $40 per unit, while fixed costs are $75,000. Determine the (a) break-even point in sales units, and (b) break-even point if the selling price was increased to $100 per unit.

    asked by Meagan McPhail
  65. Equation from Three Points*HELP*

    Write the standard equation for the circle that passes through the points: (0, 0) (6, 0) (0, - 8) You must include the appropriate sign (+ or -) in your answer. Do not use spaces in your answer. x 2 + y 2 x y = 0 HELP PLEASE I NEED STEP BY STEP

    asked by Adrianna
  66. statistics

    Late payment of medical claims can add to the cost of health care. An article (M. Freudenheim, "The Check Is Not in the Mail," The New York Times, May 25, 2006, pp. C1, C6) reported that for one insurance company, 85.1% of the claims were paid in full when

    asked by Johniece McCoy
  67. algebra

    Explain how you can determine from the graph of a system of two linear equations in two variables whether it is an inconsistent system of equations.

    asked by algebra
  68. probability

    Suppose an unfair coin comes up heads 52.2% of the time if it is flipped. If the coin is flipped 26 times, what is the probability that: a) it comes up tails exactly 12 times? b) it comes up heads more than 22 times?

    asked by Sam
  69. physics

    A simple Atwood's machine uses two masses, m1 and m2. Starting from rest, the speed of the two masses is 7.0 m/s at the end of 5.0 s. At that instant, the kinetic energy of the system is 100 J and each mass has moved a distance of 17.5 m. Determine the

    asked by john
  70. physics

    A volume of gas v at temperature T1 and pressure P, is enclosed in a sphere. It is connected to another sphere of volume v/2 by tube and stopcock. This second sphere is initially evacuated and the stopcock is closed. If the stopcock is now opened and the

    asked by Joanna
  71. dressmaker

    when paper pattern pieces are dovetailed in cutting layout they're placed so they A-all face the same direction. B fit closely together to save fabric.c have their grain lines on the bias. d are lying face down on the fabric

    asked by ann
  72. math

    how do u put in writing to explain a array to find 4 times 13

    asked by jolene
  73. Spanish-Check please! I need help

    Please check-I'm having a problem interpreting these questions and I have to answer them for homework. Could you please check my translation I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en

    asked by Ellen
  74. Physics

    A ball is moving at 82 m/s when it hits a ball at rest which has a mass fours times as big as its own. The formally stationary ball leaves the collision with a speed of 7.5 m/s what is the final velocity of the first ball?

    asked by Becky
  75. Physics

    You are sitting at a baseball game when a foul ball comes in your direction. You prepare to catch it barehanded. In order to catch it safely, should you move your hands toward the ball, hold them still, or move them in the same direction as the moving

    asked by Becky
  76. English

    Could you please check these few things? Thank you, Writeacher. Here is the password connected to the students' class email address. If you want you can check the names of the students who have sent email so far. Could you please ask them all to send a

    asked by Matthew
  77. math

    Statistics: Analyze student exam scores Students were given an exam with 300 multiple choice questions. The distribution of the scores were normal and the mean was 195 with a standard deviation of 30. you may find it helpful to draw out this distribution

    asked by ro
  78. math

    in his left pocket ralph has 4 quarters and 5 nickels. in his right pocket he has 3 quarters 2 nickels and 1 penny. if he wants to select a quarter at random, which pocket should he choose?

    asked by Celeste
  79. History

    Tell meabout Forced Sterilization and its sue int he U.S. What was the total number of people in the U.S. sterilized and the reasons why. How was this later imitated by the Nazi people?

    asked by Logan
  80. Trial Balance Sheet

    need help with trial balance for Masasi company for June 30,2008

    asked by Angel Smith
  81. Spelling

    The homework question that I just posted at 7:03pm is for a kindengarden.

    asked by Allison
  82. Income Tax

    Which of the following is not a "trade or business" expense? A. Mortgage interest on a warehouse B. Depreciation on business equipment C. Mortgage interest on a personal residence D. Cost of goods sold is it C

    asked by Andy
  83. principles of physics

    A 19.3- gmass of gold in the form of a cube is 1.00 cmlong on each side (somewhat smaller than a sugar cube).What would be the length of the sides of a cube having four times this mass of gold?

    asked by Christie
  84. Economics

    The market demand in a Bertrand duopoly is P = 15 - 4Q, and the marginal costs are $3. Fixed costs are zero for both firms. Which of the following statement(s) is/are true? a.P = $3. b.P = $10. c. P = $15. d. None of the statements associated with this

    asked by Amanda
  85. economics

    A monopoly firm is different from a competitive firm in that A. there are many substitutes for a monopolist's product while there are no substitutes for a competitive firm's product B. a monopolist's demand curve is perfectly inelastic while a competitive

    asked by Anonymous
  86. chemistry

    A 3.555 g sample of a monoprotic acid was dissolved in water. It took 23.32 mL of a 0.875 M NaOH to neutralize the acid. Calculate the molar mass of the acid.

    asked by blair
  87. physics 30

    A current-carrying conductor that is 8.00x10^-2 m long is placed perpendicular to a magnetic field that has a strength of 6.00x10^-3 T. During a 3.00s time interval, 7.50x10^19 electrons pass a point in the conductor. The magnitude of the average magnetic

    asked by sarah
  88. media

    because of their dependence on government sources, the news media are unable to set the agenda of debate. true or false

    asked by tina
  89. media

    True or False Newspapers are among the most heavily regulated media in the United States.

    asked by tina
  90. ap world history

    Can you compare North American racial ideologies and their effects on society with Latin American/Caribbean racial ideologies and their effects on society in 1500-1830?

    asked by karla
  91. chemistry

    Fe + K2CO3

    asked by Anonymous
  92. algebra 1b

    it is known that making 1 lb of honey requires 20,000 trips by bees to flowers to gather nectar. How many pounds of honey would 75,000 trips produce how many pounds of honey would 75,000 trips produce.

    asked by kay
  93. Language Arts

    Need some help on the question below. "California was settled sooner than many Western states. The promise of gold first drew miners and settlers. Good climate and fertile land held them there (more successfully, most successfully) though." I know you use

    asked by Brandi
  94. to writeacher

    can you help me with science. we usually have science on wednesday, but during that time, i have to go to violin. i don't get aything about electricity or magnets.

    asked by Celest
  95. CHEMISTRY

    TO PREPARE 10% HCL SOLUTION ,HOW MUCH AMOUNT OF 35%HCL IS USED.SPECIFIC GRAVITY 1.18

    asked by Anonymous
  96. Math

    Robert and his dad want to build a sandbox for his sister's birthday.They wanted it to be 4 feet wide and have an area of 28 square feet. What is the length of the sandbox? 7? Robert's dad decided to make the sandbox bigger by extending the length and

    asked by Derrick
  97. Senior Project on Japanese

    I'm trying to do a senior project on japanese language but it has to be something specific about the language according to my senior project techer. any ideas?

    asked by Sidney
  98. income tax

    On May 26, 2007, Jamal purchased machinery for $30,000 to be used in his business. He did not elect to expense the equipment under §179 or the bonus. On October 10, 2011, he sells the machinery to a scrap metal dealer. What is his cost recovery deduction

    asked by Andy
  99. geometry

    The perimeterof a square is 32 inches. Find the lenght of its diagonal. the answers should be in simplest form. make a sketch and show work.

    asked by rob
  100. physics

    2 moles of an ideal gas at 20k changes from a pressure of 15 atm to 3 atm at constant temperature. Calculate the work done by the gas.

    asked by frank fred
  101. physics

    A volume of gas v at temperature T1 and pressure P, is enclosed in a sphere. It is connected to another sphere of volume v/2 by tube and stopcock. This second sphere is initially evacuated and the stopcock is closed. If the stopcock is now opened and the

    asked by Joanna
  102. chemistry

    will SrSO4 precipitate when .1g of Na2SO4 are added to 1L of a .01M solution of Sr

    asked by brittney
  103. College Algebra

    The illumination produced by a light source is inversely proportional to the square of the distance to the source. If a light source 5m from an object illuminates with 70 candela, what illumination would be produce if the object were mover to 12 m away?

    asked by meme
  104. English

    I still have a doubt on a few sentences. 1. They are criticizing everything that/which/no pronoun I do. Which are possible? 2. I found a toy car, whose (of which is a mistake?) flat tyre was missing. As to the comprehension you suggested to me is the last

    asked by Matthew
  105. Chemistry

    What volume of 3.0M sodium hydroxide will be needed to neutralize 2.0 L of 1.0M hydrochloric acid?

    asked by Laurie
  106. Spanish-Help Please

    I'm not sure what these questions mean and I have to answer them for homework ¿Qué necesitas para comer en cereal?does this ask what I need to eat cereal-like a spoon , bowl etc? 2. ¿Qué ríes mucho cuándo miras a los payasos?Do you laugh alot when

    asked by Ellen
  107. media

    what trend has helped hasten the homogenization of national news in the past decade? a) a rise of the Internet as a major source of news reporting b) the corporate consolidation of news media into a small number of conglomerates c) the growing popularity

    asked by tina
  108. chemistry

    A basic buffer is prepared by adding 0.3310g of NH4Cl to 1.00L of 0.2088 M NH3. Kb (NH3) = 1.8x10-5.

    asked by lara
  109. chemistry

    How man grams of nitrogen monoxide are needed to react with adequate oxygen to produce 89.6 L of nitrogen dioxide

    asked by Bob
  110. English

    1. My hobby is soccer. 2. My hobby is baseball. (Are both grammatical?)

    asked by rfvv
  111. college Algebra

    If y varies directly as x^2 and y=20 when x=4, find y when x=7?

    asked by meme
  112. English paragraph writing

    I have to write these paragraphs for a writing assignment and just wasn't sure is I was doing it right. Need some advice!! ASSIGNMENT: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and

    asked by alma
  113. English

    Writeacher, I urgently need your help to check a few things. 1) Which of them is the girl to whom you are enganged? 2) Paris, which I visited las year, is one of the most romantic cities I've been to/to which I've been/where I've been/where I've

    asked by Matthew
  114. Chemistry

    25.0 grams of ammonium sulfide reacts with 25.0 grams of copper nitrate A) which reactant is limiting B) how much of the Excess reactant remains C) what is the theoratical yield

    asked by Kira hughes
  115. Statistics

    With a spent average of $90.00 with a standard deviation of $15.00, what is the maximum amount that you can spend and still be in the lowest 20%?

    asked by Diane
  116. principles of physics

    Find the density of a 4.2- kg solid cylinder that is 13 cm tall with a radius of 5.0 cm.

    asked by Christie
  117. Math

    A department store purchases a dress for $50. To sell the dress to customers, the price is marked up by 15%. You hand the clerk $70. How much change will you get back?

    asked by Tiffani
  118. math

    mario took inventory of fish food in his store. there were 1 5/8 pounds of goldfish food, 9/16 pounds of beta food, and 17/20 pounds of tropical fish food. about how many pounds of fish food were there in all? 3 pounds 2 1/2 pounds 2 pounds 1 1/2 pounds

    asked by yes
  119. Calculus

    Evaluate the limit. The limit as x approaches 0 of (x-sin(x))/(x-tan(x))

    asked by Michael
  120. Quadratic Formula

    3x^2-x-16=0 Use the quadratic formula to solve this.

    asked by Hayley
  121. physics

    Neona is on a tricycle A, combined mass 62 kg, and Alyssia is on tricycle B, combined mass 54 kg. They are initially at rest, but they push off of each other. What is Neona's speed immediately after the push if Alyssia's is 4.2 m/s?

    asked by Becky
  122. Opinion

    Which class would be better(easier) to take Earth Science or Astronomy?

    asked by Marie
  123. Physics

    Michelle pulls a 14.5 kg wheeled cart with a rope along a flat road. The rope makes a 28.0 degree angle with the horizontal. If the tension in the rope is 350 N and she pulls the cart 56.7m how much work does Michelle do?

    asked by Becky
  124. physics

    A volume of gas v at temperature T1 and pressure P, is enclosed in a sphere. It is connected to another sphere of volume v/2 by tube and stopcock. This second sphere is initially evacuated and the stopcock is closed. If the stopcock is now opened and the

    asked by Joanna
  125. science/chemistry

    I have the answer but how do you solve for this problem: What is the freezing point of a sugar solution prepared by dissolving 375.00g of sucrose (342.3g/mol) in 1500.0g of water (Kf of water=1.86 degrees Celcius)?

    asked by Fisher
  126. Calculus and vectors

    Could someone explain to me how I can find the area/perimeter/volume of a rectangular prism if I am given R^3 points. For example find area of rectangular prism given pts (2,3,4)(5,3,2), similar to this.

    asked by Jake
  127. physics

    A child loses his balloon, which rises slowly into the sky. a) If the balloon is 21.5 cm in diameter when the child loses it, what is its diameter at an altitude of 1150 m? Assume that the balloon is very flexible and so surface tension can be neglected.

    asked by maria
  128. PHYSICS*****

    A block of mass m = 300 g is released from rest and slides down a frictionless track of height h = 59.4 cm. At the bottom of the track the block slides freely along a horizontal table until it hits a spring attached to a heavy, immovable wall. The spring

    asked by Steve
  129. PHYSICS~~~

    How much work is needed to push a 142- kg packing crate a distance of 2.45 m up an inclined plane that makes an angle of 20 o with the horizontal, when inclined plane is frictionless?

    asked by Steve
  130. arithmetic

    The pet shop owner told jean to fill the new fish tank 3/4 full of water.Jean filled the tank 9/12 full.What fraction of the tank does she still need to fill?

    asked by kelly
  131. Psych

    If an iq test has high predictive validity, then a. a psychologist can accurately guess what score someone will get before he or she has started the test. b. students who get good score on the test will get even better scores if they take the test again c.

    asked by Ashley
  132. trig

    Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help

    asked by Help
  133. Math

    A conical paper cup for holding popcorn has a radius of 3 in. and height of 6 in. How much paper, to the nearest square inch, is used to make the cup?

    asked by Hanu
  134. media

    which media source is most critical in setting news agendas? a) the Internet b) tv c) magazines d) radio e) newspaper

    asked by tina
  135. MATH

    THERE ARE 20 PAGES IN JAMAL BOOK HE READ 1/5 OF THE BOOK HOW MANY PAGES DID HE READ

    asked by GABRIEL
  136. Types Of Business Writing

    Assigment: write a business letter according to the background. Background:Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human

    asked by Shawna
  137. algebra 1b

    the speed of a passenger train is 18mph faster than the speed of a freight train. The passenger train travels 310 miles in the same time it takes the freight train to travel 220 miles. Find the speed of each train passenger train mph and freight train mph

    asked by kay
  138. Chemistry

    The density of a 40.0% by weight aqueous solution of NaOH is 1.432 g/cm3 what is the molarity of NaOH?

    asked by Kailey
  139. AP Prep World history

    Can someone please help me write a comparison essay on the Roman Empire and Han Dynasty? I need 2 similarities (paragraphs) and 2 differences (2 more paragraphs). I was thinking for a similarity that both empires were attacked by Germanic tribes.

    asked by Anonymous
  140. physics please help!!

    1. A 26.0-Ω resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 150-V generator. (a) At what frequency is the current a maximum? 2.A series circuit contains only a resistor and an inductor. The voltage V of the generator

    asked by linds
  141. p

    A weightless rod, with length d = 5.5 m, supports three weights with masses m1 = 3 kg, m2 = 14 kg, and m3 = 4 kg as shown. Where is its center of gravity?

    asked by opp
  142. Chem 2

    Checking to see if I did this right? Titration of HN03 titrated with NaOH ending result is 1.38. Titration A, endpoint pH = 8 is pKa or pKb= 1.38x106=5.861 and Titration of NH03 titrated with KOH ending results 1.54. Titration B, endpoint pH = 7 is KaorKb=

    asked by Debbie
  143. Spelling

    I'm sorry I typed the question wrong. The question is: Make three cluster words using f l

    asked by Allison
  144. chemical

    what's the vapor pressure of naphthalene in the 50 degree centigrade?

    asked by soodabe
  145. math

    Simplify th radical expression by rationalizing the denominator: 2(square root)108 / (square root) 180y Please show me how to set up and how to solve.

    asked by Jane
  146. physics

    A roller coaster (425 kg) moves from A (5.00 m above the ground) to B (28.0 m above the ground). Two nonconservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long

    asked by loweri
  147. Science Help

    How does a periscope work when it has 2 mirrors and light? A.Lenses refract the light B.Light bends as it travels and mirrors bend the light more C.Light travels in a straight line and the mirrors reflect the light D.Lenses and mirrors reflect the light

    asked by Derrick
  148. Math

    Write a list of 5 numbers that have a median of 71,300.

    asked by Shelly
  149. Chemistry

    Consider the equation: A + 4B=3C+3D, when equal masses of A and B are reacted, which is limiting? My possible answers are: A)if the molar mass of A is less than the molar mass of B, then B must be limiting. B) If the molar mass of A is greater than the

    asked by Jessica
  150. Algebra

    The table shows the minimum wage for three different years. Year 1940, 1968,1997 wages for 1940 $.025, 1968 $1.60, 1997 $5.15 estimate the minimum wage in 1976 and compare it to the actual value of $2.30 and estimate when the minimum wages was $1.00. If

    asked by Rochelle
  151. math

    1) Why should we clear fractions when solving linear equations and inequalities? Demonstrate how this is done with an example. Why should we clear decimals when solving linear equations and inequalities? Demonstrate how this is done with an example.

    asked by jess
  152. to writeacher

    do you know anything about writing

    asked by Celest
  153. Art

    for my art homework my teacher has set me to create a poster to promote my locatility and im not shore how to do it. e.g Eastbourne i have to do it on

    asked by Alex B
  154. Spelling

    The homework assignment is first the child has four spelling words to write five times and memorize and then the homework assignmen says make three clusters of words using fl for example fly.

    asked by Allison
  155. statistic 125

    have three coins, two of which are fair and the other is a double header .suppose a coin is selected using random selection and tossed twice,one after the other.if i got two heads what is the probability that the coin that was selected was the double

    asked by vanessa
  156. Pre-Cal

    Find the distance from point (-1, 3) to the line 5x- 4y= 10.

    asked by Adrianna
  157. ALGEBRA

    SOLVE BY ALGEBRAIC METHOD Y=3X 1/3X + 1/2y =11

    asked by BIBIN
  158. algebra

    When you solve a system of equations by the substitution method, how do you determine whether the system of equations is inconsistent?

    asked by algebra
  159. help

    how do you learn a different language in a month

    asked by Celest
  160. chemistry

    1. Divide the ions below into 2 groups, those that tend to form soluble compounds and those that tend to form insoluble compounds. (〖Pb〗^(+2), 〖Na〗^+, 〖Nh4〗^+, 〖Ag〗^+, 〖NO3〗^-, 〖OH〗^-, 〖Cl〗^-, 〖CO3〗^(-2), 〖PO4〗^(-3)) 2.

    asked by jhong
  161. 8-12 sentence paragraph

    I have to write these paragraphs for a writing assignment and just wasn't sure is I was doing it right. Need some advice!! ASSIGNMENT: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and

    asked by alma
  162. Math

    Probability Review , How many different numbers can you make with the digits 2,3,and 4 if you can use each digit as many times as you want?

    asked by Zoey
  163. ALGEBRA

    You have 480 grams of a radioactive kind of tin. If its half-life is 10 days, how much will be left after 30 days?

    asked by Anonymous
  164. Trig

    cos(3x)=-1

    asked by One Directioner
  165. Trig

    4sin^(2)x-3=0

    asked by Help
  166. PHYSICS*****

    Two forces parallel to the x axis do 18.1 J of work on a small tray while moving it 21.8 m in the x direction across a gym floor. One of the forces has a value of +3.69 N in the x direction. What is the other force?

    asked by Steve
  167. pre-algebra

    you have twice as many dimes as you do nickels and two more quarters than nickels that equals $2.50

    asked by t
  168. Psych

    I have a test that accurately predicts who will learn statics quickly. My test has a. predictive validity but not reliability b. content validity but not predicitive validity c. predictive valisity and reliability d. neither validity nor reliability

    asked by Ashley
  169. math

    Simplify. (-3u)^5

    asked by mike
  170. physics 30

    An electron that has a distance of 10.0 cm , is accelerated from rest through a potential difference of 4.50 kV before it enters a region between perpendicular elecric and magnetic fields. The electron moves into a region between positively charged plate

    asked by sarah
  171. physics 30

    A charged particle with mass m, and a charge q, is moving through a perpendicular magnetic field of strength B at a velocity,v. The particle is deflected through a curved path with a radius of 15.0 cm. If the speed of the same particle is doubled and the

    asked by sarah
  172. social studies

    What does apartheid mean?

    asked by Khabo
  173. physics

    What is the efficiency of a block and tackle that lifts a 500N resistance a height of 1m when an effort of 80N moves through a distance of 10m? What is the input work? output work?

    asked by Xandra
  174. Physics

    Tim and Ray have the same mass and they both climb up the same hill. Tim climbs the hill in 12 minutes and Ray in 22 minutes. a) Who does more work? b) Who develops the most power?

    asked by Becky
  175. biology

    Food that is consumed often enters the body in the form of large organic molecules, such as proteins and starches. Prior to entering cells, however, these large molecules must be broken down into smaller molecules. For example, proteins are digested into

    asked by Monique
  176. Trig

    Solve Sinx=Cos2x-1 for all values between 0 and 2pi

    asked by dfg
  177. Physics

    1. How is it that you could list five different speeds you are going at this moment? 2. A ship with a mass of 1.0 x 10^4 kg has engines capable of an acceleration equal to - 2 m/ s^2. Suppose the ship approaches the dock at a speed of 20.0 m/ s. How much

    asked by Anonymous
  178. double integrals

    Combine the following two integrals into one by sketching the region, then switching the order of integration. (sketch the region) im gonna use the S for integral sign..lol SS6ycos(x^3-3x)dxdy+SS6ycos(x^3-3x) And the first integration limits for x are

    asked by Mary
  179. algebra 1b

    There are approximately 31lbs of muscle for every 41lbs of body weight of a certain animal for a 96-lb animal, how much of the weight is muscle?

    asked by kay
  180. physics

    How does an incandescent light bulb produce light?

    asked by daniela
  181. Basic Chemistry

    The density of a 40.0% by weight aqueous solution of NaOH is 1.432 g/cm3 what is the molarity of NaOH?

    asked by Alice
  182. Math

    What is the mean of these numbers 15, 50, 15, 0, 100

    asked by Chasity
  183. phy

    How much work is done by the motor in a CD player to make a CD spin, starting from rest? The CD has a diameter of 12.8 cm and a mass of 15.7 g. The laser scans at a constant tangential velocity of 1.23 m/s. Assume that the music is first detected at a

    asked by opp
  184. Spelling

    What does it mean when the homework says: Make three F L cluster words example fly?

    asked by Allison
  185. physics so confused

    1. A 26.0-Ω resistor, a 12.0-µF capacitor, and a 17.0-mH inductor are connected in series with a 150-V generator. (a) At what frequency is the current a maximum?

    asked by linds
  186. physics

    You have three metals - lithium, aluminum, and mercury. Their work functions are: 2.30, 4.10eV, and 4.5eV respectively. Light with a frequency of 1 x 10^15 Hz is incident on all three metals. Determine (a) which metals will emit electrons and (b)the

    asked by daniela
  187. maths

    If I am a proper fraction with a denominator of 20 and my decimal equivalent is 0.6 then what am I

    asked by jade
  188. statistics

    we need to estimate the percentage of businesses that plan to hire additional employees in the next 60 days. How many randomly selected employers must we contact in order to create an extimate in which we are 98% confident , with an error of 5%

    asked by Kathy
  189. computer science

    write a program to select the classes that you are taking(Ex. Computer Science) .When the button is clicked, the program should print the names of the computer language studied. If no, check boxes have been selected, the sentence "No language studied

    asked by cindy
  190. math

    solve for sine theta of 3.14/3

    asked by jb
  191. math

    a rectangular garage has a floor area of 240 square feet. What are all the possible length and width

    asked by elfi
  192. physics

    A supertanker filled with oil has a total mass of 14.1·10^8 kg. If the dimensions of the ship are those of a rectangular box 271 m long, 93.1 m wide, and 93.1 m high, determine how far the bottom of the ship is below sea level (ρsea = 1020 kg/m^3).

    asked by maria
  193. nursing

    what is the significance of HIPPA regulations to healthcare information management

    asked by chinedu
  194. ALGEBRA1

    Consider the equation 4x + 6y = 48. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Part 2: On your own paper, graph this equation using the

    asked by Brianna
  195. ALGEBRA1

    Consider the equation 4x + 6y = 48. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Part 2: On your own paper, graph this equation using the

    asked by Brianna
  196. math

    At a fair malina ays a game in which she tosse a coin and then spins a spinner that has 5 different colors.How Many possible outcomes are there for malina?

    asked by Shelly
  197. math

    At a fair malina ays a game in which she tosse a coin and then spins a spinner that has 5 different colors.How Many possible outcomes are there for malina?

    asked by Shelly
  198. Does this make sense?

    Puddles splashing against my feet Does that make sense? (especially the word "against") Is there a better way to write/phrase that?

    asked by Cicilia
  199. English

    Can you please check my sentences? Thank you. 1) I've been out for lunch. I've written a lot of tests at school. I've spent a lot of time revising for my English test. 2) I've bought a new lap top computer. I've participated in an athletic competition. 3)

    asked by Matthew
  200. English paragraph writing

    I have to write a paragraph of 8-10 sentences convincing my cousin that she has the skills to tackle the job of assistant to my boss, list 3 or 4 responsibilities,,

    asked by Alma
  201. College Algebra

    if y vaires directly as x^2 and y=20 when x=4, find y when x=7?

    asked by meme
  202. Chemistry

    Calcium carbonate decomposes on heating producing potassium nitrate and oxygen. Write a balanced equation for this reaction. Heating 100g of pure potasium nitrae what mass of potassium nitrate would be produced?

    asked by JOJO
  203. English

    This is what I meant in the previous sentence. Thank you. 1)I want to say that if this person knows the password, he can check the names of the students who have already sent mail to their parterns.

    asked by Matthew
  204. Algebra

    Find the zero of f(X)= (x-5)/(x+2)

    asked by anonymous
  205. MATH

    IF 12 OUT OF 27 STUDENTS HAVE DOGS HOW MANY DOGS WOULD ONE STUDENT HAVE?

    asked by dw
  206. math

    When px^3 – 2px^2 + 3x – p is divided by (x – 1), the remainder is -5. Find p.

    asked by rick
  207. to writeacher

    i read matthew's post earlier. what is the partnership thing up to friday. how can i join. well i am in 4th grade, but i want to start getting myself encouraged.

    asked by Celest
  208. math

    Let f(x) = ax^3 + bx^2 + 3x – 4. If f(x) is divided by (x – 2), the remainder is 2. When it is divided by (x – 1), the remainder is -2. Find a and b.

    asked by rick
  209. MATH

    SUBTRACT 4 4/7 AND 3 2/3

    asked by ANA
  210. Social Studies

    Explain the effects that the Iron Curtain had upon Europe in the years after 1955

    asked by Lashonda
  211. Science

    How does a periscope work when it has 2 mirrors and light? A.Lenses refract the light B.Light bends as it travels and mirrors bend the light more C.Light travels in a straight line and the mirrors reflect the light D.Lenses and mirrors reflect the light

    asked by Derrick
  212. math

    how do i add fractions

    asked by yes
  213. Algebra

    A line goes through points (-5,12) and (1,3). What is the slope of the line?

    asked by Elysa
  214. Algebra

    Which statement describes how to find the nth term in the sequence? 15, 32, 49, 66, 83, ... A. subtract 2 from 17 times the term number B. add 2 times the term number and 15 C. add 2 and 17 times the term number D. subtract 17 times the term number from 15

    asked by Elysa
  215. PreAlgebra

    If X = 2 inches, Y = 4 inches, and Z = 4 inches, what is the surface area of the box? A. 32 inches2 B. 64 inches2 C. 48 inches2 D. 88 inches2

    asked by Elysa
  216. Geometry

    How do I find the area of a right triangle with a hypotenuse that measures 39 cm anad a leg that measures 15 cm?

    asked by Cody
  217. to allison

    list of words with Fl or Fl in it: flat flood floss flesh inflate fly flying flution flap flames flame flavor flavors flight flights fleas floor flip flips flock I hope that works. if you need more help. post me .im a 4th grader

    asked by Celest
  218. income tax

    On July 15, 2009, Travis purchased some office furniture for $20,000 to be used in his business. He did not elect to expense the equipment under §179 or bonus. On December 15, 2011, he sells the equipment. What is his cost recovery deduction for 2011? A.

    asked by Andy
  219. psychology

    What are some developmental theories of childhood that can be applied to the movie "The Bad Seed"?

    asked by Anonymous
  220. chemistry

    Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH

    asked by blair
  221. Social Studies

    We're doing a Civil War Project and my person is Charles C. Ward Can anyone help me find information about him with a picture?

    asked by running.from.myself
  222. algebra

    how would u factor 2x^2 +13x-7 =27? please help

    asked by jessica
  223. Math

    81a2 + 36a + 4 factor

    asked by Tamra
  224. social studies

    Who led each army in war? South_____________ North Winfield Scott

    asked by stephanie
  225. social studies

    The South was known as the__________. The North was known as the__________.

    asked by stephanie
  226. English

    Writeacher, as to sentence 2 should I stick to the present perfect? Paris, which I visited last year, is one of the most romantic cities TO WHICH I've been in which I've been (is a mistake) which I've been to I've been to I've visited. where I've been (I

    asked by Matthew
  227. Algebra 2

    (3x^4-2x^3+4x-5) divided by (x^2+4) quotient and remainder

    asked by Nancy
  228. Physics

    Kenya finally loses her cool and punches her teacher. The teacher weighs 85 kg. He sees the punch coming and begins to back up at a speed of 0.60 m/s. After Kenya clocks him, he is moving backwards at a speed of 0.82 m/s. If the contact time of Kenya's

    asked by Becky
  229. Algebra

    Explain the ways to factor ax^2+bx+c=0 and show examples. Thanks!

    asked by Claire
  230. Physics

    Bryant is fired from a cannon with an initial speed of 14 m/s. If his mass is 80 kg what is his initial kinetic energy?

    asked by Becky
  231. algebra

    solution set for 9r+19r=56

    asked by donald
  232. math

    They say that 2+2 can equal 5.How?

    asked by Sa5m
  233. nutrition

    Making a transceiver from sccrtah is a pretty awesome project. It can take a while, though.There's a lot of theory of operation that factors in physics and engineering.I'm a radio technician, so I'm biased, but if I were a science teacher I would be amazed

    asked by YHlFMKuHz
  234. statistics

    At the end of the festival the organizers estimated that a family of participants spent an average of $90.00 with a standard deviation of $15.00. What’s the probability that the mean amount spent will be NO more than $75?

    asked by Diane
  235. Calculus I

    Find the derivative of f(x) = sin^2 (e^sin^2 x) I wonder if I'm right F'(x) = 2cos(e^sin^2 x) (sin^2 x e^sin^2 x -1)

    asked by Priscilla
  236. anthropology

    is the changing American belief from tanned skin being healthy to tanned skin being related to skin cancer is an example of culture being: cumulative. diffusive. adaptive.

    asked by Anonymous
  237. Revised paragraph of 8-12 sentences

    I have to write these paragraphs for a writing assignment and just wasn't sure is I was doing it right. Need some advice!! ASSIGNMENT: You’ve applied for a specific job in your field of study. The Human Resources Department arranges an interview and

    asked by alma
  238. Algebra 2

    (4x^4-4x^2-x-3)divided by(2x^2-3) quotient an remainder?

    asked by Nancy
  239. English

    The last exercise was a comprehension I downloaded from the internet site you suggested to me. (esl-lounge) I just wanted to know if my answers were correct. 3. The first time I ever met Clare, she was working in a clothes store in Chicago. I was feeling

    asked by Matthew
  240. Math

    Ways to make 1/4

    asked by Khys
  241. English

    Writeacher, I can't vary the sentence, I just have to say which one is correct. Paris, which I visited last year, is one of the most romantic places in which I have ever been/I have ever been to. (I have to determine whether the correct preposition is IN

    asked by Matthew
  242. information literacy

    paleobotany, which of the following terms listed as boarder term? paleontology, palynology, paleoclimatology, or phytogeraphy

    asked by jeanette
  243. fractions

    If you have 27 photos you give someone 1/3 and another person 2/3 how many do you have left?

    asked by jhaloni
  244. algebra

    Which inequality best represents the problem? The length of a rectangle is (x - 2) and its height is 67. The length is less than the height.

    asked by natily
  245. physics 30

    A magnet dropped through a vertical solenoid will fall at a rate that is slower than gravity, and will induce an electric current within the solenoid. which physics principle explain these phenomena ?

    asked by sarah
  246. Algebra

    If you have a rectangle and increase the length by 20% while decreasing the with by 20% what is the change equated at?

    asked by Bill
  247. algebra

    What is the value of n in the equation 12n + 8 = 11? Please submit your answer as a reduced fraction.

    asked by eric
  248. physics 30

    Draw a scenerio with a magnet and the solenoid below that would induce a flow of electrons to the right of the page in the ammeter, as shown below.

    asked by sarah
  249. maths

    i am a product. one of my number is 10. the other is 5 more than the first number. what number i am?

    asked by shah
  250. English

    Can you check this sentence, please? Thank you. Imagine to be a competitor in the Ten Tors Challenge. Refer to what you will wear and the things you'll bring with you on the challenge.

    asked by Matthew
  251. science

    True or false, at 25 degrees celsius H+ ion concentration in pure water is 7 x 10^ -7 mole per liter?

    asked by Tristan
  252. chemistry

    Calculate the pH when 75.20 mL of 0.114 M HCl is titrated with 0 ml of 0.108 M NaOH

    asked by blair
  253. Physics

    Roads seldom go straight up a mountain, they wind back and forth. Explain why this is useful

    asked by Becky
  254. physics 30

    An alpha particle moving at a speed of 5.20x10^4 m/s enters a perpendicular magnetic field with a strength of 3.0 mT. The magnitude of the acceleration of the particle as it enters the magnetic field will be a.bcx10^d m/s^2 ?

    asked by sarah
  255. Physics

    As you lift a chair to store is upside down on a desk, gravity exerts a force, mg, downward and you exert a force of the same magnitude upwards. The two forces are equal in magnitude and opposite in direction. From this is would appear that no work was

    asked by Becky
  256. Math

    Factor 15a^5-5a^2

    asked by Hanu
  257. Physics

    A blue whale materializes 11.5 km above an airless planet with an acceleration of gravity of 6.85 m/s2. What is the speed of the whale right before impact? (Work-Energy Theorem)

    asked by Becky
  258. trig

    Determine the least positive value of t for which d=0. d=cos((3pi/4)(t)) 0=cos((3pi/4)(t)) I got stuck on this step Please help

    asked by Help
  259. Math

    A sheet music cabinet is 1.4m wide, 45 cm deep and 1.5m high. What is the surface area of the cabinet, not including the open front? Express your answer to the nearest tenth of a square metre.

    asked by Hanu
  260. math

    Simon bought 6 and 1 half boxes of dounuts for his class party. each whole box contains 10 dounuts. how many dounuts did simon bring to his class?

    asked by yea leen
  261. pcm

    sir ple. tell me how to make 9v dc motor how many coil turns i have to make.

    asked by kumar
  262. math

    If a rectangular has 54 feet im volume and 6 feet im im length and 3 feet in width what is the height

    asked by alexis
  263. Res/341

    examples of magazines or newspaper articles you would consider to be an advantage?

    asked by anita
  264. math

    dina made 13 book covers she used nearly 3 feet of paper for each cover. about how much paper did she use in all?

    asked by Anonymous
  265. MATH

    12 DOGS IN THE PARK 2 OF THEM WERE DAMATIANS WHAT FRACTIONS WERE DALMATIANS

    asked by GABRIEL
  266. Biology

    List 3 features of catalysts.

    asked by Jill
  267. Trigonometry

    solve Sinx=Cos2x-1 for 0¡Üx

    asked by dfg
  268. Law

    I am studying law and I want to know how to file a complaint against someone in the DA's office??

    asked by Anonymous
  269. chemistry

    are compressive strength and brittle the same thing..if not then what is the difference?

    asked by sara
  270. math

    h worked the following problem incorrectly. Part 1) In which line was the mistake made? Part 2) Show your work and give the correct answer? Line 1 40 ÷ 5(3 − 1) − 4 Line 2 40 ÷ 5(2) − 4 Line 3 40 ÷ 10 − 4 Line 4 4 − 4 Line 5 0

    asked by paige
  271. Pre-cal

    Does the equation x^2+x-12/x+2 have holes?

    asked by Monique
  272. Ms. Sue help!!!

    Is 87 rounded to 90 or 85? I have to round to nearest fifth

    asked by Zack
  273. chemistry

    Given 2.00L of a buffer containing 0.338 M CH3COOH and 0.093 M CH3COONa. Ka(acetic acid) = 1.8 x 10-5. Calculate the pH after the addition of 0.004 moles NaOH.

    asked by reichel
  274. History

    I'm doing a project on name change in south africa so I'd like to know why the name pretoria was changed to tshwane and why did they change it to tshwane??? and why Pietersburg was changed to polokwane and why did they change it to polokwane

    asked by Nina
  275. Chemistry

    Ok i need a little help. I have the answer to this question but i need to know how the teacher got the answer. How many grams of water are in a 100g of a 30% sugar solution? My answer is 70.

    asked by Sharon
  276. to ms.sue

    today we are coming up with 5 fractions that has 3 different prime numbers. will 56/84, 93/99, 45/65, 73/64, or 84/92 work. which one? P.S- can you be my private tutor? If you say yes, can we you help me every Fridays at 4:00. If Im not online on Friday at

    asked by Celest
  277. histroy

    I'm doing a project on Name changing so I'd like to know what are the financial implications of a name change? And what are the practical implications of a name change

    asked by Khabo
  278. Calculus

    I'm having trouble reversing the order of integration of ∫∫dxdy from a=0 to b=2(3)^(1/2) for x and c=y^(2/6) to d=(16-y^2)^(1/2) for y. I graphed the region of integration and that still doesn't really help me. i got approximately 7.9 for the

    asked by Brandon
  279. math

    the problem is -9x+1=-80. At the end I cant figure out if it is a negative or positive?

    asked by shelbie
  280. Business Com.

    . Which of the following best describes this sentence from a congratulations message? Congratulations on your well-deserved promotion to Vice President of Operations! (Points: 5) Sincere and enthusiastic Selfish-sounding Wordy and stuffy Obviously

    asked by Clark
  281. to ms.sue

    today we are coming up with 5 fractions that has 3 different prime numbers. will 56/84, 93/99, 45/65, 73/64, or 84/92 work. which one? P.S- can you be my private tutor? If you say yes, can we you help me every Fridays at 4:00. If Im not online on Friday at

    asked by Celest
  282. algebra 1b

    please help A sample of 127 firecrackers contained 8 duds. How many duds would you expect in a sample of 2413 firecrackers, how many duds would you expect in a sample of 2413 firecrackers

    asked by kay
  283. physics

    explain how low temperatures are produced using adiabatic demagnetisation

    asked by swapnali
  284. health

    Need help in answering this question How do physical changes during old age impact on the client?

    asked by Lisa
  285. to ms.sue or wrieacher

    today we are coming up with 5 fractions that has 3 different prime numbers. will 56/84, 93/99, 45/65, 73/64, or 84/92 work. which one? P.S- can you be my private tutor? If you say yes, can we you help me every Fridays at 4:00. If Im not online on Friday at

    asked by Celest