Questions Asked on
April 12, 2014

  1. CALCULUS

    Sketch the region enclosed by the given curves. y = 4/X y = 16x, y = 1X/16 x > 0 and the area between the curves

    asked by LAUERN PLEASE HELP
  2. MATH_URGENT

    Let M be the midpoint of side \overline{AB} of \triangle ABC. Angle bisector \overline{AD} of \angle CAB and the perpendicular bisector of side \overline{AB} meet at X. If AB = 40 and MX = 9, then how far is X from line {AC}?

    asked by RhUaNg
  3. CALCULUS

    Sketch the region enclosed by the given curves. y = tan 3x, y = 2 sin 3x, −π/9 ≤ x ≤ π/9 then then find the area. i can sketch but cant find correct area

    asked by LAUERN PLEASE HELP
  4. Ed tech- Plz, plz help

    The Second Industrial Revolution was not just marked by new inventions. New business practices were invented that transformed America’s economy. Between 1869–1910, the value of American manufacturing rose from $3 billion to $13 billion. The steel

    asked by Anonymous
  5. 3 questions~~~

    1. What does the term "fair-use exception" mean? (1 point) to use only material that has never been published the ability to use material made by others for educational purposes an exception to copyright restrictions for images only Educational material is

    asked by Anonymous
  6. Health

    What type of health hazard could occur by wearing jewelry while preping food?

    asked by Arthur
  7. math

    Find the interest due to the bank on a loan of $1,000 at 7.5% for 280 days.

    asked by Anonymous
  8. word problem

    If equal amounts of heat are added to equal masses of silver and copper, both at the same initial temperature, which will reach the higher final temperature? Explain your answer. The specific heat capacity of silver is 0.235 J/g degree Celsius and that of

    asked by Liz
  9. Help!

    Geothermal power would be classified as a(n) _____________________ resource because its supply will not run out. An example of a renewable and inexhaustible resource that requires the construction of dams is _________________________ energy. To solve the

    asked by Anonymous
  10. Chemistry

    If 0.50L of gaseous CH4 is burned at STP, what volume of O2 is required for complete combustion? Methane burns in oxygen to produce CO2 and H2O CH4(g) + 2O2(g) --> 2H2O(l) + CO2(g) And what volume of CO2 is produced?

    asked by Mai
  11. Physics

    A man of mass 75 kg lies on a bed of 10,000 nails. The tip of each nail has an area of 1.0 square millimeter. What pressure does the man experience? [g=10 N/kg]

    asked by Erin
  12. algebra

    Medical research indicates that the risk of having a car accident increases exponentially as the concentration of alcohol in the blood increases. The risk is modeled by R=6e^12.77x Where x is the blood alcohol concentration and R, given as a percent, is

    asked by Kira
  13. math

    Sam decides to buy 100 shares of ABC company. They cost $26.25 a share. The commission is 5% of the total price. What is Sam's total cost?

    asked by Anonymous
  14. math

    what are the mean,median,mode, and range of the data set given the altitude of lakes in feet:-11,-28,-17,-25,-28,-39,-6,and -46? A. mean= -25; median= -26.5; mode= -28; range=40 B. mean= -25; median=-40; mode=-26.5; range=28 C. mean= -26.5; median= -25;

    asked by HELP PLEASE!!
  15. Energy multiple choice question

    Which of the following samples has the highest specific heat capacity? a) A 100 kg sample of lead requires 13 000 J to increase its temperature by 1 K b) A 50 g sample of water releases 1050 J as it cools by 5 degree Celsius c) A 2 kg sample of copper

    asked by Liz
  16. Energy question

    How would a $10.00 compact fluorescent light bulb (15 W) be an overall money saver compared to an incandescent light bulb (60 W) that costs $0.50?

    asked by Liz
  17. Math

    The regular pentagon have a perimeter of 18.8 units. What is the value of X?

    asked by Kimberly
  18. birzit

    boy on the edge of a vertical cliff 20 m high throws a stone horizontally upwards with a speed of 25 m\s it strikes the ground at what horizontal distance from the foot of the cliff use g=10m\s^2

    asked by moath
  19. Chemistry

    Calculate the standard cell potential for each of the electrochemical cells? What would the answers be to something like this? If someone could work out the answer I would really appreciate it. My online hw keeps telling me its wrong.

    asked by John
  20. Physics

    5.00 kg of some liquid at 10.0 oC is mixed with 1.00 kg of the same liquid at 40.0 oC. what is the final equilibrium temperature? ignore any heat flow with the containers and/or surroundings

    asked by Jenifer
  21. math

    consider the sets. A= {distinct letters in work Keep} B= {13} C= {k,e,p} D= 1 in red + 1 in black} E= {two} F= {2} What is the cardinality of each set? A= I can not figure that one out B= 1 C= 3 D= 0 E= t,w,o F not sure Can you give me some ideas Thank you

    asked by mare
  22. CALCULUS PLEASE HELP

    The birth rate of a population is b(t) = 2300e0.024t people per year and the death rate is d(t)= 1450e0.018t people per year, find the area between these curves for 0 ≤ t ≤ 10

    asked by LAUERN PLEASE HELP
  23. math

    Hal Fritz purchased a $5,000 bond at 95. The annual interest is 6%.What was the cost of the bond? What was the annual interest? What is the yield (to nearest tenth of a percent)? please help

    asked by justin
  24. math

    The account balance on April 1st is $50.51. On April 15th a payment of $15.00 is made. On April 25th a purchase of $19.27 is made. What is the finance charge if the annual rate is 18%?

    asked by tasha
  25. Macroeconomics

    I need help to answer this question? You want to determine the profit-maximizing production quantity for a monopolist. You can ask the firm's consultant to draw the firm's revenue and cost curves, but each curve would cost you $1,000. From the following

    asked by bob
  26. Energy question

    Your friend comes across a good deal to purchase a gold ring. She asks you for advice for you to test the ring. The ring has a mass of 4.54 g. When you heat the ring with 94.8 J of energy, its temperature rises from 23.0 degrees celsius to 47.5 degrees

    asked by Liz
  27. english-poetry

    how do i write a rap about school??

    asked by sun111
  28. microeconomics

    if redstone clayworks company want to minimize their average total cost how many units should they produce?

    asked by Anonymous
  29. statistics

    In testing a new drug, researchers found that 10% of all patients using it will have a mild side effect. A random sample of 12 patients using the drug is selected. If you wanted to find the probability that exactly three will have this mild side effect,

    asked by Pista
  30. math

    Solve the equation z^2 + 2j = 0 Then convert solutions to Cartesian form.

    asked by Alice
  31. maths

    the blood alcohol concentration(BAC)in the uk is 0.08%. A well known formula for calculating BAC percentage is widmarks formula BAC%=5.14A/rW -0.015H Where A is the total alcohol consumed in ounces, W is the body weight in pounds, r isthe alcohol

    asked by susan
  32. algebra

    Use the fact that after 5715 years a given amount of carbon 14 will have decayed to half the original amount to find the exponential decay model for carbon 14. In 1947, earthenware jars containing what was known as the Dead Sea scrolls were found by an

    asked by Kristina
  33. physics

    A cylindrical conductor of radius carries a uniformly distributed current I. Show that the magnetic field within the conductor measured at a distance r from the center is given by the following equation... B= (u0Ir)/2pi a^2

    asked by John
  34. Chemistry

    Calculate ΔG∘rxn and E∘cell for a redox reaction with n = 1 that has an equilibrium constant of K = 28? What would the answer be to this? Could someone work this out for me please? ΔG∘rxn = ......kj E∘cell = ......V

    asked by John
  35. Pre-Calculus

    How to solve this problem by using logarithm: David inherits $10000 and invests in a Guaranteed Investment Certificate (GIC) that earns 6%, compounded semi-annually. How long will it take for the GIC to be worth $11000.

    asked by Hanu
  36. chemistry

    If a particular reaction absorbs 252 kJ of heat while doing 105 kJ of work at constant pressure. What are the ΔE and ΔH for values for the reaction? Is the reaction endothermic or exothermic?

    asked by Mai
  37. CHEMISTRY

    WHAT IS THE EMPIRICAL FORMULA FOR A COMPOUND THAT HAS 200GRAMS. 97.30 GRAMS OF CARBON, 16.22 GRAMS OF HYDROGEN, AND THE REST IS OXYGEN?

    asked by BILL
  38. Social Studies

    After India declared their independence, what changes occurred to the nations of South Asia? -Pakistan and Bangladesh were inspired to declare independence -Afghanistan's king was forced to resign -Sri Lanka began fighting a civil war -India was

    asked by Brady
  39. math

    pairs of jeans and want to take 2 with you. how many different ways can you pick 2 pairs of jeans.

    asked by steve
  40. math

    I have 7 different pairs of jeans and want to take 2 with me on vacation. how many different ways can you pick 2 pairs of jeans to take on vacation. sorry for not proofing before

    asked by steve
  41. math

    Tim Worker buys a new sofa for $629.95. He pays 25% down and takes an installment loan to complete the purchase. He makes 12 payments which include his principal and a $60.00 finance charge. What is the APR on his loan to the nearest tenth? The down

    asked by Anonymous
  42. Algebra

    x over 2x-5 - 5 over 6x-15

    asked by Mark
  43. Math

    We are learning about proofs. We drew lines between noncollinear points. Our table showed 2 points >> 1 line segment, 3 point >> 3 line segments, 4 points >> 6 line segments, 5 points >> 10 line seg, 6 points >> 15 line seg. etc. Write an expression in

    asked by Anon
  44. Chemistry

    Calculate pH of an acetate buffer containing 27.5 mM acetic acid (pKa is 4.74) and 50 mM sodium acetate. When a 30 mM aq solution of sodium acetate was prepared in the lab it had a pH of 8.8. Calculate the amount of acetic acid (in g) to be added to 0.5 L

    asked by Sarah
  45. Cultural Anthropology Help please!!!

    contrast the four types of subsistence strategies, being sure to include differences in lifestyle, kinship, property ownership, distribution of resources and division of labor. Thank you!

    asked by Selda
  46. math

    Sam Seller offers credit at 19% interest per year.

    asked by tasha
  47. U.S. History

    Read this passage by Booker T.Washington: I am in favor of every measure that will give to woman, the opportunity to develop to the highest possible extent, her moral, intellectual, and physical nature so that she may make her life as useful to herself and

    asked by Anne
  48. math

    a pyramid has a height of 5 inches and a surface area of 90 inches squared. A similar pyramid has a height of 10 inches what is it's surface area?

    asked by steve
  49. calculus

    in the following series x is a real number. In each case use the ratio test to determine the radius of convergence of the series. Analyze the behavior of the series at the endpoints in order to determine the interval of convergence. A) (nx^n)/(n^2 + 2)

    asked by maggie
  50. Energy question

    how could you determine the efficiency with which the mechanical energy of a pendulum is conserved?

    asked by Liz
  51. Algebra

    Bobo bought a 1 ft squared block of cheese. He needs to cut it into 3 in. cubes. The block is yellow outside but green on the inside. How many 3 in. cubes does it have? How many of the cubes have no yellow face, one yellow face, 2 yellow face, etc. Please

    asked by Sarah
  52. Chemistry

    If the titration of a 25.0 mL sample of calcium hydroxide requires 34.45 mL of 0.100 M perchloric acid, what is the molarity of the base? 2 HClO4(aq) + Ca(OH)2(aq) → Ca(ClO4)2(aq) + 2 H2O(l)

    asked by John Cook
  53. Algebra

    log base 2 x + log base 2 (x-7)=3 solving steps?

    asked by Peggy
  54. information literacy

    . In the keyword search on EDSeek's Home Page, enter the following statement: NASA* AND Mars*. Based on the results from this search, choose the best answer to this question. Which of the following is not a listed document type?

    asked by Cassandra
  55. word problem

    the function f(x)= 34.1 Ln x + 117.7 models the number of U.S. Internet users, f(x) in millions, x years after 1999. By which year will there be 250 million Internet users in the U.S.?

    asked by Kristina
  56. financial management

    2. If you have an opportunity cost of 10%, how much should you be willing to invest now to have $8,000 accumulated in 10 years?

    asked by lori
  57. Chemistry

    To treat a burn on your hand, you decide to place an ice cube on the burned skin. The mass of the ice cube is 10.9 g, and its initial temperature is -12.0 °C. The water resulting from the melted ice reaches the temperature of your skin, 29.6 °C. How much

    asked by Karen
  58. Physics

    Which of the following is the equation of the circle with centre (-1.5, 0.5) and radius 3? A. 2x^2 + 6x + 2y^2 - 2y - 13 = 0 B. 2x^2 - 6x + 2y^2 + 2y - 13 = 0 C. 2x^2 - 6x + 2y^2 - 2y - 13 = 0 D. 2x^2 + 6x + 2y^2 - 2y - 23 = 0 E. @x^2 + 6x + 2y^2 - 2y -14

    asked by Erin
  59. microeconomics

    if nancy pelosi declared that clay firepits are causing global warming, demand for firepits shrink substantially in the U.S, especially in California. Firepits prices fall worldwide to 65 dollars. Now the manager of redstone should produce how many units?

    asked by Anonymous
  60. Physics 141

    A 71-kg skier is going down a slope oriented 37° above the horizontal. The area of each ski in contact with the snow is 0.13 m2. Determine the pressure that each ski exerts on the snow.

    asked by dakota22
  61. Life science, tourism, geography, and maths litera

    what careers can i do with this subject

    asked by thubelihle
  62. science

    Amount of force =52pascal,pressure =13newton,find the area.

    asked by H S B
  63. Physics (Rotation)

    In the figure, wheel A of radius rA is coupled by belt B to wheel C of radius rC. The angular speed of wheel A is increased from rest at a constant rate α. Find the time needed for wheel C to reach angular speed ω assuming the belt does not slip. (Hint:

    asked by Anon
  64. Astrophysics

    The Earth formed at a redshift of z∼0.53. That means that when our world was young, the universe was quite a bit smaller than it is today. The nearest galaxies to our own are around 10 kpc (kilo-parsecs) in size, lie at a distance of around 1 Mpc from us

    asked by Anonymous
  65. Physics

    An object of mass 50 g floats in a liquid of density 2.5 g/ml. When the object is placed in a liquid of density 2.0 g/ml, it sinks to the bottom of the container. What is the force that the object exerts on the bottom of the container? [g = 10m/s^2 =

    asked by Erin
  66. math

    A shopkeeper sells a mattress and makes a profit of 10% on the cost price. If he had sold the mattress for $150 less,he would have incurred a loss of 40% on the cost price. Find the cost price of the mattress.

    asked by Anonymous
  67. math

    At a boutique,an evening gown is marked at a profit of 40% on the cost price. It is sold in a sale at 20% discount. (a)Find the actual profit as a percentage of the coast price. (b)If a customer bought it for $448, find the actual profit

    asked by Anonymous
  68. maths

    the rate of the fall of an object can be determined by the formula h=1/2gt^2 where h is the height, g is the acceleration due to gravity and t is time in seconds. If a gun is fired 5 feet above the ground and level to the ground, how far would the bullet

    asked by susan
  69. maths

    a bullet weighing 8.1g is found to have a kinetic energy of 1 kJ, find its velocity

    asked by susan
  70. maths

    the blood alcohol concentration(BAC)in the uk is 0.08%. A well known formula for calculating BAC percentage is widmarks formula BAC%=5.14A/rW -0.015H Where A is the total alcohol consumed in ounces, W is the body weight in pounds, r isthe alcohol

    asked by susan
  71. maths

    assuming the brain is shaped as a hemispere, find the circumference of the brain if the colume is 1.3KG

    asked by susan
  72. Maths

    Solve equation in elimination method (3a=5-1 and 3a=5a+3

    asked by Roman
  73. maths

    pls help me to do this sum.... THE DISTANCE BETWEEN THE SCHOOL AND THE HOUSE OF A STUDENT'S HOUSE IS 1 KM 875M.EVERYDAY SHE WALKS BOTH WAYS.FIND THE TOTAL DISTANCE COVERED BY HER IN 6 DAYS?

    asked by LALY
  74. water chemistry

    35.0 mL sample of 0.150 M acetic acid (HC2H3O2) (Ka = 1.8 x 10-5) is titrated with 0.150 M NaOH solution. Calculate the pH after 17.5 mL volumes of base have been added

    asked by matsobane frans
  75. science

    Identify and discuss the main safety legislation applicable to the installation, commissioning operating and maintaining the tube swaging machine.

    asked by Andy
  76. econ

    You want to determine the profit-maximizing production quantity for a monopolist. You can ask the firm's consultant to draw the firm's revenue and cost curves, but each curve would cost you $1,000. From the following list indicate which curves you will

    asked by bob
  77. chemistry

    It is possible to manipulate the solubility of some compounds through pH adjustments. What is the appropriate pH that will yield a Molar solubility for Mg(OH)2 of 2.51 x 10-8? The Ksp for Mg(OH)2 is 1.2 x 10-11. (Hint: you may assume the concentration of

    asked by bekah
  78. math

    For the system of linear equations below, use graphing to determine in which quadrant the solution lies. x+2y=-2 -2x+y=14 Quadrant III Quadrant I Quadrant II Quadrant IV

    asked by sofia
  79. chemistry

    A 1.0 L solution has 10.00 grams of CaCl2 dissolved in it. What is the Molar solubility of AgCl in this same solution? The Ksp for AgCl is 1.6 x 10-10 at this temperature. Hint: watch out for the common ion again.

    asked by bekah
  80. Food and Nutrition

    How is "Healthy Ice-Cream Alternate Sandwich" a healthy recipe?? Ingredients: 10-12 ripe bananas 1/.5 cup of strawberries 22 graham crackers Procedure: 1)Mash the bananas and make a mixture with the strawberries and bananas 2)Freeze the mixture 3)put the

    asked by Lisa
  81. algebra

    F(t)= 30000 1+20e^-1.5t Describes the number of people, f(t), who have become ill with influenza t weeks after the initial outbreak in a town with 30,000 inhabitants. a. How many people became ill with flu when the epidemic began? b. How many people were

    asked by Kristina
  82. algebra

    How long, to the nearest day, will it take $25,000 to grow to $500000 at 9% annual interest compounded monthly?

    asked by Kira
  83. math

    There are 3 white marbles and 7 blue marbles in a bag. Jamie will randomly pick two marbles out of the bag without replacing the first marble chosen. What is the probability of Jamie picking two blue marbles

    asked by Anonymous
  84. physics

    In one type of mass spectrometer, ions having the same velocity move through a uniform magnetic field. The spectrometer is being used to distinguish 12C+ and 14C+ ions that have the same charge. The 12C+ ions move in a circle of diameter 25 cm. (a) What is

    asked by Homer
  85. Chemistry

    Calculate the standard cell potential for each of the electrochemical cells? What would the answers be to something like this? If someone could work out the answer I would really appreciate it. My online hw keeps telling me its wrong.

    asked by John
  86. Algebra

    Medical research indicates that the risk of having a car accident increases exponentially as the concentration of alcohol in the blood increases. The risk is modeled by R=6e^12.77x Where x is the blood alcohol concentration and R, given as a percent, is

    asked by Seth
  87. Algebra

    F(t)= 30000/1+20e^-1.5t Describes the number of people, f(t), who have become ill with influenza t weeks after the initial outbreak in a town with 30,000 inhabitants. a.) How many people became ill with flu when the epidemic began? b.) How many people were

    asked by Seth
  88. chemistry

    1. Calculate pH of an acetate buffer containing 27.5 mM acetic acid (pKa is 4.74) and 50 mM sodium acetate. When a 30 mM aq solution of sodium acetate was prepared in the lab it had a pH of 8.8. Calculate the amount of acetic acid (in g) to be added to 0.5

    asked by Nick
  89. art 101

    What kind of light brings the greatest appearance of depth in a photo.

    asked by pharah
  90. Criminal Justice

    Which of the following would be of greatest concern from an ethical standpoint? A. The number of homicide victims in a given place during a given time period. B. The legal elements of the crime of homicide. C. Whether capital punishment is a justifiable

    asked by Pat
  91. alegebra

    solve this equation -2(6v-8)-2=13-12v

    asked by michael
  92. maths

    assuming the brain is shaped as a hemispere, find the circumference of the brain if the volume is 1.3KG

    asked by susan
  93. English

    Which literary term best matches this? A group of four rhyming lines.

    asked by Anonymous
  94. Biology

    Im stumped... These answers I cannot find, please and thank you :) 1) In males, the primary target of FSH is the ______. 2)Testosterone and other androgens are secreted by the______. 3)During meiosis, when synapsis occurs, corresponding maternal and

    asked by Elise
  95. Algebra

    If Sam takes 6 hours to paint a house, and Pat takes 12 hours to paint the same house; how long with it take the 2 men to paint the same house together? What is the correct formulary?

    asked by Angie
  96. alegebra

    slove this equation 4.4(4+5k)=145.2

    asked by michael
  97. alegebra

    solve this equation 4.5(3v-0.8)-0.83=61.72

    asked by michael
  98. Chemistry

    If a particular reaction evolves 192 kJ of heat while expanding from 1.00 L to 2.00 L at 125 atm of pressure, what is the overall energy change for the system?

    asked by Mai
  99. Criminal Justice

    Question: The primary purpose of ethical injury is to: A. find all the possible solutions to a problem. B. critically reflect upon how we live and the choices we make. C. learn about the philosophies of the past 2000 years. D. Memorize relevant codes of

    asked by Pat
  100. Statisttic

    If 3 cards are drawn, without replacement, from a deck of 52 cards, the probability of getting 3 7's is [x]. Round to 5 decimal places.

    asked by Anonymous
  101. maths

    2x+y=7 x(2)-xy=6 pl plz help me someone

    asked by krissy
  102. Sociology

    If Andrea's parents have her take violin lessons, take a foreign language and attend science camp in hopes of her developing skills so she can get into a competitive college, is that an example of human capital or cultural capital? I was leaning towards

    asked by Jared
  103. Epi

    a. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a confounder.

    asked by dorbor
  104. Calculus

    For what values of x is the graph of y=x e^{-4 x} concave down?

    asked by JAYZ
  105. chemistry

    The breakdown of p-nitrophenylphosphate at pH 2.6 is a first order hydrolysis process.. a) 12.5mmol of NPP were dissolved in 200mL of water at 77degrees celcius after 50mins the amount of NPP dropped to 10mmol. Calculate the average rate of this reaction

    asked by N
  106. Social Studies

    What characteristic did the Mauryan and Mughal empires share? -Both helped spread Buddhism -Both helped spread Islam -Both embraced the idea of religious tolerance -Both were begun by Aryan people

    asked by Jack
  107. Math

    Kaylee got a 15% raise. She now earns $23 an hour. How much did she earn before the raise?

    asked by Katherine
  108. Math

    Ruth Anne used 0.8 meters of cord to trim a picture frame. How many more frames of this size can she trim with 13.5 meters of additional cord.

    asked by ???????
  109. math

    you have a spinner labeled 1 through 10. you spin once. what is p (divisimble by 2)

    asked by steve
  110. Math

    Integrate (5x^2 + 3x - 2)/(x^3 + 2x^2)

    asked by Anonymous