nan

Most popular questions and responses by nan
  1. math

    Please someone show me how to work this one out? Suppose Caroline is a cinephile and buys only movie tickets. Caroline deposits $3000 in a bank acct that pays an annual interest rate of 20%. You can assume that this interest rate is fixed-that is, it

    asked on February 26, 2012
  2. physics

    A father racing his son has 1/3 the kinetic energy of the son, who has 1/3 the mass of the father. The father speeds up by 1.4 m/s and then has the same kinetic energy as the son. What are the original speeds of (a) the father and (b) the son?

    asked on October 3, 2011
  3. Quick calc question

    Find the distance, in feet, a particle travels in its first 2 seconds of travel, if it moves according to the velocity equation v(t)= 6t2 − 18t + 12 (in feet/sec). 4 5

    asked on March 3, 2016
  4. Calculus

    The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

    asked on March 11, 2016
  5. Calculus

    Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval. Give three decimal places in your answer and explain, using a graph of f(x), what the Riemann

    asked on March 10, 2016
  6. Social studies

    Social studiesWhat promise did Stalin make and break after Soviet occupation of several eastern European countries

    asked on February 20, 2019
  7. economics

    Suppose that there are three beachfront parcels of land available for sale in Asilomar and six people who would each like to purchase one parcel. Assume that the parcels are essentially identical and that the minimum selling price of each is $600,000. The

    asked on February 9, 2012
  8. Quick calc question

    Find the average value of f(x) = 1 over x over the interval [e, 2e]. the natural logarithm of 2 over e negative 1 over 2 times e squared Ln2

    asked on March 3, 2016
  9. Chemistry

    How many liters of Chlorine at STP will react with 35L of 02 at STP given the following reaction? 2Cl2(g) + 7O2(g) - 2Cl2O7(l)

    asked on May 4, 2011
  10. Calculus

    Use the Fundamental Theorem to evaluate the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx. (Your answer must include the antiderivative.) Use a graph of the function to explain the geometric meaning of the value of the integral.

    asked on March 10, 2016
  11. Calculus

    The temperature of a pan of hot water varies according to Newton's Law of Cooling: dT/dt=-k(T-A), where T is the water temperature, A is the room temperature, and k is a positive constant. If the water cools from 90°C to 85°C in 1 minute at a room

    asked on March 10, 2016
  12. Calculus

    Find the number b such that the line y = b divides the region bounded by the curves y = x2 and y = 4 into two regions with equal area.

    asked on February 23, 2016
  13. Quick calc question

    An elementary student kicks a ball straight into the air with a velocity of 16 feet/sec. If acceleration due to gravity is −32 ft/sec2, how many seconds after it leaves his foot will it take the ball to reach its highest point? Assume the position at

    asked on March 3, 2016
  14. Chemistry

    Determine the rate law, including the values of the orders and rate law constant, for the following reaction using the experimental data provided. Q + X yields products Trial [Q] [X] Rate 1 0.12 M 0.10 M 1.5 × 10-3 M/min 2 0.24 M 0.10 M 3.0 × 10-3 M/min

    asked on March 4, 2016
  15. Chemistry

    A match must be struck against an object to produce a spark to start the burning process. Once the match starts burning, it releases a large amount of energy. Describe, in detail, what the potential energy diagram would look like for the burning of a

    asked on March 4, 2016
  16. Biology

    Describe a specific type of chemical or audible communication used by animals to respond to an external stimulus and the resulting change in behavior. Explain how this type of communication may relate to natural selection within a population.

    asked on March 4, 2016
  17. Social studies

    How did President Truman guard against communist spies in AmericaK he set up immigration quotas on all people from Eastern Europe be he made all kind meanest related activities illegal in the United States see he ordered the investigation of government

    asked on February 20, 2019
  18. economics

    Suppose Caroline is a cinephile and buys only movie tickets. Caroline deposits $3000 in a bank acct that pays an annual interest rate of 20%. You can assume that this interest rate is fixed-that is, it won’t change over time. At the time of her deposit,

    asked on February 26, 2012
  19. Chemistry

    Which reaction did you perform in the hands-on activity? Describe the chemical combination that you investigated. Also describe any observations from the investigation, including the temperature change of the container.

    asked on March 4, 2016
  20. Biology

    Explain how cell membranes and their components participate in intercellular signaling. Give a specific example of cell membrane involvement in one particular type of cellular signaling.

    asked on March 4, 2016
  21. Biology

    In one signaling pathway, cyclic AMP (or cAMP) acts as a second messenger in a series of reactions that result in the relaxation of smooth muscle cells in artery walls. Define cyclic AMP and describe the role and properties of a second messenger. Then

    asked on March 4, 2016
  22. Calculus

    Express the given integral as the limit of a Riemann sum but do not evaluate: the integral from 0 to 3 of the quantity x cubed minus 6 times x, dx.

    asked on March 10, 2016
  23. Math

    Increase $980 by 5% and then decrease the result by 5%. Calculate the overall percentage loss

    asked on April 5, 2018
  24. critical thinking

    I am struggling with deciding which evaluation criteria best fits for writing a critical essay on the passage written by Stephen Chapman...Legal Drugs Unlikely to Foster Nation of Zombies. I believe that this is a non-deductive argument. I was considering

    asked on July 20, 2013
  25. chemistry

    Calculate the ionic strength of 100mM solution of Mg3(PO4)2 in 10 mM acetic buffer (CH3COONa)

    asked on December 14, 2011
  26. History

    What was Truman’s response when coming as in began spreading beyond the Soviet run Eastern Europe A he made a plate in your nine at Nations to adopt a policy of containment day he said I am military to the Soviet union to pressure them to contain

    asked on February 20, 2019
  27. math

    Problem Page Translate this sentence into an equation. 96 is the product of Han's height and 6 . Use the variable h to represent Han's height.

    asked on March 16, 2016
  28. Science

    How can you make a lever? In this activity. You will lift a hardcover book with a lever made from a marker and ruler. You need: -marker -hardcover book -tape -ruler What to do? 1/Tape a marker to the table. Place the ruler across the marker. 2/place a book

    asked on April 29, 2019
  29. Social studies

    Social studiesWhich one of the following events led to the Korean War and the invasion of Japan and to Korea be sending to you are you and forces into career to assist South Korea de the division of Korean between the Soviets and America is the formation

    asked on February 20, 2019
  30. Biology

    Describe what you observed in the hands-on animal behavior lab. What conclusions did you draw from the data? Explain your answer.

    asked on March 4, 2016
  31. Calculus

    The particular solution of the differential equation dy/dt=2*y for which y(0) = 60 is y = 60e2t y = 60 e0.5t y = 59 + et y = 30et

    asked on March 10, 2016
  32. Trig

    Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < 2pi Find: sin (v + u) cos (v - u) tan (v + u) First compute or list the cosine and sine of both u and v. Then use the combination rules sin (v + u) = sin u cos v + cos v sin u. cos (v - u) = cos u

    asked on December 29, 2006
  33. Business

    Assume that WilyMarketer is running an email campaign to acquire new customers. It is considering two options: Option A would use a high quality rental list of 100,000 email addresses. Direct costs under this option would be the rental list at $250/m and

    asked on September 25, 2012
  34. Chemistry

    Explain, in terms of collision theory, how and why a reaction’s rate changes as the reaction progresses.

    asked on March 4, 2016
  35. Calculus

    Find the specific solution of the differential equation dy/dx = 4y/x^2 with condition y(−4) = e. y equals negative 1 minus 4 divided by x

    asked on March 11, 2016
  36. Calculus

    Evaluate the Riemann sum for (x) = x3 − 6x, for 0 ≤ x ≤ 3 with six subintervals, taking the sample points, xi, to be the right endpoint of each interval. Give three decimal places in your answer.

    asked on March 10, 2016
  37. Quick calc question

    For an object whose velocity in ft/sec is given by v(t) = −t2 + 6, what is its displacement, in feet, on the interval t = 0 to t = 3 secs? 9.000

    asked on March 3, 2016
  38. Chemistry

    Fermentation of carbohydrates is a source of 1. ethanol 2. MTBE 3. methanol 4. ethers I am working on self test in the book, but the answer is not in the back of the book for this. Any help??

    asked on November 17, 2011
  39. music

    can you give me words that correspond to the count of a half-note and words that correspond to the count of a quarter note? half note (two beats) "one and, two and" quarter note (one beat) "one, two, three, four" Quarter Note: Sit, Pat, Lit Half Note:

    asked on July 20, 2005
  40. Biology

    Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.

    asked on March 4, 2016
  41. Chemistry

    Exhibit 8-1 For the following questions, consider the equation below. Zinc will react with a solution of hydrochloric acid to produce hydrogen gas: Zn(s) + 2 HCl(aq) ® ZnCl2(s) + H2(g) Refer to Exhibit 8-1. How many moles of hydrochloric acid react with

    asked on December 14, 2011
  42. Calculus

    Find the specific solution of the differential equation dy/dx = 4y/x^2 with condition y(−4) = e. y equals negative 1 minus 4 divided by x y equals negative 1 times e raised to the 1 over x power y equals e raised to the negative 4 over x power None of

    asked on March 10, 2016
  43. Biology

    Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this

    asked on March 10, 2016
  44. Biology

    Define a protein kinase and explain its role in a signal transduction pathway. Then describe what can happen if an organism's cells experience abnormal protein kinase activity.

    asked on March 10, 2016
  45. Math payment calculation

    What isrequired monthly payment for 30-years $100,000 mortgage at 12% APR. What formula?

    asked on March 25, 2015
  46. Biology

    Multicellular organisms use a variety of communication methods to coordinate cell function. Choose ONE of the following examples below and describe the cell-to-cell communication that occurs, and then describe the types of responses that result from this

    asked on March 4, 2016
  47. Algebra 2

    The sequence is defined by a recursion formula. Write the first four terms of the sequence: a_1=9; a_n=3a_n-1

    asked on August 7, 2014
  48. Chemistry

    How much heat is released when 10 g of steam at 100°C is cooled to 10 g of liquid water at 100°C? I am working on a practice test and the answer is not in the back of the book. Can some one help me. 1. 10 cal 2. 5400 cal 3. 800 cal 4. 6200 cal

    asked on November 10, 2011
  49. Calculus

    Which of the following is the general solution of the differential equation dy/dx = 2x/y? y2 = x2 + C y2 = 2x2 + C

    asked on March 11, 2016
  50. Algebra 2-Probability

    1. What is the theoretical probability of rolling a sum less than 5 using two number cubes? a.1/6 b.1/4 c.1/2 d.3/4 2. Segments parallel to the sides are used to divide a square board 3 ft on each side into 9 equal-size smaller squares. If the board is in

    asked on September 19, 2011
  51. business pre-cal

    Find the annual rate, r that produces an effective annual yield of 6.3% when compounded continuosly.

    asked on November 1, 2011
  52. Chemistry

    A solution with pH = 4 has 1. relatively high concentration of OH- 2. relatively low concentration of H3O+ 3. relatively high concentration of H3O+ 4. zero concentration of OH- Some of the answers people are giving me are confusing. I just need to know if

    asked on October 22, 2011
  53. Calculus

    The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15

    asked on March 11, 2016
  54. Chemistry

    How does the potential energy of the reactants compare to the potential energy of the products in an exothermic reaction, and where does the energy that is given off come from? Explain your answer in complete sentences.

    asked on March 4, 2016
  55. Algebra 2

    Recursion formula for a given population for each interval,n, at a time, and k is a constant called the Malthusian factor: a_n=ka_n-1(1-a_n-1) - Assuming n is measured in weeks, calculate the insect population for weeks 2, 3, and 4 if the initial

    asked on August 7, 2014
  56. Biology

    Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.

    asked on March 10, 2016
  57. Calculus

    Find the area of the region bounded by the graphs of y = 2 − x2 and y = −x.Find the area of the region bounded by the graphs of y = 2 − x2 and y = −x.

    asked on February 23, 2016
  58. business

    The Recall Computer Company has six territories, each represented by one salesperson. After extensive planning, the company determines that each territory would be expected to achieve the following percentages of total company sales for 2008: Territory

    asked on September 4, 2012
  59. Biology

    Describe the G protein receptor system and the tyrosine-kinase receptor system. Explain how these two systems are similar and how these two systems are different, in terms of structure and function please.

    asked on March 4, 2016
  60. Quick calc question

    Find the velocity, v(t), for an object moving along the x-axis if the acceleration, a(t), is a(t) = 2t + sin(t) and v(0) = 4. v(t) = t2 + cos(t) + 3 v(t) = 2 + cos(t) + 1

    asked on March 3, 2016
  61. BIOLOGY

    Describe the processes of transcription and translation and correctly identify the anticodon for the following DNA template strand-ACG TGG GCA TGA ACG TGG. Which amino acids do these anticodon represent?

    asked on July 26, 2012
  62. Chemistry

    Which equation does not fit the definition of oxidation? 1. Na ® Na+ + e- 2. C2H6 ® H2 + C2H4 3. C + O2 ® CO2 4. Ag+ + e- ® Ag Can some one help. I do not know which one. I am working on a practice test and there are no answers in the back of the book.

    asked on November 3, 2011
  63. math

    What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?

    asked on November 2, 2011
  64. Public adminstration

    The demand for desk lamp is linear,and the price of desk is $30.the demand curve for desk lamp then shifts out parallel to itself in response to increase in consumer income.prove that the demand for desk lamps become less price elastic after the shift in

    asked on August 27, 2017
  65. Calculus

    Find the area of the region bounded by the graphs of y = x, y = −x + 4, and y = 0. 1 2 4 None of these

    asked on February 23, 2016
  66. Maths

    A 73kg worker needs to transport concrete bricks using a trolley to the construction area via an elevator. The trolley weighs 1000kg while 5 concrete bricks weigh 330kg. If the elevator has a maximum capacity of 1500kg, how many bricks can the worker

    asked on February 20, 2016
  67. Algebra 2

    The sequence is defined by a recursion formula, write the first four terms of the sequence; a_1=100; a_n=1/2a_n-1 +4

    asked on August 7, 2014
  68. Algebra 2

    The sequence is defined by a recursion formula.Write the first four terms; a_1=-5; a_n=2a_n-1 +7

    asked on August 7, 2014
  69. computer science 104

    Create a method areaOfaTrapeziod when given a, b, and h (all doubles), will return the area (double) of a trapezoid. Use the equation pictured below In the code, i should 1. Create the prototype for the method 2. create the method 3. call it from the

    asked on November 3, 2011
  70. Psy

    Complate the following chart. The first column shows the name of a research method used in psychology.In the second column, write a brief description of that research method. In the column, provide a situation when this method could be applied. Scientific

    asked on January 25, 2011
  71. agriculture

    1)what is agriculture and why is it important in our daily life? can you give and describe 7 garden tools being used at home? http://en.wikipedia.org/wiki/Agriculture

    asked on June 22, 2005
  72. Hudi

    Sovereign each system by substitution.check your answer. 1/ y=x_2 y=4x+1 My answer: x_2=4x+1 2 2 x=4x+3 _4 _4 x= 1 y=x_2 y=_2 Solution:(1,_2) 2/ y=x_4 y=_x+2 My answer: x_4=_x+2 +4 +4 x=_x+6 +x +x x=7 y=x_4 y=7_4 y=3 Solution:(7,3) 3/ 2x+y=8 y=x_7 My

    asked on September 16, 2018
  73. Calculus

    The slope of the tangent line to a curve at any point (x, y) on the curve is x/y. What is the equation of the curve if (4, 1) is a point on the curve? x2 − y2 = 15 x2 + y2 = 15 x + y = 15 xy = 15

    asked on March 10, 2016
  74. Maths

    A 73kg workers need to transport concrete bricks using a trolley to the construction area via an elevator. The trolley weighs 100kg while 5 concrete bricks weigh 330kg. If the elevator has a maximum capacity of 1500kg, how many bricks can the worker

    asked on February 19, 2016
  75. math

    The Recall Computer Company has six territories, each represented by one salesperson. After extensive planning, the company determines that each territory would be expected to achieve the following percentages of total company sales for 2008: Territory

    asked on September 5, 2012
  76. chemistry

    Which HPLC mode can you choose to separate a micture of alkanes? ( Normal-phase, reversed-phase, ion-exchange, or size-exclusion)

    asked on December 14, 2011
  77. Computer science

    THIS IS C PROGRAMMING I NEED TO CREATE A METHOD! Create a method areaOfaTrapeziod when given a, b, and h (all doubles), will return the area (double) of a trapezoid. Use the equation pictured below. THANKS IN ADVANCE :)

    asked on November 2, 2011
  78. Math

    (4,57)(3,20)(2,1)(5,?) What is the missing number?

    asked on March 18, 2016
  79. Algebra 2

    The sequence is defined by a recursion formula. Write the first four terms of the sequence; a_1=0; a_n=5a_n-1 +7

    asked on August 7, 2014
  80. Algebra 2

    Year: 1, 2, 3, 4, 5 Sale:.48,1.032,2.198,4.726,10.208 (in millions) -If the sales growth pattern continues, what will be the sales for ABC Company in year 12? -What will be the total sales for ABC Company for years 1 through 12? I know that this is a

    asked on August 7, 2014
  81. Algebra 2

    For each sequence, write the next four terms 1. 36,12,4,4/3... I know that the pattern in that the term is divided by 3, but I have no idea how to calculate/write the next four terms.

    asked on August 7, 2014
  82. Chemistry

    The fusion of nuclei requires 1. slow moving (thermal) neutrons 2. a critical mass 3. heavy nuclei 4. plasma at extremely high temperatures I have another question that I do not have the answer in the back of my book. I need help. THank you

    asked on December 14, 2011
  83. math

    What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?

    asked on November 2, 2011
  84. math pre cal

    Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?

    asked on November 2, 2011
  85. math

    What is the future, rounded to whole dollars, of $25,000 after 7 1/2 years, if money earns at an annual rate of 5.75% compounded continuosly?

    asked on November 1, 2011
  86. math ratio

    The ratio of the distances a driver and a 2 iron can propel a golf ball is 5 to 4. If a golfer averages a distance of 200 yards with a 2 iron, how far should she average with a driver. I get 250 yards is that right? 5/4=x/200 is ratio set-up

    asked on October 25, 2011
  87. Chemistry

    A solution with pH = 4 has 1. relatively high concentration of OH- 2. relatively low concentration of H3O+ 3. relatively high concentration of H3O+ 4. zero concentration of OH-

    asked on October 22, 2011
  88. fractions

    what is 5 3/7 x 1/11 equal

    asked on June 7, 2011
  89. 4th grade

    What is the correct punctuation in the following sentences. Do I need quotation marks? Sarah: I am going to the game tomorrow. Mary: Okay. Do you want to ride with me?

    asked on April 19, 2010
  90. English

    Has the cat got your_______?

    asked on February 20, 2016
  91. Algebra 2

    A species of bees make hexagonal, 6 sided, honeycombs.The bees begin with on hexagonal cell then make successive rings of hexagonal cells around the initial cell. Make a table of values for the number of cells in each of the first 8 rings (1st ring, 2nd

    asked on August 7, 2014
  92. Algebra 2

    Is this sequence arithmetic, geometric, or neither? 3,10,31...

    asked on August 7, 2014
  93. Algebra 2

    Is this sequence arithmetic,geometric, or neither? -111,2.5,115.5

    asked on August 7, 2014
  94. Algebra 2

    For the following sequence, determine the indicated geometric means; 180,_,_,_,_,-5.625,... I could hardly even calculate this! Anyone have a better idea?

    asked on August 7, 2014
  95. Algebra 2

    -S_16 for the series 5+20+80+...

    asked on August 7, 2014
  96. Algebra 2

    Find the sum of the first 12 terms of this sequence: 9,4.5,2.25,... I believe that the pattern is dividing the term by 2,and I keep getting 7.9956 for the sum, but that is incorrect. Anyone understand this?

    asked on August 7, 2014
  97. america gov

    Which of the following goods would you guess that the American colonies did not export to England?

    asked on May 31, 2014
  98. calculus

    Find the volume of the solid generated by revolving the region bounded by the graphs of the equations about the x-axis. (Round your answer to three decimal places.) y = e^−x y=0 x=0 x=7 I got the answer ~10.783 Idk why it's wrong

    asked on January 22, 2012
  99. Physics

    A brass trombone

    asked on November 20, 2011
  100. math

    Your industry currently employs 3,800,000 workers. If this labor force is growing expotentially at an annual rate of 2.3% how long will it be before the number of employees reaches 5,000,000?

    asked on November 1, 2011

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