chris

Newest questions and responses by chris
  1. probability

    As in an earlier exercise, busy people leave the park according to a Poisson process with rate λ1=3/hour. Relaxed people leave the park according to an independent Poisson process with rate λ2=2/hour. Each person, upon leaving the park, makes a decision

    asked on November 27, 2018
  2. probability

    When you enter the bank, you find that there are only two tellers, both busy serving other customers, and that there are no other customers in queue. Assume that the service times for you and for each of the customers being served are independent

    asked on November 27, 2018
  3. probability

    Consider three lightbulbs each of which has a lifetime that is an independent exponential random variable with parameter λ=1. The variance of the time until all three burn out is: = Recall that the variance of an exponential with parameter λ is 1/λ2.

    asked on November 27, 2018
  4. math

    Add the following vectors using the Component law. a. 9 m/s [N30°E] and 2 m/s [N 60°E]. b. 3 N in a direction 15° south of west and 4 N in a direction 12° east of south.

    asked on November 13, 2018
  5. Math

    The vertices of a sandbox are P(12, 14), Q(12, 17), R(16,17), and S(16,14). The coordinates are measured in feet. What is the perimeter of the sandbox?

    asked on October 23, 2018
  6. Thesis topic

    Hi what are the research gaps if i am goign to make an undergraduate thesis about children in conflict with the law? pls help

    asked on September 22, 2018
  7. Physics

    a ball is released from the top of a 67.0 m high building. At the same instant a second ball is shot straight up from the ground with an initial speed of 20.0 m/s, directly below the point where the first ball was dropped. Ignore air drag and calculate a.

    asked on August 13, 2018
  8. Physics

    Earth is a spherical body, of radius 6,376 km, which completes a full rotation about its axis in 24.0 h. how long (in hours) should the day on Earth be so that a person at the equator is able to float freely above the ground?

    asked on August 13, 2018
  9. Physics

    A square plate has a side length of 1.20 m. A 24.0-N ~ m torque is applied about an axis perpendicular to the plate through its center. If it experiences an angular acceleration of 6.25 rad/s2, calculate the mass of the plate.

    asked on August 13, 2018
  10. Physics

    A firecracker travels straight up at 75.0 m/s and explodes into two pieces. The smaller piece carries one third of the firecracker’s mass and shoots off horizontally at 48.0 m/s west. Determine the speed and direction of the other piece directly after

    asked on August 13, 2018
  11. Probability

    Assume you take the bus to campus. About every 5 times (1 in 5) you take the bus in the morning it is full when it comes to your stop and it takes no more passengers. This means that you have to wait for the next available bus. To your surprise, 3 days in

    asked on August 12, 2018
  12. Math

    I'm looking for a example for 1 to 2 ratio sentence

    asked on August 8, 2018
  13. Check my calc please

    Use the graph of f(t) = 2t + 2 on the interval [-1, 4] to write the function F(x), where f(x) = x∫-1 f(t) dt a. F(x) = x^2 + 3x b. F(x) = x^2 + 2x - 12 (my answer) c. F(x) = x^2 + 2x - 3 d. F(x) = x^2 + 4x - 8

    asked on July 2, 2018
  14. Calculus check

    Help me check my calculus 1. The graph of f '(x) is continuous, positive, and has a relative maximum at x = 0. Which of the following statements must be true? a. The graph of f is always concave down. b.The graph of f is always increasing. c. The graph of

    asked on July 2, 2018
  15. Calculus

    Can someone help me check my answers 1. Find the range of the function f(x) = x∫-6 √36-t^2 dt - [-6, 0] - [0, 6] - [0, 9π] (my answer) - [0, 18π] 2. Use the graph of f(t) = 2t + 2 on the interval [-1, 4] to write the function F(x), where f(x) =

    asked on July 2, 2018
  16. Calculus

    The differential equation dy/dx = (y-2)/(y-1) I.produces a slope field with horizontal tangents at y = 2 II.produces a slope field with vertical tangents at y = -1 III.produces a slope field with columns of parallel segments A. I only B. II only C. I and

    asked on July 2, 2018
  17. Social Studies

    What Washington industries have experienced the most growth in recent decades because of technological innovation? Select all that apply. (4 po coal mining video games computer software fish hatcheries food canning genetic engineering grape farming lumber

    asked on June 7, 2018
  18. chem

    A student uses (2.1000x10^-1) grams of oxalic acid dihydrate. Her titration required (2.63x10^1) mL of NaOH to reach the endpoint. What is the M of her NaOH solution. Put in scientific notation w/ 3 sig figs. How would you do this through dimensional

    asked on June 7, 2018
  19. Parametrics

    A bowling ball is rolled down and alley with a constant velocity of 1.4m/sec. at an angle of 86deg. To the starting line. The position of the person throwing the bowling ball can be represented by the point (0,0). Where is the ball after 8 seconds?

    asked on May 16, 2018
  20. Math

    A passbook savings account has a rate of 8%. Find the effective annual yield if the interest is compounded quarterly.

    asked on May 14, 2018
  21. Math

    Kim and Mario wish to have $30,000 available for a kitchen remodel in 3 years. How much money should they set aside now at 7% compounded monthly in order to reach their financial goal? Round your answer UP to the nearest cent.

    asked on May 14, 2018
  22. math

    Linda had started with 1 yard of fabric and used 5/8, how much fabric would be left

    asked on May 9, 2018
  23. Learning another language

    Whats a good site to learn German? if anyone could help thanks

    asked on May 1, 2018
  24. American Goverment

    .Use of the Internet for grassroots organizing, political commentary, and fund-raising has become a standard due to developments in the __________ presidential campaigns. a.1996 b..2000 c.2004 d.2008 C. 2004?

    asked on April 25, 2018
  25. American Goverment

    In the pluralist model, bargaining among groups is carried on by: a.one leader. b.few leaders. c.many leaders. d.voting. D

    asked on April 25, 2018
  26. Math

    Geometric And Arithmetic Sequences a store manager plans to offer discounts on some sweater acording to this sequence: $48, $36, $27, $20.255,... What would be the price of a sweater after 8 discounts? Is this an arithmetic or geometric sequence?

    asked on April 23, 2018
  27. Physics

    In Pittsburgh, children bring their old jack-o-lanterns to the top of the Carnegie Science Center for the annual Pumpkin Smash and compete for accuracy in hitting a target on the ground. Suppose that the building is 23m high and that the bulls-eye is a

    asked on April 11, 2018
  28. Physics

    Can I get help with these questions? The beautiful Multnomah Falls in Oregon are approximately 206m high. If the Columbia river is flowing horizontally at 2.90m/s just before going over the falls, what is the overall velocity of the water when it hits the

    asked on April 11, 2018
  29. English

    Write a sentence using the word: programme to show the meaning.

    asked on March 24, 2018
  30. englies

    Using a “Cuase-and-Effect Chain” explain why leaves change color and fall from the tree. Used details from the story.

    asked on January 29, 2018
  31. Physics

    When sugar is poured from the box into a bowl , the rubbing of the sugar grains create a static charge that repels the grains , and causes the sugar to go flying out in all directions. If each of two grains acquires a charge of 3.0x10^-11 C at a separation

    asked on January 26, 2018
  32. Math

    One day 176 people visited small art museum. The ratio of members to nonmembers that date was 5 to 11. How many people who visited the museum that day were nonmembers ?

    asked on January 5, 2018
  33. HS english 1

    Please help i have tried a lot of other sites and they couldnt help me. Question (essay style): Read this excerpt from Little Brother and answer the following questions in complete sentences using proper grammar and punctuation: Marcus manages to flag down

    asked on November 20, 2017
  34. Chemistry

    Ca+N-->Ca3N2 -What is limiting reagent? -Mass of calcium nitride formed when 50.0g of calcium reacts with 50.0g of Nitrogen? -Excess? CAN SOMEONE DOUBLE CHECK MY ANSWERS: Calcium is limiting reagent. Mass of Ca3N2: 68.4g Ca3N2 Excess: 38.4N left over.

    asked on November 17, 2017
  35. math

    a recent survey of 8 randomly selected social networking sites has a mean of 13.1 million visitors for a specific month. the standard deviation is 4.1 million find the confidence interval of the true mean

    asked on November 13, 2017
  36. Chemistry

    H2SO4+2NaOH->2H2O+Na2SO4 How many molecules of water are produced when 12g of sodium sulfate are created? Is this answer correct: 75Lx6.02^23= 452molecules H2O

    asked on November 11, 2017
  37. Chemistry

    H2SO4+2NaOH->2H2O+Na2SO4 1.) How many grams of H2SO4 are needed to produce 135L of water? 2.) How many molecules of water are produced when 12g of sodium sulfate are created?

    asked on November 11, 2017
  38. Language arts

    I need help on researching hurricanes can you help me thanks.

    asked on November 4, 2017
  39. Science

    i need help i need to find 3 ways to conserve fish

    asked on November 1, 2017
  40. MATLAB

    Consider the following approximation: f′(x) ≈ Af(x − 2h) + B f(x − h) + C f(x) + D f(x + h) + E f(x + 2h). 1) Determine the values of the constants A, B, C, D, and E so that the approximation is as accurate as possible. What is the order of the

    asked on October 15, 2017
  41. Physics

    A rail gun uses electromagnetic energy to accelerate objects quickly over a short distance. In an experiment, a 2.00 kg projectile remains on the rails of the gun for only 3.500e-2 s, but in that time it goes from rest to a velocity of 4.00×103 m/s. What

    asked on October 2, 2017
  42. Algebra

    What do A & B stand for in algebra can some one please explain this to me because I'm really confused:/

    asked on September 29, 2017
  43. Science

    What is the goal of technology A.to understand the natural world B.to improve how devices operate C.to improve how people live D.to understand how systems operate My answer A

    asked on September 14, 2017
  44. Math

    Consider the two savings plans below. Compare the balances in each plan after 7 years. Which person deposited more money in the​ plan? Which of the two investment strategies is​ better? Yolanda deposits ​$550 per month in an account with an APR of

    asked on August 17, 2017
  45. Math

    At age 25 someone sets up an IRA​ (individual retirement​ account) with an APR of 4%. At the end of each month he deposits ​$85 in the account. How much will the IRA contain when he retires at age​ 65? Compare that amount to the total deposits made

    asked on August 16, 2017
  46. Math

    Find the savings plan balance after 2 years with an APR of 9​% and monthly payments of ​$250 Can someone help me? Idk if im right but do I multiply $250 by 9% an then divide?

    asked on August 12, 2017
  47. Math

    Suppose a man is 30years old and would like to retire at age 65 ​Furthermore, he would like to have a retirement fund from which he can draw an income of ​$50,000 per yearlong dash—​forever! How can he do​ it? Assume a constant APR of 5​%. He

    asked on August 10, 2017
  48. Math

    Consider the two savings plans below. Compare the balances in each plan after 7 years. Which person deposited more money in the​ plan? Which of the two investment strategies is​ better? Yolanda deposits ​$550 per month in an account with an APR of

    asked on August 10, 2017
  49. Math

    Find the savings plan balance after 33 years with an APR of 9​% and monthly payments of ​$200

    asked on August 8, 2017
  50. Math

    Sal and Cal both work for the same company making ​$55,000 each in annual salary. Sal deposits 5​% of her salary to her 401k plan and the company matches 25 cents for each dollar contributed to the 401k up to the 5​%. Cal deposits nothing into his

    asked on August 8, 2017
  51. math

    Suppose that ​$4,000 is invested in a 6​-month CD with an APY of 1.6 What is the corresponding​ APR?

    asked on August 5, 2017
  52. American History

    How were American politics and society shaped by the Cold War?

    asked on July 27, 2017
  53. Life orientation

    Impact of risk behaviour. Social and emotional

    asked on July 21, 2017
  54. American History

    How does Goldwater's conservative vision for America compare to Johnson's "Great Society"?

    asked on July 18, 2017
  55. American History

    What were some of the social and political changes of the 1960s?

    asked on July 18, 2017
  56. Religious Studies

    Was Jesus trans?

    asked on June 28, 2017
  57. Math

    i am a 6 digit number 8 ones, 5 hundreds 2 thousands, 19 ten thousands. What is the answer?

    asked on June 27, 2017
  58. Math

    Teach me the method for this question: if a car travels 180km on 18 litres of petrol, then on a full 40litre - tank it should travel.

    asked on June 18, 2017
  59. Math(Calculus)

    Im having a real difficult time solving this question. Find the absolute extrema of the function. h(x) = e^x^(2) - 4 on [-2,2] Absolute maximum value: at x = Absolute minimum value: at x =

    asked on April 26, 2017
  60. physics

    An electron is located at the origin. A proton is located at (2, 0). Find the electric field direction at (1, 1).

    asked on April 14, 2017
  61. History

    How has the united states used economic pressure to promote the spread of democracy

    asked on April 12, 2017
  62. math

    NEED HELP NOW TALKING TEST NOW HELP!!! Triangle ABC is an equilateral triangle. how many lines of symmetry does triangle ABC have? a 0 b 1 c 3 d 6

    asked on March 24, 2017
  63. Physics

    Physics lab need help with sources of error. In our lab, we had to use carbon tape and a spark timer to find out the maximum velocity and maximum acceleration of a high school student. I'm having a hard time to find sources of errors. Any ideas or insights

    asked on March 17, 2017
  64. Math

    To find the difference of 7 - 3 5/12 how do you rename the 7?

    asked on March 3, 2017
  65. Math check

    What is 6 5/6 - 5 1/2 This is my answer:1 2/6 or simple form: 1 1/6

    asked on March 3, 2017
  66. Math

    Why is it necessary to rename 4 1/4 if you subtract 3/4 from it

    asked on March 2, 2017
  67. Science

    What do we mean when we say, "The speed of the car is 90 km/h."?

    asked on February 28, 2017
  68. Math

    On a centimter dot grid, draw all pissible rectangles with area of 12 sq cm and sides whose length s are whole centimeters. Label the lengths of two adjacent sides of each rectangle.

    asked on February 10, 2017
  69. Physics

    3 identical point charges Q are placed at the vertices of equilateral triangle (length of each side is equal to 2m) if Q=60uC, what is the magnitude of Electrostatic force on any one of the charges.

    asked on February 9, 2017
  70. math

    Laura inherits $30,000 and decides to invest part of it in an education account for her daughter and the rest in a 10-year CD. If the amount she puts in the education account is $5,000 more than twice the amount she puts in the CD, how much money does

    asked on February 5, 2017
  71. 6 th grade

    Bill's average score for 10 test was 88. If his lowest score, 70, is not counted, what was his average for the remaining test?

    asked on February 1, 2017
  72. Maths

    Breed of 580 mils per hour drive from 21 1/2 hours

    asked on January 27, 2017
  73. science

    Conversion of energy from one form to another usually releases what

    asked on January 26, 2017
  74. Math

    If the 15th and 16th term of an arithmetic sequence are 99 and 92 respectively then the 5th term is? Studying for math final and I cannot figure this out

    asked on January 17, 2017
  75. math

    If Larry worked 411/2 hours this week and spent 1/3 of his time hauling material, how much actual time did Larry spend hauling

    asked on December 30, 2016
  76. Bio

    if you knew makeup of a specific proteins in a cell , how would you determine the particular dna code that coded for them

    asked on December 21, 2016
  77. Criminal Justice CRJ 220

    What is an example of thinking in an exclusive way, which may inhibit the process of intellectual growth and moral development?

    asked on December 16, 2016
  78. Algebra II

    Bill's Sporting Goods makes baseballs and softballs. In a given week they can manufacture no more than 70 balls. When setting equipment, they have to make at least 20 baseballs and at least 10 softballs. They make 6$ for each softball sold and 5$ for each

    asked on December 13, 2016
  79. Algebra

    Can you please help me with this problem: The x-intercept of a line has a value of -7/6 and a y-intercept of 7. Another line has a slope that is twice the slope of the first line an a y-intercept that is 15 more than the first lines' y-intercept. What is

    asked on December 10, 2016
  80. Statistics (Math 210)

    Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) According to a local chamber of commerce, in 1993, 5.9% of local area residents owned more than five cars. A local car

    asked on December 5, 2016
  81. Statistics (Math 210)

    Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) A manufacturer claims the standard deviation of salt in their meat is .5. An SRS of 18 samples shows the standard deviation

    asked on December 5, 2016
  82. Statistics (Math 210)

    Hi there, I am doing my statistics homework and am having trouble with a few problems. I sincerely appreciate any help I receive! :) A manufacturer claims that the mean lifetime of its lithium batteries if 1200 hours. A homeowner selects 25 of there

    asked on December 5, 2016
  83. Math

    Two debts ---- the first of $800 due six months ago and the second of $1400 borrowed one year ago for a term of three years at 6.5% compounded annually ---- are to be replaced by a single payment one year from now. Determine the size of the replacement

    asked on December 4, 2016
  84. Math

    The sum of 24 and Vanessa's age is 40

    asked on November 23, 2016
  85. Stats

    4 teachers selected from 13 parents and 5 teachers

    asked on November 22, 2016
  86. Arithmetic

    If pencils are bought at 70 cents per dozen and sold at 3 for 20 cents, the total profit on 6 dozen is?

    asked on November 16, 2016
  87. Arithmetic

    a folding chair regularly sells for $29.50. how much money is saved if the chair is bought at a 20% discount?

    asked on November 15, 2016
  88. science

    a bullet is shot from a springfield rifle with a speed of 3,015 ft/s. assuming the bullet moved at a constant velocity, what is the time required for the bullet to strike a target 4,146 meters away

    asked on November 9, 2016
  89. Marh

    What is 3 pints to 15 pints?

    asked on November 9, 2016
  90. MATH

    An inch on a map represents 200 miles. On the same map, a distance of 375 miles is represented by? A. 1 1/2 inches B. 1 7/8 inches C. 2 1/4 inches D. 2 3/4 inches Thank you for your help.

    asked on November 9, 2016
  91. Arithmetic

    a boy sold $88.50 worth of stationery. If he received a 33 1/3% commission, what was the amount of his commission?

    asked on November 7, 2016
  92. arithmetic

    on a certain day, the temperature range from -2f to 10f. what is the difference between the high and low temperatures for that day?

    asked on November 7, 2016
  93. Statistics

    "Suppose two independent samples have been collected.Based on a sample of 26 from the first population, you observe 14 successes. The second sample of size 26 had 17 successes. What is the critical value for a 85% confidence interval that compares these

    asked on November 5, 2016
  94. Arithmetic

    A man paid $42.30 for gasoline in may, $38.60 in June, and $43 in July. What was the average monthly cost for gasoline?

    asked on November 5, 2016
  95. Arithmetic

    A man owned 75 shares of stock worth $50 each. The corporation declared a dividend of 8 percent payable in stock. How many shares did he then own? 81 shares but how?

    asked on November 5, 2016
  96. Math

    Six gross of special drawing pencils were purchased for use in a department. If the pencils were used at the rate of 24 a week, the maximum number of weeks that the 6 gross of pencils would last is?

    asked on November 5, 2016
  97. math

    A dealer bought some bicycles for $4,000. He sold them $6,200, making $50 on each bicycle. How many bicycles were here?

    asked on November 5, 2016
  98. math

    A man owned 75 shares of stock worth $50 each. The corporation declared a dividend of 8%, payable stock. how many shares did he then own?

    asked on November 5, 2016
  99. math

    A man owned 75 shares of stock worth $50 each. The corporation declared a dividend of 8%, payable stock. how many shares did he then own?

    asked on November 3, 2016
  100. science

    kinsey leaves her house to exercise and run straight down a long street for 5.00 meters at a constant rate of 3m/s then turns and run back toward her house for 2 meters what is her average speed in m/s what is her displacement what is her average velocity

    asked on November 1, 2016

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