Popular questions and responses by Joyce
  1. math

    If a basketball player consistently shoots 80% from the free throw line and she takes 25 free throw shots throughout the course of a game, how many free throws can she be expected to make?

    asked on April 27, 2013
  2. statictics

    According to classical test theory, if the observed variance of a test is 50 and the true variance is 40, what is the estimated reliability of the test? Answer a. 0.40 b. 0.50 c. 0.80 d. 0.90

    asked on October 27, 2013
  3. physics

    An ideal gas is confined to a container with adjustable volume. The pressure and mole number are constant. By what factor will volume change if absolute temperature doubles

    asked on July 14, 2011
  4. English

    The new drug proved to be highly efective,it has no side effects. A. PROPERLY CONSTRUCTED SENTENCE B. COMMA SPLICE C. LACKS PARALLEL PARTS D. HAS UNCLEAR PRONOUN Please post your answer, and we'll discuss it. A Please check this site.

    asked on October 19, 2006
  5. math

    Lexi and Marie had $250 altogether. After Lexi spent 2/5 of her money and Marie spent $40, they had the same amount of money left. how much money did Lexi have in the beginning ?

    asked on October 21, 2011
  6. UMA

    math what is the answer to this 732,178+167-542,137

    asked on May 23, 2015
  7. science

    describe an experiment to demonstrate that an expired air contains carbon dioxide

    asked on April 3, 2019
  8. Science

    what power is expended by a weightlifter when lifting a 60kg barbell a vertical distance of 1.1m in a time interval of 2.0s

    asked on February 9, 2013
  9. phsyics

    an 8g bullet is shot into a 4kg block at rest on a frictionless horizontal surface. the bullet remains lodged in the block. the block movies into a spring and compresses it by 3cm. the force constant of the spring is 1500N/m. the initial speed of the

    asked on November 6, 2008
  10. Chemistry

    Please Help me solve this question If 0.22grams of a divalent metal is deposited when a current of 0.45ampere is passed through a solution of a salt for 25 minutes. Using appropriate electrodes, calculate the relative atomic mass of the metal.

    asked on May 31, 2020
  11. Math

    The length of the side QR of a triangle PQR is 14.5cm

    asked on January 15, 2015
  12. eng/135

    Revising Messages: Conciseness Revise the following sentences, using shorter, simpler words. 9. The antiquated calculator is ineffectual for solving sophisticated problems

    asked on January 13, 2014
  13. Math

    What is the sum of the first 40 consecutive odd numbers?

    asked on August 19, 2012
  14. Cost accounting

    The company is planning to sell product z for $10 a unit. Variable costs are $6 a unit and fixed cost are $100,000. What must total sales be to break even?

    asked on December 10, 2010
  15. English

    What,if anything,is wrong with the following sentence? Do you see the pretty girl standing next to the car with the red boots on? 1. properly constructed sentence 2. misplaced part 3. run-on 4. fragment I THINK THE CORRECT ANSWER IS:Number 1 Am I Correct?

    asked on October 19, 2006
  16. Human Resources

    Can you think of any cultural problems U.S. hospitals might encounter as a result of recruiting nurses abroad?

    asked on November 18, 2012
  17. algebra

    1 cm to the third of aluminum weighs 2.7 grams if a sheet is 0.003 8 find the weight

    asked on September 27, 2014
  18. Math

    Which of the following is the LARGEST unit of volume? Kiloliter or Hectoliter or Dekaliter or Deciliter

    asked on October 26, 2013
  19. Business Math

    An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and net date ?

    asked on May 21, 2013
  20. Math 7th

    A meteorologist predicts an 80% chance of rain. Is this an example of experimental probability? Please explain why

    asked on November 30, 2017
  21. Physics

    . Determine the temperature, T that results when 150 g of ice at 0°C is mixed with 300 g of water at 50°C. Given heat of fusion, l of water = 3.35 × 105 J/kg, cwater = 4186 J/kg∙oC.

    asked on August 11, 2017
  22. physical chemistry

    a mixture of toluene and water boils at 90 degrees. calculate the vapour pressure at this temperature. Assume the atmospheric pressure to be 760 mmHg

    asked on March 19, 2017
  23. Algebra

    Hello...can you please let me know if I worked this problem correctly: 10Z2^ + 8z - 7 = 16z2^ + 48z - 12 0 = 6z2^ + 30z - 5 a = 6 b = 30 c = -5 x = 30 + or - (30 2^ -4(6)(-5) / 12 x = -30 + 31.937 / 12 = .161 x = -30 - 31.937 / 12 -5.161 Am I on the right

    asked on February 20, 2017
  24. Chem

    A beaker containing 25.0 mL of 0.360 M H2SO4 spills on the counter. How much baking soda, NaHCO3, will be needed to neutralize the acid? H2SO4 (aq) + 2 NaHCO3 (s) -> Na2SO4 (aq) + 2 H2CO3 (l) GIVEN: - I've converted 25.0 mL to 0.025 L H2SO4. - 0.360 M

    asked on May 11, 2016
  25. math,eng,phy,chem,bio,geography,economics

    in an experiment of oxgen to hydrogen in water molecule. 9g of iron were heated in a current of hydrogen,6.5g of iron and 2.8g of water were formed using this data. determine the proportion by mass of oxygen to hydrogen in water

    asked on January 17, 2016
  26. Physics

    Maria throws a ball straight up with an initial velocity of 10 m/s. What is its velocity at the highest point? What is its velocity when it returned to the elevation from where it is thrown ? What is its acceleration at the highest point? What is its

    asked on September 19, 2015
  27. Science

    How do u make this in a lewis dot structure? C2H3Cl3

    asked on March 7, 2011
  28. algebra

    A contagious disease is infecting residents of a town of 7,300 residents. The number of residents infected t days after the disease has begun is given by the function f(t)= 7300/1+500e-0.5t How many residents are infected with the disease after 6 days?

    asked on November 21, 2010
  29. physics help

    1. A roller coaster car starts from rest and rolls down a frictionless track, reaching speed fv at the bottom. a. If you want the car to go two times as fast at the bottom, by what factor must you increase the height of the track? b. Does your answer to

    asked on November 7, 2008
  30. 1 more phyiscs for today

    sorry for asking for help agen. a baseball catcher puts on an exhibition by catching a .150kg ball dropped from a helicopter at a height of 100m above the catcher. if the catcher "gives with the ball for a distance of .75m while catching it, what average

    asked on November 6, 2008
  31. Physics

    A bridge that was 5.0m long has been washed out by the rain several days ago. How fast must a car be going to successfully jump the stream? Although the road is level on both sides of the bridge, the road on the far side is 2.0m lower than the road on this

    asked on October 19, 2008
  32. QUESTION--Please Help

    What,if anything,is wrong with this sentence? Do you advise me to go to college or that I should get a job after high school? A. Properly constructed sentence B. Misplaced part C. Lacks parallel parts D. Run-on I think the answer is C, am I CORRECT? Joyce,

    asked on October 19, 2006
  33. English

    What,if anything, is wrong with this sentence? To be fit,you should get enough sleep, exercise regulary,and eat a healthy diet. 1.properly constructed sentence 2. comma splice 3.Lacks parallel parts 4.Unclear pronoun That sentence looks fine to me.

    asked on October 19, 2006
  34. math

    The cost of manufacturing a semi-circular window is the cost of the glass pane together with the cost of the framing material. When ordering this window, a customer specifies the length of the base of the window, shown as l l . If the cost of the framing

    asked on February 4, 2019
  35. Physics

    At the moment car A starts from rest and accelerates at 4.0 m/s^2, car B passes it, moving at a constant speed of 28 m/s. how long will it take car A to catch up with car B?

    asked on October 11, 2018
  36. Physics

    Emily rides her horse 48 km in 3 hours.What is her average speed in kilometers per hour?

    asked on February 2, 2018
  37. Maths

    The cash price of a gas cooker is sh. 9000, a customer bought the cooking gas by 15 monthly instalments of sh. 950 each installment. Calculate the carryin charge

    asked on September 30, 2017
  38. math

    One hundred meters of fencing is available to enclose a rectangular area next to a river. Give a function A that can represent the area that can be enclosed in terms of x. Function : A = Answer x2 + Answer x

    asked on August 29, 2017
  39. math

    How many acres will a 1.3 cu feet per second irrigate

    asked on August 1, 2017
  40. Math

    A room measured 6 feet wide and 14 feet long. If they use blue and white tiles that are exactly 1 square foot, how many tiles will they need

    asked on August 17, 2016
  41. math

    a piece of carpetis in the shape of an isosceles trapezoid with a height of 30 inches and bases 40 and 60 inches. what is the area of the carpet?

    asked on February 24, 2016
  42. Math

    I just filled my car with gas we can go 25 miles on 1 gallon of gas and you can hold 14 gallons if I travel exactly 36 miles a day how many days can I drive before I have to fill it up again

    asked on January 28, 2016
  43. math,eng,phy,chem,bio,geography,economics

    if 8.99g of scandium and 8.99g of oxygen react to give scandium oxide and a leftover of oxygen 3.65g. what percentage of scandium oxide is the oxygen

    asked on January 17, 2016
  44. Van de graaf question

    A moving belt in a van de graaf generator transfers charge from one point to another. If the belt is 0.1 m. wide, moves with a velocity of 10 m/s and carries a surface charge of +10^-5 C/m^2, determine the current that this generator represents.

    asked on December 31, 2015
  45. Electric field

    In a simple electric circuit 1.6 J of energy are supplied to a lamp in 0.10 s. The charge transferred through the circuit is o.20 C. The average current is?

    asked on December 31, 2015
  46. Electric field

    The acceleration of an electron in an electric field with a strength of 7.0 N/C is?

    asked on December 31, 2015
  47. Electric field

    A 9.0 V potential difference exists between two metal plates which are 1.8 x 10^-3 m. apart. The acceleration of an electron that enters the region between these plates will be?

    asked on December 31, 2015
  48. Electric field

    The potential difference between the anode and the cathode of a vacuum tube is 2.0 x 10^2 V. Free electrons originate at the cathode with negligible speed and move to the anode. The speed with which the electrons arrive at the anode is?

    asked on December 31, 2015
  49. Electric field

    when an electron is accelerated through a potential difference of 1 V, the kinetic energy at the end of the field is?

    asked on December 31, 2015
  50. physics

    At a distance of 2.0 m. from a +8.0 x 10^-6 C charge, the magnitude and direction of the electric field will be?

    asked on December 31, 2015
  51. Physics

    A 100 kg. man decides to go bungee jumping off a bridge. The bungee cord has a relaxed length of 10.0 m, and acts as a perfect spring with a stiffness constant of 80 N/m. What is the maximum distance below the bridge that he will reach? (he will fall 10.0

    asked on December 30, 2015
  52. Physics- Ballistic pendulum

    A simple pendulum is made from a 2 kg. block of wood suspended from a light cord of length 1 m. When the pendulum is hanging in such a way that it is stationary and vertical, a bullet is shot horizontally into the block of wood where it sticks. The bullet

    asked on December 30, 2015
  53. Physics

    A stone mass M thrown straight up with initial velocity V reaches a height H. A second stone of mass 2M, thrown straight up with an initial velocity 2V. What will be its height?

    asked on December 30, 2015
  54. chemistry

    how long would it take a 250# block of ice to melt in a room of 68 deg F

    asked on December 17, 2015
  55. physics

    A softball having a mass of 0.25 kg is pitched at 95 km/h. By the time it reaches the plate it may have slowed 10%. neglecting gravity, estimate the average force of air resistance during a pitch. if the distance between the plate and the pitcher is about

    asked on October 13, 2015
  56. MATH

    Please help, solution set for 7(4z-3)>59 please.?

    asked on October 6, 2015
  57. Life orantation

    Description of recent service delivery protests

    asked on May 21, 2015
  58. programming

    Peter decided to save money to buy a house. Enter this amount as well as the amount he will be able to save each month. He earns 0.8% interest per month while the amount is less than R70,000 and 0,7% interest per month if the amount is equal to or more

    asked on March 29, 2015
  59. Math

    ceftriaxone (rocephin) is a dry powder antibiotic that must be reconstituted for use. the label states that to create a 100 mg/ml solution, 4.8 ml must be added to a 500mg vial. what is the powder volume. I am not sure what formula to use for this problem.

    asked on March 25, 2015
  60. Math

    Write an inequality for the following. A swimmer dove off a 25 ft. Platform. He submerged 14 feet below the water.

    asked on January 21, 2015
  61. Math

    Diagram of a triangle PQR when QR is 14.5

    asked on January 15, 2015
  62. Chemistry

    A sample of toluene, C7H8 has a mass of 74.5 g. How many carbon atoms does it contain? How many hydrogen atoms does it contain? My work: I get 3.41 x 10^24 for carbon atoms And 3.90 x 10^24 for hydrogen atoms. Is this correct?

    asked on November 24, 2014
  63. english

    Traditional african marriage is an advantage for men only,not women

    asked on July 29, 2014
  64. Finance

    An investor is thinking about buying some shares of a company at $ 75 a share. She expects the stock to rise to $ 115 a share over the next 3 years. During that time, she also expects to receive annual dividends at $ 4 a share. Assuming that the future

    asked on June 24, 2014
  65. psychology

    The researcher's question of correlation between the cost of beer and the number of calories it contains? The researcher's question of correlation between the cost of beer and the volume of alcohol it contains?

    asked on June 14, 2014
  66. Finance

    I am borrowing $ 10,000 for 5 years at 7% . Payments are made on a monthly basis and are determined using the add- on method. 1: How much total interest will I pay on the loan if I held it for the full 5 year term ? 2 : What would my monthly payments be

    asked on May 31, 2014
  67. language arts

    200 years from now what will my neighborhood look like?

    asked on May 19, 2014
  68. statistics

    Age at onset of dementia was determined for a sample of adults between the ages of 60 and 75. For 15 subjects, the results were ÓX = 1008, and Ó(X-M)2 = 140.4. Use this information to answer the following:

    asked on November 18, 2013
  69. College Algebra

    A couple wants to rent a car for one day while on vacation. Frank's Automotive Rental wants $29 a day and $0.17 per mile, while Coups-For--Day wants $21 a day and $0.19 per mile . After how many miles wo9uld the price from Coups exceed the price to rent

    asked on September 14, 2013
  70. business math

    you take out a loan for $20,000 simple interest loan at 4% on August 21 and in 45 days you pay off $8,000 of the loan. What is your new principal?

    asked on August 23, 2013
  71. Math

    can someone please help me with the answer to this question? What payment should be made on the invoice in the amount of $ 3,400.00 dated Aug 7 if the terms of sale are 3/15, 2/30,n/45 and the bill is paid Aug 19?

    asked on May 21, 2013
  72. Math

    I don't know the answer . That's why I'm looking for someone to help me answer my question which is : An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and the net date ?

    asked on May 21, 2013
  73. Math

    does anyone know how to find the answer to the following questions: An invoice is dated Aug 29 with terms of 4/15 E.O.M. What is the discount date and the net date ?

    asked on May 21, 2013
  74. Pre-Algebra

    Tempurature of substance increases by 10°C in 5 minutes. Write it as a unit rate. Then convert it to degrees Fahrenheit per hour.

    asked on May 6, 2013
  75. Math

    If the probability of an event happening is 2/5, then the probability of the event not happening is 3/5? This is False. The answer is 1/3. Explain why the answer is 1/3

    asked on April 25, 2013
  76. Math

    What is 1/2 X 48 X 20 feet

    asked on April 17, 2013
  77. physics

    A scooter with a mass of 25kg on a horizontal plane that is inclined until at an angle of 3degrees.what is the minimum coefficient of static friction for the scooter not to slide?

    asked on February 4, 2013
  78. algebra

    why can’t we simplify 3x2+4x any further. If you were to incorrectly simplify this expression into a single term, what would that single term look like? Now, pick 1 or 2 numbers to plug in for “x” in 3x2+4x and your incorrectly-simplified single term

    asked on December 18, 2012
  79. math

    Corey needs 24 boards that are 47 1/2 inches long. How many feet of boards should he buy explain.

    asked on December 10, 2012
  80. Math

    If the larger of two consecutive integers is subracted from twice the smaller integer, then the result is 21. Find the integers.

    asked on October 9, 2012
  81. composition156

    What aspect of writing an introduction do you anticipate may be a challenge for you? Why?

    asked on August 29, 2012
  82. algebra

    At local community college, it costs $150 to enroll in a morning section of an algebra course. Suppose that the variable n stands for the number of students who enroll. Then 150n stands for the total amount of money collected for this course. How much is

    asked on March 15, 2012
  83. physics

    it takes 14 seconds for a runner to go from 5m/s to 19m/s? how do you calucate acceleration

    asked on February 1, 2012
  84. calculus

    Find the derivative of the function. HINT [See Quick Examples on page 835.] f(x) = 9x ln x

    asked on October 31, 2011
  85. Linear equations

    Please help me solve this problem- Find an equation for the line perpendicular to 6x+2y=-2 having the same y-intercept as -4x-3y=6

    asked on October 8, 2011
  86. biology

    explain how organisims have evolved physiologically to become suited to its environment

    asked on September 13, 2011
  87. Algebra

    John rented a van for $250 for the week plus $.20 a mile. How far can John driveifhe only wants to spend a totalof $325? Write an inequality. Solve

    asked on July 19, 2011
  88. college math

    The atmospheric pressure P in pounds per square inch (psi) is given by the formula below, where a is the altitude above sea level (in miles). If a city has an atmospheric pressure of 13.25 psi, what is its altitude? (Recall that 1 mi = 5,280 ft. Round your

    asked on July 10, 2011
  89. bioethics

    what is law natural law eternal law human positive law what is conscience different kinds of conscience pls need an answer thanks

    asked on June 20, 2011
  90. chemistry

    identify and show the bond in the formation of the following; AsH3 BaO BCL3 SO2 ZnC2 CL2 K2S PH3 PLS I NEED AN ANSWER THANKS

    asked on June 19, 2011
  91. math

    a liscence plate for a car must consist of a letter followed by two numbers. Each letter mus be an R, U or N. Each number must be a 2 or 6. Repetition of digits is permitted. Use the counting principle to determine the number of points in the sample.

    asked on June 12, 2011
  92. college math

    cannot figure out the probability for the following: A pea plant i=must have exactly on of each of the following pairs of transis: Short(s) or tall(t); round(r) or wrinkled(w)seeds; yellow(y) or green(g)peas; and white(wh) or purple(p) flowers so A) How

    asked on June 10, 2011
  93. math

    if an angle has 40DEGREES and 80 dgrees what is the missing number?

    asked on April 3, 2011
  94. science

    determine the correct amount of sodium hydroxide needed to react with 1.0g iron (III) chloride.

    asked on March 23, 2011
  95. College Algebra

    Carl had packed 6 crates by 8 a.m. By 11 a.m., he had packed 24 crates. Find the average rate of change in crates packed from 8 a.m. to 11 a.m.

    asked on February 22, 2011
  96. algebra

    A roof rises 1.4 feet vertically and 11.8 feet horizontally. What is the grade of the roof? The grade of the roof is _____% how do I begin to find the answer to this

    asked on January 31, 2011
  97. cost accounting

    fixed cost relating to staging a concert are 350,000. variable cost per patron are $5.00. the selling price for a tickets $25.00. The blue Saints band has sold 23,000 tickets so far. How many ticket does the Blue Saints band need to sell to achieve net

    asked on December 10, 2010
  98. cost accounting

    market a new product for 2.00 a unit. fixed costs to manufacture this product are 100,000. the contribution margin is 40 percent. how many units must be sold to realize net income of 100,00 from this product?

    asked on December 10, 2010
  99. cost accounting

    it a medium-size manufacturer of bicycles. during the year a new line call "Radical" was made available to Frank customers. The break-even point for sales of Radical is 250,000 with a contrbution margin ratio of 40 percent. Assuming that the profit for the

    asked on December 10, 2010
  100. accounting

    O'Hara Inc. made sales of $310,000 during 2008, it's first year of operations. Of this, $15,000 remained in accounts receivable at the end of the year. Additionally, the company paid and incurred $270,000 in expenses during the year. The company also

    asked on November 14, 2010


  1. 1
  2. 2