vince

Most popular questions and responses by vince
  1. Math

    At Harry's Discount Hardware everything is sold for 20% less than the price marked. If Harry buys tool kits for $80, what price should he mark them if he wants to make a 20% profit on his cost?

    asked on July 4, 2010
  2. Chemistry

    1) A quantity of 85 mL of .900 M HCl is mixed with 85 mL of .900 M KOH in a constant-pressure calorimeter that has a heat capacity of 325 J/C. If the initial temperatures of both solutions are the same at 18.24 degrees C, what is the final temperature of

    asked on November 18, 2014
  3. Math

    The scale of map is 1:20000. Find the area on the map which represents 124km^2

    asked on June 3, 2010
  4. Chemistry

    0.000333 g fluorescein (332.32 g/mol) is dissolved in 225 mL solution of ethanol. The density of ethanol is 0.785 g/mL. What is the concentration of the solution in molarity (M)? How many ppm? I already know that the molarity is 4.45E-6. I just need help

    asked on July 16, 2012
  5. Chem

    40. If 12.0 gram of O2 is required to inflate a balloon to a certain size at 27 degrees C, what mass of O2 is required to inflate it to the same size and pressure at 81 deg C?

    asked on March 14, 2013
  6. chemistry

    What temperature is required to produce a carbon dioxide partial pressure of 1.0 ? BaCO3¡êBaO + CO2

    asked on March 19, 2011
  7. Math/Solve

    ABC phone company charges $17 per month plus $0.03 per minute of phone calls. XYZ phone company charges $8 per month plus $0.06 per minute of phone calls. How many minutes of phone calls in a month make XYZ phone company a better deal?

    asked on February 26, 2015
  8. Chemistry

    How many moles are contained in 1.20 x 1024 molecules CO2?

    asked on October 2, 2013
  9. MATH

    What is the standard deviation of the following data? If necessary, round your answer to two decimal places. 46, 53, 38, 67, 46, 57, 61, 42, 63, 55, 46

    asked on June 7, 2011
  10. MATH

    A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a yellow marble, do not replace it, and pick another yellow marble?

    asked on June 7, 2011
  11. Math

    A bag holds 2 yellow, 1 green, and 2 red marbles. If you were to draw a marble from the bag 150 times, and replace it after each draw, how many yellow marbles would you expect to draw? (1 point) A:50 B:60 C:30 D:38 I say it's B or A

    asked on April 4, 2013
  12. Physics

    A 39.0 kg box initially at rest is pushed 4.50 m along a rough, horizontal floor with a constant applied horizontal force of 135 N. If the coefficient of friction between box and floor is 0.300, find the following. (a) the work done by the applied force J

    asked on April 28, 2013
  13. College Algebra

    Carbon-14 Dating. Only 10% of the carbon-14 in a samll wooden bowl remains. How old is the bowl? Half life of carbon is 5700 years.

    asked on December 8, 2010
  14. Physics

    A water slide is constructed so that swimmers, starting from rest at the top of the slide, leave the end of the slide traveling horizontally. One person hits the water 5.00 m from the end of the slide in a time of 1.000 s after leaving the slide. Ignoring

    asked on October 26, 2009
  15. physics

    four forces 8N,6n,2n and 4n act on a point O in the directions north,east,south and west respectively,find the magnitude of their result and the direction of their resultant force.

    asked on February 25, 2016
  16. math word problem

    "Adult tickets are $6, Kids are $3. If the total sales are $585, but only 120 tickets were sold, how many adult tickets were sold? If this was 130 it would be easy: $3+$6 =$9; $585/$9 = 65 tickets. The problem is the question specifies 120 tickets.

    asked on March 25, 2013
  17. gen Chem

    I've attempted this problem but not sure if i'm on the right track. Use the enthalpy diagram provided above and apply Hess’s Law to determine the standard enthalpy of formation for C12O36H20N12 (s) using the results from part (a) and the following

    asked on October 26, 2010
  18. Chemistry

    How much 2 M KOH must be added to 0.5 L of 0.2 M glycine at pH 8 to bring its pH exactly to 10?

    asked on February 8, 2013
  19. MATH

    A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a blue marble, replacing it, and then picking a black marble?

    asked on June 7, 2011
  20. MATH

    Triangle DEF is similar to triangle PQR. Side DE measures 3, side EF measures 7 and side FD measures 9. Side PQ measures 5x – 25 and side QR measures 6x + 4. Find the value of x.

    asked on June 7, 2011
  21. math

    need help with math word problems. just don't understand. What is the number? you have a four digit number where the thousands digit is four greater than the hundreds digit.The tens digit is twice the thousands digit. The ones digit is half of the

    asked on March 8, 2007
  22. Chemistry/Elements

    What is needed to have Nitrogen and Lithium react?

    asked on March 17, 2011
  23. math

    For small values of h, the function (16+h)^1/4 is best approximately by which of the following? a. 4+h/32 b. 2+h/32 c. h/32 d. 4-h/32 e. 2-h/32

    asked on December 31, 2011
  24. Math

    A mother is 21 years older than her new born daughter. How old will the daughter be when her age is 1/4 of her mother's?

    asked on May 27, 2010
  25. algebra 2

    Boat builders share an old rule of thumb for sailboats. The maximum speed 𝐾 in knots is 1.35 times the square root of the length 𝐿 in feet of the boat’s waterline. If a customer is planning on ordering a sailboat with a maximum speed of 8 knots how

    asked on May 1, 2015
  26. MATH

    What is the equation of the parabola with a directrix at y = 4 and focus (0, -4).

    asked on June 7, 2011
  27. Math

    Mary's age is 2/3 that of peter's. Two years ago Mary's age was 1/2 of what Peter's age will be in 5 year's time. How old is peter now?

    asked on May 31, 2010
  28. Chemistry

    Q: How is boiling different from sublimation?

    asked on May 19, 2010
  29. 6th grade math

    I still do not understand this problem? find a number such that when added to the numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks If you add 7 to the numerator and 7 to the denominator you get 9/18. 9/18= 9x1/9x2 = 1/2 It

    asked on March 8, 2007
  30. Geometry

    A 40lb child is sitting at A(2,3) and a 30lb child is at B(12,7) where units are feet. Find the point P between A and B which could be used as the fulcrum of a teeterboard putting the two children in equilibrium(Hint:40AP=30PB)

    asked on July 31, 2016
  31. math

    a total of $5000 is invested at 2%, 3%, and 4%. the amount invested at 4% is equal to 2% and 3% combined together. the total interest gained for 1 year is $145. find the amount invested at each rate.

    asked on February 10, 2015
  32. algeb collage

    solve the inequality,express using interval notation x3-5x2-14x>0

    asked on September 26, 2007
  33. Math

    On an automobile assembly line, every third car is green. Every fourth car is a convertible. a) How many cars are out of the first 100 will be convertibles? b) Which number of car is First Green convertibles? Grade 7 Math Please answer, ASAP.

    asked on September 8, 2016
  34. math/ratio tables

    A girl runs 50 miles in 60 minutes. At this rate,how long would it take her to run 15 miles?

    asked on August 31, 2015
  35. Math

    I need help. So supposed that you have three diffrent lenghts of linking cubes as shown below . ( 5 blacks, 3 whites 2, reds) Assume that you have as many of these lengths as you need, but you may not take them apart. a) 25 d) 29 b) 20 e) 30 c) 18 f) 32

    asked on September 7, 2016
  36. EASY GRAPHING QUESTION

    Write the equation of a circle with a center at (2.5, –3.5) and a radius of 1.2.

    asked on June 7, 2011
  37. math

    it is cross math (like sudouk) six rows across and six rows down 1st row has empty box, +, empty box, + box =6 this row is across 2nd row has x blacked out box, +, blacked out box, x, blacked out box this row is across 3rd row across is empty box, +, empty

    asked on March 12, 2007
  38. Geometry

    Find the equation of the circle which is concentric with the circle x^2+y^2+3y-8y+16=0 and tangent to the line 4x+3y-12=0. Show your solution.

    asked on August 31, 2016
  39. finance

    Thompson stores is considering a project that has the following cash flow data. What is the project's IRR. Note that a project's projected IRR can be less than the WACC and even negative, in which case it wll be rejected. Year 0 ($1,000), year 1 $300, year

    asked on February 6, 2010
  40. Calc

    Air is being pumped into a spherical balloon so that its volume increases at a rate of 90{cm}^3/s. How fast is the surface area of the balloon increasing when its radius is 7{cm}? Recall that a ball of radius r has volume \displaystyle V={4}/{3}pie r^3 and

    asked on March 15, 2009
  41. matn

    need help with word problem? half add it Find a number such that when added to numerator and denominator of 2/11 yields a fraction equivalent to 1/2? thanks for any help (x+2)/(x+11) = 1/2 x is the number you want. Now do the algebra. I will be happy to

    asked on March 8, 2007
  42. physics

    A boy throws a ball at 5.5 m/s at an angle of 25.4° above the horizontal off a cliff which is 70.8 m high. What angle does the velocity of the ball make with the horizontal 0.78 s after the throw? (make the angle positive if the angle is above the

    asked on December 6, 2012
  43. EASY GRAPHING QUESTION

    Write the equation of a circle with a center at (15, –35) and a diameter of 100.

    asked on June 7, 2011
  44. THIS IS AN EASY QUESTION!!!

    (too bad I don't know how to solve it!) How many different ways can the letters in the word “square” be arranged?

    asked on June 7, 2011
  45. health

    In terms of decsion making sequences, how would you explain and describe : A. The 25-year-old, healthy worker who sees that sam physician for minor medial needs?

    asked on April 5, 2010
  46. pre-cal

    tan((theta/2)+(pi/6))=-1

    asked on July 2, 2011
  47. Math

    A square of area 2 is inscribed in a circle. What is the area of the circle?

    asked on July 7, 2010
  48. Computer Science

    What do you understand by life cycle of software development? Explain briefly the various stages of software development life-cycle.

    asked on May 25, 2010
  49. Computer Science

    What do you understand by life cycle of software development? Explain briefly the various stages of software development life-cycle.

    asked on May 25, 2010
  50. Math

    how would i express the following fraction with a single denominator e-4/5 +1

    asked on May 22, 2010
  51. math

    x^3-6x^2>0 answer in interval notation

    asked on September 26, 2007
  52. math

    sketch the graph of the linear function passing through (-6,5) and (-6,3)

    asked on August 3, 2014
  53. EASY MATH

    Write the equation of a hyperbola with a center at (-5, -3), vertices at (-5, -5) and (-5, -1) and co-vertices at (-11, -3) and (1, -3).

    asked on June 7, 2011
  54. MATH

    A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a yellow marble, do not replace it, and pick a red marble?

    asked on June 7, 2011
  55. Math

    A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a yellow marble, do not replace it, and pick a red marble?

    asked on June 7, 2011
  56. science

    how do bacterial plasmids relate to resistance and how do they relate to genetic engineering. i am very stuck and i need help please

    asked on October 17, 2010
  57. Computer Science

    What is a database management system? What are it's advantages over conventional file processing system?

    asked on June 1, 2010
  58. Physics

    Why does a rubbed balloon stick to the wall?

    asked on May 27, 2010
  59. Math

    How would I make z the subject of the formulae: x=y(z-y)/z

    asked on May 27, 2010
  60. Computer Science

    What do you understand by life cycle of software development? Explain briefly the various stages of software development life-cycle.

    asked on May 25, 2010
  61. IGCSE

    Is it possible to take igcse examinations in America?

    asked on May 16, 2010
  62. Math!

    A rectangle is 15cm x 12cm. If the length is reduced by R cm and its width is increased by R cm. Its area is reduced by 4cm^2.

    asked on August 23, 2008
  63. Precalculus

    please write an equation in standard x^2-y^2-2x+4y-7=0 * standard form *center *vertices *foci *asymptotes Thank-you you

    asked on December 3, 2014
  64. Math

    Function rule for x=1,2,3,4 & y=7,7,9,11

    asked on April 26, 2012
  65. EASY MATH QUESTION

    What is the probability of rolling a 1, 2, 4, 5, or 6 on a six sided dice? MAKE SURE TO READ THE QUESTION CAREFULLY!

    asked on June 7, 2011
  66. Math

    The scale of map is 1:20000. Find the area on the map which represents 124km^2

    asked on June 2, 2010
  67. Math

    How do I solve this equation 3d-81d^2=0

    asked on May 19, 2010
  68. Math

    How do I solve this simultaneous equation 3x-2y=5 (1) 2y-5x=9 (2) I managed to find the value of x and that is -7 but I am having problems to substitute it's value in equation (1)

    asked on May 16, 2010
  69. Calc II

    1) Find the point on the graph of y=x^2 where the cube has slope 5/2 2) Find the point on the graph of y=x^2 where the tangent line is parallel to the line -4x+3y=3

    asked on January 29, 2015
  70. science

    for every cubic meter of 30 degrees celsius saturated coded to 16 degrees celsius fowmany grams lost

    asked on January 27, 2015
  71. psychology

    Can the expression on your face produce the emotion which you would like to experience? Explain. ------ I believe that expression on ourface produce the emotion which we would like to experence. right? even though we are sad inside we tend to be happy. and

    asked on April 29, 2012
  72. MATH

    Write the equation of a parabola with a vertex at (-5, 2) and a directrix y = -1.

    asked on June 7, 2011
  73. 11th grade

    how do bacterial plasmids relate to resistance and how do they relate to genetic engineering. i am very syuck and i need help please

    asked on October 17, 2010
  74. Math

    How do I solve this equation 7x^3+21x^2=0

    asked on May 19, 2010
  75. Chemistry

    Q: How is melting different from evaporation?

    asked on May 19, 2010
  76. History

    Where can i find info on china and japan during 18th to 19th century.

    asked on May 10, 2010
  77. math

    x^3-6x^2>0 anser in interval notation

    asked on September 26, 2007
  78. math

    x^3-6x^2>0 anser in interval notation

    asked on September 26, 2007
  79. math

    write the following as a rate in lowest terms $402 for 18 rolls of film To find the rate for one roll of film, divide $402 by 18.

    asked on August 21, 2007
  80. MAth

    The wilkinson family drove 1.374 miles in 9 days.how many miles did they drive on last day

    asked on July 3, 2016
  81. History

    What limits on national powers can be derived from the tenth amendment?

    asked on February 19, 2013
  82. science

    What is blood made of?

    asked on June 14, 2010
  83. business

    What are the benefits associated with quality awards!? please could someone help me! cheers!

    asked on January 28, 2008
  84. Math

    How do I solve this equation 4n^2-25=0

    asked on April 30, 2010
  85. English

    I have to write a paper on the Pseudo-Modern movement and how it relates to movie, music, artwork, an article, and a 21st century. I can't find an example for each of these cases.

    asked on May 17, 2009
  86. science

    how much water does the usa use yearly

    asked on October 1, 2007
  1. Physics

    69

    posted on November 19, 2018
  2. Dudas

    Hi guys ULOL

    posted on November 19, 2018
  3. Dudas

    Tanga ako

    posted on November 19, 2018
  4. American government

    Collective

    posted on December 16, 2017
  5. Chemistry

    P=(3.0/6.0) x (250/350) 1.5 .53

    posted on February 12, 2017
  6. Math

    Thanks Ms.Sue

    posted on September 8, 2016
  7. Math

    pls answer as soon as posible.

    posted on September 7, 2016
  8. calc

    just believe in god

    posted on August 31, 2016
  9. ALgebra

    80

    posted on May 14, 2016
  10. chemistry

    Anna's answer is wrong. 241 L is the correct answer.

    posted on October 20, 2015
  11. algebra 2

    Thanks for not answer my question though :) really appreciate it

    posted on May 5, 2015
  12. algebra 2

    I am only Bill and Vince not the other ones

    posted on May 1, 2015
  13. Math/Solve

    i was able to figure it out 0.06m +8

    posted on February 26, 2015
  14. math

    no sir im pretty sure i typed it correctly from what my professor gave me. i also got -500 but it seems wrong so i went here. thank you so much for taking time and answering my question :)

    posted on February 10, 2015