Questions Asked on
August 18, 2011

  1. math

    write an expression to represent each total and then simplify it cost of 2 pens and 3 notebooks the note books costs 179 each nd the pens 289 each

    asked by adrian
  2. SCIENCE

    a. An engine has a reservoir of 8000 J and has a sink of 1000 J.i. Find the work generated by the engine.

    asked by KAIT
  3. Math

    All of my life I have gotten a C average in math. I have been trying to set a goal to make above a C in math. I don't know why I have trouble with math. Can someone help me?

    asked by Aquion
  4. physics

    A passenger train is traveling at 30 m/s when the engineer sees a freight train 357 m ahead of his train traveling in the same direction on the same track. The freight train is moving at a speed of 5.9 m/s. (a) If the reaction time of the engineer is 0.43

    asked by laura
  5. physics

    A motorcycle officer hidden at an intersection observes a car driven by an oblivious driver who ignores a stop sign and continues through the intersection at constant speed. The police officer takes off in pursuit 1.98 s after the car has passed the stop

    asked by laura
  6. chemistry

    1 g alloy of Cu and Zn reacted with excess of H2SO4 gives 60 ml of H2 at STP. What is the % of Zn in the alloy?

    asked by abhijit
  7. PHYSICS

    A Carnot type engine has a reservoir of 1000 K with an efficiency of 50%. Find the temperature of the sink.

    asked by KAIT
  8. marketing

    Budgeting Concepts Paper (10 points). Prepare a 1,050-1,750-word paper in which you compare and contrast two types of operating budgeting concepts. For example, activity-based costing, zero based, line item, management by objectives, performance based,

    asked by Anonymous
  9. finanace

    Budgeting Concepts Paper (10 points). Prepare a 1,050-1,750-word paper in which you compare and contrast two types of operating budgeting concepts. For example, activity-based costing, zero based, line item, management by objectives, performance based,

    asked by Anonymous
  10. earth

    Why is the Earth's atmosphere rich in oxygen and poor in carbon dioxide?

    asked by NAncy
  11. PHYSICS

    a.A person with skin area of 3 m2 is nude in a room of still air at 22 C. i.Calculate the rate of conduction of heat loss in watts if the skin temperature is 28 C at a distance of 5 cm.

    asked by KAIT
  12. SCIENCE

    a.A person with skin area of 3 m2 is nude in a room of still air at 22 C. i.Calculate the rate of conduction of heat loss in watts if the skin temperature is 28 C at a distance of 5 cm.

    asked by KAIT
  13. mathmodeling

    Person A opens an IRA at age 25, contributes $2000 per year for 10 years, but makes no additional contributions thereafter. Person B waits until age 35 to open an IRA and contributes $2000 per years for 30 years. There is no initial investment in either

    asked by fazilah
  14. science

    Prepare a comprehensive directory (i.e. scrap book made of newspaper) of related resources with current news, information on forests, forest biodiversity including the people, plants and wildlife that call them home and why it is important to preserve

    asked by stefeena
  15. MATHS

    two circles c1 and c2 meet at the points A and B. CD is a common tangent to these circles where C and D lie on the circumference of C1 and C2 respectively. CA is the tangent to c2 at A. When produced DB meets the circumference of C1 at p. Prove that PC is

    asked by JJ
  16. english..... please help me

    is anyone can help to correct my english..thank you....please correct if it relevant to the question of my exination..thanks and GOD BLESS U. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of

    asked by jessie
  17. english..... please help me again.

    please help me on my exam. to make good answer enough.please correct my english and answer if it is relevant to the question. thanks alot. please help me if you can give or add more on my answers. question 2.“Spoken language was the first form of

    asked by jessie
  18. To Jessie - re English

    Read and follow the directions I have already posted for you. Those are your first steps. http://www.jiskha.com/display.cgi?id=1313664789 No one can help you until you do those things, and continuing to repost the same things will not change anything.

    asked by Writeacher
  19. B.V.B

    A 10G bullet is short from a 5kg gun with a velocity of 400m/s.What is the speed of recoil of the gun?

    asked by sachin
  20. physics

    A car travels directly northwards at 10m/s.it then accelarates at 2m/s^2 over a distance of 200m.calculate the car's velocity after 200m.

    asked by Welheminah
  21. health

    total number of beats in 24 hours if the rate is 42 beats in 30 sec.

    asked by shayla
  22. Titration Experiment

    Why is unnecessary to measure precisely 25 ml of unknown acid into the beaker?

    asked by Veronica
  23. MATH

    What happens to the mean, median and mode for the data shown if the outlier is eliminated? 38 33 38 32 33 6b 30

    asked by chachis
  24. analytical practical III

    what happen when sodium hydroxide react with 5% cider vinigar

    asked by 207236330
  25. math

    sander needs to find 73%of $239. what is a good estimate of the answer

    asked by howard
  26. Business Excel

    I need help with BIS 155 Data Analysis with spreadsheets final exam. Total of 5 essay questions. Must write a total of 250 words per questions. This class is a excel class.

    asked by Jacqueline
  27. HUM186

    1. What are the social responsibilities of news media?

    asked by Anonymous
  28. Math

    1. Make a scatterplot of the data in the viewing rectanlge[19030,2010,10]by[0,6,1]. 2. Find the quadratic function given by f(x)=a(x-h)2+k that models the data. 3. Estimate the minimum wage in 1976 and compare it to the actual value of $2.30. 4.Estimate

    asked by Porsha
  29. algebra

    A 49 foot pipe is cut into two pieces. If one piece has a length of y feet, what is the length, in feet, of the other piece?

    asked by danielle
  30. physics

    a body travels half of its total path in the last second of its free fall from rest.what is the duration of fall . you have answered the question before but the answer my mam gave is 3.4sec but you have solved it to 1.4sec .plz solve it for me

    asked by pavatharani
  31. anatomy and physiology

    select the correct sequence of nerves and nervous structure that would allow you to feel someone tickling the back of your leg?

    asked by Anonymous
  32. Calc AB

    (1/(x+h))-(1/x) ..simplify

    asked by star
  33. chemistry

    Which best describes the physical change of an aluminum soda can after its crushed? A change in the mass of can B change in weight of can C change of volume of can D change in the specific heat of can

    asked by Chriese
  34. Calc AB

    (x+y)^3 expand

    asked by star
  35. English

    What word can I use to replace "fall victim to." Give me some examples please. I'm stumped.

    asked by Sally
  36. math

    100 Duration (d) in minutes what is the cost (c) in rands

    asked by Anonymous
  37. Math

    Can you check these questions for me? 1. Add: (3x^4-x+2)+(9x^5-x^2+x) 9x^5+3x^4-x^2+2 2. Add: (4x^3-2x^2+x+4)+(9-x^5-x^2+4x) -x^5+4x^3-3x^2+13 3. Subtract:(4x^4+3x+x^2)-(x^2-6+3x^3) 4x^4-3x^3+3x+6 4. Subtract: (5x-6)-(3x^3-2x^2) -3x^3+2x^2+5x-6 5.

    asked by Chandler
  38. psychology

    Sometimes when going to meet Jamie, Karen mistakes someone else for him. Her motivation and her expectation of seeing him affect her perceptions. Describe one study illustrating either of these factors and its effect on perception.

    asked by mary
  39. math

    a 4 digit number my 2 nd digitis twice my 3 digit the sum of all my digits is 3 times greater than my last digit the productof my 3rd and 4th digits is 12 times greater than the ratio of my 2nd to 3rd whats my number?

    asked by richard
  40. Life orientation

    In 10-15 lines critically discuss 5 ways in which HIV AND AIDS problem impacts on the community.provide relevent sources to support your claim.

    asked by Florance
  41. algebra

    How do i work out this problem: f-7.8=

    asked by salina
  42. Calc AB

    eliminate the parameter and write a rectangular equation for x=(t^2)+3 y=2t

    asked by girl
  43. Physics

    Three charges q1, q2 and q3 lie along the x-axis. Charge q1=2.5 micro coulomb is at x= 1.5 m, while charge q2= 6.3 micro coulomb is at the origin. Where must the third charge q3 be placed on the axis so that the resultant force on it is zero?

    asked by Hilary
  44. Life orientation

    What are the consequences of alcohol

    asked by Ndumie
  45. Algebra

    2. The Sugar Sweet Company is going to transport its sugar to market. It will cost $4200 to rent trucks, and it will cost an additional $150 for each ton of sugar transported. Let C represent the total cost (in dollars), and Let S represent the amount of

    asked by Daniel
  46. Math

    HELP! can you check and help me with some of these? 1. y + 8 = -15 My answer: -7 2.3x = 27 My answer: 9 3. 5 + a = -19 My answer:-24 4. x + 1/3 = 5/6 My answer: NEED HELP WITH THIS ONE 5. -54 = -6y My answer: 9 6. a/3 = -11 My answer: -33 7.19.5 = -39.5 +

    asked by Bryce
  47. algebra

    what is 4.14 times 10 to the 2nd power ?

    asked by Caliyah
  48. stats

    what does it mean to say alpha is set at 0.5

    asked by nicole
  49. Science

    How do you draw an atom?

    asked by Bryce
  50. Algebra

    I need this answer in Scientific Notation please help 7.74x10^-4

    asked by Cj
  51. math

    1,8,27 what are the next 3 numbers? What is the pattern?

    asked by steve
  52. Social Studies

    One of the most hotly debated topics of national concern is gun control. In a complete essay, compose a proposal to either ban all hand guns or to allow free ownership of all hand guns and trace the history of this proposal. You must show the process it

    asked by Tatianna
  53. Comp 155

    identify the three key parts of a paragraph.

    asked by Camille
  54. health safety & nutrition

    measurements of height and weight provide useful information about: a.intellegience b.overall health status c.adult shape d.development age

    asked by sue
  55. Calculus

    I'm having difficulty figuring #2 of this prob;em. I'm utterly clueless. Can someone explain it? Please and thank you. y=x 2. List the roots of the function.

    asked by Elee
  56. 3rd grade math

    how do you write a 4 didget number in expandable form ?

    asked by brianna
  57. Math

    Two small conducting spheres are identical except that sphere x has a charge of -10 micro coulombs and sphere y has a charge of + 6 micro coulombs . After the spheres are brought in contact and then separated,what is the charge on each sphere ,in micro

    asked by Troy
  58. Math

    What does KAPS mean in Math?

    asked by Charlie
  59. MATH PLEASE HELP!!!!!

    There are 36 buttons in a jar. There are 3 times as many red buttons as white. 1. how many white buttons are there? 2. how many red buttons are there? My answer is 6,am i right?

    asked by LIDIA
  60. Math

    Does 5/8 + 5/6 = 1 11/24

    asked by Jessie
  61. marketing

    which of the following are components of a proposed marketing plan? a.target market, costs, expected sales results b. website design, costs, expected sales results c. target market, costs, wbsite design d. website design, target market, expected sales

    asked by Anonymous
  62. marketing

    the fact that many americans want the convenience of driving gas-guzzling trucks and sport utility vehicles that contribute disproportionately to pollution and global warming is an example of: A. the micro-macro dilemma B. discrepancies in customer value

    asked by Anonymous
  63. MATH HELP

    There are 20 red and blue pens in abox. There are 3times as many blue pens as red pens? How many red pens are there? How many blue pens are there?

    asked by MIKI
  64. Math

    Does 5/8 + 5/6 = 1 11/24

    asked by Jessie
  65. science

    i grew in a cave but i am not alive.What am i

    asked by Gabby cornieliues
  66. psychology

    HYPOTHETICAL EXPERIMENT: You, as an eager young behavioral scientist, have noted that many people don't wash their hands when they are in a public rest room, unless there is someone there who they believe is watching them. Because you are very aware of the

    asked by Jkim
  67. math

    The base of a parallelogram is 6 times its height if the base is cut in half,the new area is what percentage of the original area?

    asked by kyra
  68. 6th grade math

    2 2/3 \ 1 5/6

    asked by Aaron
  69. Free Enterprise

    Is the definition of thinking at the margin basically saying if you don't have any specific numbers or the use of the one additional unit in the situation at hand, then it wouldn't be thinking at the margin?

    asked by CPut
  70. math

    The base of a parallelogram is 6 times its height if the base is cut in half,the new area is what percentage of the original area?

    asked by kyra
  71. marketing

    a manufacture of drinks, wants to add packaged fruit juices to its existing product line. the manufacturer needs to make some decisions regarding packaging and branding of the fruit juices. these decisions would fall under which variable of the marketing

    asked by Anonymous
  72. Math

    Simplify -17/21.

    asked by Madison
  73. Math Calc

    Find the tangent line to the curve (y-x)^2= 2y+4 at the point (2,6)

    asked by Lalee
  74. math

    Evaluate write in simplest form Y - for y = -6 and z = -20 z

    asked by brittany
  75. Math

    simplify 13/17

    asked by Madison
  76. Math

    simplify 64/76

    asked by Madison
  77. Math

    The temperature at 3:00 am was -17 f by noon the temperture was -17.8 f at what time was it the coldest?

    asked by brittany
  78. science

    What tools and safety standards do scientists use in scientific investigations

    asked by Anonymous
  79. Math

    simplify 14/22

    asked by Madison
  80. Math

    Samual is 5 in , taller than Jackie - 8 shelly is 0.7 in taller than Jackie whos taller?

    asked by brittany
  81. Physics

    Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is

    asked by Gullu
  82. Physics

    Two cars travel at the same speed, so that they move 105 km in one hour. One car, a sleek sports car, has a motor that delivers only 35 kW of power at this speed. The other car needs its motor to produce 65 kW to move the car this fast. The difference is

    asked by Gullu
  83. PHYSICS

    A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C .Calculate the heat loss rate in watts

    asked by KAIT
  84. PHYSICS

    A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C .Calculate the heat loss rate in watts

    asked by KAIT
  85. Pre-Algebra

    5 and 17/20 - 3 and 1/4

    asked by Hannah
  86. physics

    the plumbing in an old house uses lead pipes (which are now considered hazardous). Hot water is run through a section of pipe, increasing its temperature from 19.4 C to 36.8 C. if the pepe is intially 3.90m in length, what is the change in the length of

    asked by Anonymous
  87. history

    Where do archaeologists believe early Americans came from?

    asked by brittany
  88. physics

    A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.

    asked by KAIT
  89. english..pls. ms. sue help me

    please help me on my exam. to make good answer enough.please correct my english and answer if it is relevant to the question. thanks alot. please help me if you can give or add more on my answers. question 2.“Spoken language was the first form of

    asked by jessie
  90. physics

    a. A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C Calculate the heat loss rate in watts

    asked by KAIT
  91. physics

    a. A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C Calculate the heat loss rate in watts

    asked by KAIT
  92. please help me ms. sue

    is anyone can help to correct my english..thank you....please correct if it relevant to the question of my exination..thanks and GOD BLESS U. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of

    asked by jessie
  93. physics

    A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.

    asked by KAIT
  94. physics

    A person with skin area 2 m2 and 0.97 radiation efficiency is at rest and has a skin temperature of 28 C in an environment with a uniform temperature of 22 C. Calculate the heat loss rate if the skin temperature is raised by 8 C by vigorous exercise.

    asked by KAIT
  95. PHYSICS

    a. A 25 nC particle and a – 7 nC particle is interacting with each other at a certain distance. Find the force between the two charges @ 3.0 cm and 1.0 cm Calculate and draw each of the particle’s electric fields. Calculate the electric potential

    asked by KAIT
  96. history

    what animal was a source of food for early hunters yet is not in existence today?

    asked by brittany
  97. physics

    The graphs below show position as a function of time for three different objects. Describe the similarities and differences of these motions. Explain your answer.

    asked by Gullu
  98. Pre-Algebra

    5 and 17/20 - 3 and 1/4

    asked by Hannah
  99. French

    Can someone tell me the french numbers 1-10 in order?

    asked by Bryce
  100. physical science

    what is the freezing point depression when 153g of bromide is added to 1000g of benzene?

    asked by melanie
  101. physical science

    what is the freezing point depression when 153g of bromine is added to 1000g of benzene?

    asked by melanie
  102. math

    This number has 4 places to the right of the decimal point. It has 2 hundreds, 3 ten thousandths, and 1 tenth. It is between 240 and 242. The thousandths place is one less than the ten thousandths and less than the hundredths. What are the six numbers that

    asked by lisa
  103. math

    at a local restaurant 45% of the customers order spaghetti. Estimate the probability that 6 of the next 10 customers will order spaghetti.

    asked by Tammy
  104. biology

    Describe the concept of natural selection. Give some examples.

    asked by Anonymous
  105. Math

    Could I please have some help with this Calcuate the following and simplify where possible 3/7 divided by 2/3 1/4 divided by 5/6 1/3 divided by 5/12

    asked by Anonymous
  106. math

    Omar has the Talk-A-Lot plan. In September, his bill was $168.00. write an expression and show work

    asked by cha
  107. Math

    Can someone please help me with the following Complete the following calculations, making sure you follow the BEDMAS rule for order of operations (^36-1)2

    asked by Anonymous
  108. trig

    how do you find all the values of theta from 0 degrees through 360 degrees for which sin theta equals 0

    asked by jen
  109. ms. sue pls. help me urgent

    pls help me if my english is correct in grammar or relevant to the question thank you. question..1.What is meant by “if we are to improve our speaking skills, we must first become more aware of ourselves, our motivation, behavior patterns, and likely our

    asked by jessie
  110. English

    What does it mean " to get along you have to play along"?

    asked by Nina
  111. ms.pls help me urgent and thanks a lot to you

    ms sue thank you so much. and please help me again for this answer so that i can submit to my teacher in english. . “Spoken language was the first form of communication between human beings, it came along with the written language, and writing is the

    asked by jessie
  112. chemistry

    How do I draw Lewis Structure for BN and CN-

    asked by San
  113. Geometry please help me need to finish!

    The slant height of a regular pentagonal pyramid is 6 cm, and the length of each side of the base is 3 cm. Find the lateral area.

    asked by Nina
  114. Science

    Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

    asked by Thomas
  115. Math

    The table shows the driving distance from certain cities. From To Driving Dis(mi) Pittsburgh Johnstown 55 Johnstown Allentown 184 1. Write a number sentence that compares the mileage from Pittsburgh to Johnstown to Allentown, and the mileage from Allentown

    asked by Hayley
  116. Math

    Solve the following equation for t : 3/t + 2/m = 2

    asked by Jenna
  117. Precalc

    How would I put this parabola in standard form: x^2-6x+8y-31 Here how I started it: x^2-6x+9=-8y+31 Im not sure what to do from here :(

    asked by Cinderella
  118. algebra

    k^2+10k+16/k^2+13k+40 * k^2+5k/k^2-2k-8

    asked by Lois
  119. algerba 1 math

    how do i solve the equation: -2(-8-4)^2+-8-4/4 please show step by stap HELP PLEASE

    asked by cindey
  120. physics

    A sports car moving at constant speed travels 120 m in 5.1 s. If it then brakes and comes to a stop in 4.0 s, what is its acceleration? Express the answer in terms of g's, where g = 9.80 m/s2. (Take the positive direction to be the direction of travel.)

    asked by Hal
  121. CHEM 102

    Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou

    asked by Anonymous
  122. CHEM 102

    Can someone help me with this question please? What is the pH at each of the points in the titration of 25.00 mL of 0.1000 MHCl by 0.1000 M NaOH:i) After adding 25.00 mL NaOH ii) After adding 26.00 mL NaOH thankyou

    asked by paige
  123. chem

    If 1.0 L of 0.2 M Ca(OH)2 is added to 2.5 L of 0.1 M HCl, the pH of the final solution is? can someone show me the working out of this question? im very confused by it. thankyou

    asked by an