Questions Asked on
July 4, 2010

  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?

  2. chemistry

    Predict whether the following solutions are acidic, basic, or nearly neutral: a. NaBr, b. K2SO3, c. NH4NO2, d. Cr(NO3). the answer is neutral, basic, acidic, acidic and i am not sure why

  3. chemistry

    how do you solve this problem?? What is the original molarity of a solution of formic acid (HCOOH) whose pH is 3.26 at equilibrium? the answer is 2.3 x 10^-3M.

  4. calculus

    A piece of land is shaped like a right triangle. Two people start at the right angle at the same time, and walk at the same speed along different legs of the triangle while spraying the land. If the area covered is changing at 4m^2/s how fast are the

  5. calculus

    Calculate dy/dt using the given information. xy + x = 12; dx/dt = -3, x = 2, y = 5?

  6. calculus

    A company knows that unit cost C and unit revenue R from the production and sale of x units are related by R^2/236000+5507 . Find the rate of change of revenue per unit when the cost per unit is changing by and the revenue is

  7. calculus

    A heart attack victim is given a blood vessel dilator to increase the radii of the blood vessels. After receiving the dilator, the radii of the affected blood vessels increase at about 1% per minute. According to Poiseulle's law, the volume of blood

  8. math

    find the slope of the line 5x - 2y = -1 I know the standard form is y=mx+b. It has been a while since I have done these.

  9. physics

    In thrill machine rides at amusement parks there can be an acceleration of 3g or more.But without head rests acceleration like this would not be safe. think why not?

  10. physics

    A perfectly insulated cup is filled with water initially at 20C. Heat energy is transferred to the cup by an immersion heater at a steady rate. Sketch on the axes that follow the temp as a function of time. Explain the shape of your graph and write down a

  11. Biology (Please Dont Skip Over)

    h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 7 9 5 7 9

  12. Biology

    Iwas woudnering if you could help me with this problem. The answer key says that the answer is D and I have no idea why. The chart, included in the link, reads off a value of about .5 for the G locus for the year 1980 Finding the percent heterozygous

  13. math

    Can anyone show me how to worj this I am lost Perform the subtraction :7/9-(15/8) thank you in advance

  14. English Vocab.

    Which of these expresses the meaning of fray as fight? A. John jumped into the fray, fists up and ready for action B. All the battleships joined in the fray with guns ablaze. C. She frayed the edge of the cord, hoping it wouldn't catch on fire D. Her dress

  15. algebra 2

    Solve for x: (3x+5)/((x-1)(x^4+7))

  16. Math (Algebra)

    Again please NO answers! Only on how to solve. One canned juice drink is 20% orange juice; another is 5% orange juice. How many liters of each should be mixed together in order to get 15L that is 14% orange juice?

  17. economics

    You work as the manager of the second largest bank in your region of the United States. The bank's top management team has asked you to present an overview of how the current economy and financial changes have impacted your business and what changes must

  18. MATH

    Find the equation of the line containing the given pair of points (1/6, -1/3)(5/6, 5). I need to know how to work this can you help.

  19. calculus

    Calculate dy/dt using the given information. (x+y)/(x-y)= x^2 + y^2; dx/dt = 12, x = 1, y = 0

  20. math

    rewrite as logarithmic equation 3^-3 = 1/27 would it be log -3 27 = 3?

  21. science

    is it right if i say that people don't even know that they have diabetes at the early stage of disease

  22. math

    Josh's gas tank is 1/5 full. After buying 7 gallons it is 7/10 full. How many gallons can his gas tank hold?

  23. math

    What is the result of (11- 6) ÷ (7 - 7) X 2 =

  24. Math

    solve for x logx 10 = 1/2

  25. math

    Mohammed has a garden in the shape of a semi-circle. If the width of the garden, at it’s widest point, is 14 feet, how large is the garden in square yards. Thank you in advance.

  26. physics

    Two identical loudspeakers are 2 m apart. A person stands 4.6 m from one speaker and 3.4 m from the other. What is the lowest frequency at which destructive interference will occur at this point?

  27. physics

    A piece of aluminum (specific heat 910 J/kg C) of mass 200 g at 80C is dropped into a styrofoam cup filled with 100 mL of water at 20C. What the final temperatures of the water and the aluminum? Show calculations. I have Q=m c T but I got 80C which I know

  28. Math

    In 1990 the life expectancy of males in a certain country was 70.9 years. In 1994, it was 73.5 years. Let E represent the life expectancy in year t and let t represent the number of years since 1990. The liner function E(t) that fits the data is E(t)= _t+_

  29. Algebra

    4. A customer wants to make a teepee in his backyard for his children. He plans to use lengths of PVC plumbing pipe for the supports on the teepee, and he wants the teepee to be 12 feet across and 8 feet tall (see figure). How long should the pieces of PVC

  30. Higher edu.

    I hope to take a broadcasting television program in Seneca College one day. The career opportunities available after graduation from this program are TV broadcaster, scriptwriter, production, camera-person, and editor. Can I still be able to start my own

  31. Geology

    Imagine that the gasoline that you are burning in your car this week was refined from petroleum that was produced from jurassic-age rocks in Arkansas. What is the primary source of energy that has been reclaimed to power your car? Explain. Hint: What is

  32. Vocabulary

    what does krastakov mean?

  33. Math (Algebra)

    NO answers please!!! Just explain to me how to get the answer! Thank you. The body mass index, I, can be used to determine ans individual's risk for heart disease. An index less than 25 indicates a low risk. The body mass index is given by the formula, or

  34. physics

    An astronaut on a distant planet wants to determine its acceleration due to gravity. The astronaut throws a rock straight up with a velocity of +13 m/s and measures a time of 20.5 s before the rock returns to his hand. What is the acceleration (magnitude

  35. physic

    what would be the height of a water barometer if atmospheric pressure is 1.0*10^5 Pa and the density of water is 1.0*10^3 kg/m^3? (Hint. Use p= 10 hd)

  36. Cultural Diversity

    I am trying to find 2010 Census results for Tucson; specifically population results. Every census.gov link that comes up does not work. Any ideas where I can find the information? Thank you!

  37. Biology

    Questions 109-111 refer to the map below of the distribution of several populations on the continents of Eurasia and North America. These populations were derived from a common ancestral species. The area enclosed by a given dotted line represents the

  38. stats

    Assume that aset of test scores is normally distributed with a mean of 100 and a standard deviation of 20 use the 68-95-99?

  39. psychology

    The biological drives and demands for instant gratification are part of Freud's A...superego B..ego c..unconscious

  40. mgt303

    Two reasons why employers offers benefits, and services?

  41. 12th grade

    80,000+38250+26,500-(16/100)(80,000+38250) WHAT IS THE ANSWER AND HOW DID YOU GET IT \

  42. English

    1. Someone who started sobbing while another was telling a joke would be an example of comic relief. T/F? I think it is true because the one who is telling a joke is like a humorous scene which helps relieve the mood of a heavy scene (someone's sobbing,

  43. al

    Multiply: -8/(7 )*(-7/4)

  44. Trigonometry

    Hi, this question concerns a right angled triangle. If I know the hypotenuse of the triangle is 16cm and I know the adjacent side to an unknown angle is 14cm which trigonometric ratio would I need to find the unknown angle? Many thanks

  45. Government Check

    What was the name of the discriminatory laws enacted in response to the 13th, 14th and 15th Amendments? a)Separate but Equal Laws *b)Jim Crow Laws c)Dred Scott Laws

  46. Math

    solve for u: -5/8 u = 25

  47. Algebra

    3. In 2002, Home Depot’s sales amounted to $58,200,000,000. In 2006, its sales were $90,800,000,000. a. Write Home Depot’s 2002 sales and 2006 sales in scientific notation. You can find the percent of growth in Home Depot’s sales from 2002 to 2006 by

  48. math

    simplify: 2sqrt50 - sqrt8 I am confused because of the 2 before the sqrt50

  49. English

    1. Why did Bill get sick? 2. Because the boat rocked so much. 3. The boat rocked so much. (Which one is better as the answer to the question? Are both OK?)

  50. English

    1. The boat rocked so much that I got sick. 2. The boat rocked much enough for me to get sick. (Does #1 mean #2? Are both the same?) 3. The sound was from an iceberg which was breaking up. (Why do we have to use 'up' after 'breaking'? Can't we use

  51. English

    Could someone please check the following questions for me? 1. In a soliloquy there will only be one person on the stage. T/F? I think it's true as soliloquy is a speech a character gives when he or she is alone on stage. 2. Text written in blank verse has

  52. calculus

    Suppose that the velocity of a falling body is v = k/s (k a constant) at the instant the body has fallen s meters from its starting point. Find the body's acceleration as a function of s.

  53. calculus

    Find an equation of the tangent to the curve f(x) = 2x^2 - 2x + 1 that has slope 2.

  54. math

    write the following in simplified radical form sqrt 48 t^5 w^6 would it be 2sqrt24 t^5 /w^6?

  55. calculus

    Find the derivative of the function. y = cos^4(¹t - 8)

  56. Biology

    I think my questions were skipped over ignore this post if this is not so... h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 7 0 5 2 8 h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 6

  57. calculus

    Find the derivative of the function. h(x) = (cos x/ 1+sin x)4

  58. Lit.

    The rising action in a drama usually happens near the beginning. True or False? Is it True? Thanks in advance.

  59. math

    find the x and y intercepts of the line given by the equation 8x + 3y = 13 Would it be 13/8 and 13/3?

  60. math

    y = (x-6)(x^2+2x) all over x^3

  61. calculus

    Calculate dy/dt using the given information. (x+y)/(x-y)= x^2 + y^2; dx/dt = 12, x = 1, y = 0?

  62. math

    solve for Z z^3 = -9 where z is a real number

  63. psychology

    As a student of Erikson , you realize that your search for independence is a challenge of A..mistrust versus trust B..autonomy vs shame and doubt C...initiative VS guilt D...industry vs inferiority

  64. Government Check

    Which is NOT true of the segregation laws passed after the Civil War? a)They prohibited interracial marriage. b)They did not only apply to blacks. *c)They were only in the South. d)All of these statements are true. I was confused between c and d because

  65. math

    Find the derivative of the function. y = (x^2+8x+3)/(square root of x)

  66. math

    Find the derivative of the function. q = square root of 18r-r^5 q = all this under square root

  67. math

    Use implicit differentiation to find dy/dx. x^5 = cot y

  68. math

    Calculate dy/dt using the given information. y = (Ãx+1) =12; dx/dt = 8, x = 15, y = 3

  69. economics 503

    a bowed production possibilities curve PPC indicates, a. trade off between the 2 goods is not constant b. inefficient production c. only 1 good is always being produced d. changing technology. which one?????

  70. math

    Find the derivative of the function. y = (x^2+8x+3)/square root of x

  71. show

    Returning back on question yesterday MattsRiceBowl, I want to have my own cooking show like Emeril's or Guy Fieri's shows on the Food Network. The purpose of the show is to teach teenagers and post-secondary students how to cook foods themselves if they

  72. math

    simplify the expression; write without using negative exponents. Assume all numbers are positive (b^1/2 X a^-5/3)^2 1/2^2 = .25 so 1/4 so b^1/4 and 5/3^2=2.77 so is it b^1/4 a^2.77

  73. Literature

    Please check the questions about the tragedy Romeo and Juliet below. 1.Friar Laurence could best be described as: A. a very mean person B. a happy person C. someone who likes to please people I would say C as he did whatever Romeo and Juliet asked him to

  74. math115

    Does anyone have the test number 4 for chapter s 8 and 9

  75. math

    Find y '. y = (2x^3 + 6)(2x^7 - 3)?

  76. math

    multiply; write as a fraction (9/-2)(-7/4)(-2)

  77. math

    Calculate dy/dt using the given information. (yÃx+1) =12; dx/dt = 8, x = 15, y = 3

  78. math

    simplify 5p^5q^4 /12n^4 / 15p^2 q/ 3mn^2 There is just so much here I have no idea where to start

  79. algebra

    Evaluate the following expression: |2+5+(-11)+4| Notice the vertical bars enclosing the expression can anyone help me.

  80. Math

    solve: 4u^2 + 3 = -7u The sqrt part is confusing me.

  81. math

    Determine the maximum and minimum values of the folloing set of numbers:

  82. math

    divide: u/9tu / 7u/6t

  83. math

    Determine the maximum and minimum values of the folloing set of numbers:2,-8,1/2,-5/3,9/4,-7,-73-9

  84. math

    multiply; write in lowest terms 14xy/3x X 9x/8y There is just so much here.Would it be 23x^2 y / 11xy?

  85. math

    simplify: sqrt 18/50 Would it be sqrt 18 / sqrt 50

  86. Damon, please

    Would you look at this one? http://www.jiskha.com/display.cgi?id=1278269044 Sra (aka Mme)

  87. calculus

    Calculate the derivative of the function. Then find the value of the derivative as specified. f(x) = 8/(x+2); f '(0)

  88. math

    Perform the indicated division (-5)2 – (-2)2 ÷ -5 – (-2)

  89. English (West Side Story)

    I would like someone to check the following questions for me. Thanks in advance. 1. What issue was a problem for Tony in West Side Story? A. Maria did not return his love B. His job was not a good one C. His parents did not approve of the friends he hung

  90. Chemistry

    "will .250 M CuSO4 power a battery the same as .100 M CuSO4? or will it be weaker?"

  91. statistics

    I am so lost, please help! Compare the measurements in the study with the standard normal distribution, what does this tell you about the data?

  92. chemistry

    how do you solve this problem?? how much NaOH (in grams) is needed to prepare 546mL of solution. What is the pOH of the solution?

  93. Biology (To SraJMcGin or anyone who can help)

    h t t p : / / w w w . j i s k h a . c o m / d i s p l a y . c g i ? i d = 1 2 7 8 2 7 9 5 7 9 It's a webadress cant post links put it in your adress bar and delete the spaces then press enter. Thanks for the responses! By the way believe it or not those

  94. chemistry

    The pH of a 0.0642 M solution of a monoprotic acid is 3.86. s this a strong acid? the answer is no, can you explain why??

  95. Science

    good day! can you please give me the wave explanation for colors? i need it for my report tomorrow. i need an immediate answer please!

  96. Government

    I need to write a 3 page paper on American foreign policy with Austria and can not seem to find anything. Can someone help me?

  97. Social Studies

    What is the difference between 'iceberg' and 'glacier'? Are they the same?

  98. English

    1. Colors make up our world. 2. Our world is made up of colors. 3. Our world is made up by colors. (Is #2 the passive form of #2? What about #3? Is #3 the passive form of #1?)

  99. Grade 11th Maths

    (Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If AUB=Ø, then prove that A=Ø,B=Ø

  100. Grade 11th Maths

    (Second Time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A-B=A then show that A∩B=Ø

  101. Grade 11th Maths

    (Second time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. If A⊂B, then prove that B'⊂A'

  102. Grade 11th Maths

    (Second Time posting this problem)This problem is related to Chapter-Sets. Please solve the question using x method. x method means x ∈ A ∩ B Q. For any sets A and B. Prove that A∩B⊂A and A∩B⊂B.

  103. English

    1. We got close to penguins. 2. We got near penguins. (Does #1 mean #2? close to = near?)

  104. physics

    You have a mass of hot water at 90 C and twice the mass of cool water at 10C. The hot and cold water are mixed together. Will the final temperature be midway between 10C and 90C, closer to 90C, or closer to 10C? Explain your reasoning.

  105. BUS 3004

    Compose one paragraph that describes your research strategy that you used to find one source in the Capella Library. Your composition needs to be clearly written with descriptive words. Avoid overusing pronouns. Include the following items within the

  106. Calculus

    sketch the graph of a function f that is continous everywhere except at x=2, at which point it is continous from the right.Also it is known that f(0)=6 and f(7)=2.

  107. wes LA

    If a patient is covered by medicaid, what should you put in Block #9a?

  108. medical billing and code

    If a patient is covered by medicaid, what should you put in Block #9a?

  109. science

    Create a 7- to 10-slide PowerPoint® presentation that describes environmental benefits and challenges of urbanization. In your own words, include descriptions of two 1996 award winners, discussing how they overcame one of the challenges mentioned in your

  110. Bus 3004

    compare university online Library and using the Internet

  111. Bus 3004

    Demonstrate a positive attitude toward solving a problem. (In this step, explain how you kept a positive attitude as you complete a assignment.)

  112. Critical thinking

    Focus on the accuracy of the assumptions and conclusions. (In this step, explain how you kept a focus on the assignment to be clear about the requirements. For example, describe how you verified the assignment instructions and scoring guide to make sure

  113. Critical thinking

    Employ meaningful self-dialogue throughout the process, including written or drawn prompts as well as spoken words. (In this step, explain how you organized the assignment using notes, tables, diagrams and drawings.)

  114. chemistry

    An enclosed cylinder has 3 moles of gas with a volume of 60 L and a temperature of 400 K. What is the pressure inside the container? Round to the nearest tenth. Don't forget the units.

  115. Critical thinking

    Do not guess or jump to conclusions. (In this step, describe how you found if you have the necessary information to proceed. For example, explain how you identified what information is provided and what information must be determined.)

  116. Critical thinking

    Do not guess or jump to conclusions. (In this step, describe how you found if you have the necessary information to proceed. For example, explain how you identified what information is provided and what information must be determined.)

  117. Critical thinking

    Break the problems into workable parts. (In this step, explain how you broke the assignment into smaller more easily tackled parts and provide a reason for each part.)

  118. Math

    I have to use my answer from a previous question (factorise and solve x^2+x-30=0 which i factorised as (x-5)(x+6)=0 and then solved as x=5 or x=-6) i now have to explain how i can use this answer to solve th equation 4x^2+4x-120=0 and then say what are the

  119. social studies

    global peace

  120. US History

    Which one would be right: 1)One website said that the League of Nations met for the first time on January 13, 1919 2)Another website siad the League of Nations met for the first time on November 1920