Questions Asked on
July 4, 2010

  1. 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?

    asked by Malaki
  2. 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?

    asked by jin
  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.

    asked by jin
  4. 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

    asked by jin
  5. 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??

    asked by jin
  6. 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!

    asked by Kareen
  7. 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?

    asked by josh
  8. 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?

    asked by swow
  9. 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

    asked by Akashdeep Singh
  10. 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

    asked by Akashdeep Singh
  11. 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'

    asked by Akashdeep Singh
  12. 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.

    asked by Akashdeep Singh
  13. 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.

    asked by college
  14. 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

    asked by Sarah
  15. 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

    asked by Sarah
  16. 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.

    asked by Liz
  17. 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+_

    asked by Lisa
  18. 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

    asked by P
  19. 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

    asked by Amy~
  20. algebra 2

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

    asked by Lea
  21. 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

    asked by Devon
  22. 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

    asked by Devon
  23. 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

    asked by AL 92
  24. 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 by Vince
  25. 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

    asked by JAYJAY
  26. Vocabulary

    what does krastakov mean?

    asked by Ariel
  27. 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

    asked by Lynn
  28. 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

    asked by Dave
  29. 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?

    asked by Lynn
  30. 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)

    asked by ephraim
  31. 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

    asked by Kate
  32. 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!

    asked by Kelli
  33. 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

    asked by Kate
  34. 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?

    asked by Anonymous
  35. psychology

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

    asked by Anonymous
  36. mgt303

    Two reasons why employers offers benefits, and services?

    asked by meshelle
  37. 12th grade

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

    asked by DIAOMD
  38. 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,

    asked by Dereck
  39. al

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

    asked by Anonymous
  40. 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

    asked by Sam
  41. 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

    asked by Ariel
  42. Math

    solve for u: -5/8 u = 25

    asked by Hannah
  43. math

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

    asked by Hannah
  44. 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?)

    asked by rfvv
  45. 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

    asked by rfvv
  46. 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

    asked by Lola
  47. 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

    asked by Dereck
  48. 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.

    asked by theophilus
  49. calculus

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

    asked by theophilus
  50. math

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

    asked by Hannah
  51. calculus

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

    asked by theo
  52. 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

    asked by Kate
  53. 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.

    asked by Rayna
  54. calculus

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

    asked by theo
  55. Lit.

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

    asked by Alice
  56. 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?

    asked by Hannah
  57. math

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

    asked by theo
  58. calculus

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

    asked by theo
  59. calculus

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

    asked by theo
  60. 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

    asked by theo
  61. 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

    asked by theo
  62. 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.

    asked by Hannah
  63. calculus

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

    asked by theo
  64. 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

    asked by Anonymous
  65. 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

    asked by Ariel
  66. 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

    asked by theo
  67. math

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

    asked by monica
  68. math

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

    asked by monica
  69. math

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

    asked by monica
  70. math

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

    asked by monica
  71. math

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

    asked by Hannah
  72. 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?????

    asked by bunny
  73. math

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

    asked by david
  74. 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

    asked by Kate
  75. 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

    asked by Hannah
  76. 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

    asked by Maria
  77. math

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

    asked by Hannah
  78. 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

    asked by AL 92
  79. math115

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

    asked by norma
  80. math

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

    asked by help
  81. math

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

    asked by Hannah
  82. science

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

    asked by flame
  83. math

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

    asked by Hannah
  84. 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

    asked by Hannah
  85. algebra

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

    asked by norma
  86. Math

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

    asked by Hannah
  87. math

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

    asked by norma
  88. math

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

    asked by Hannah
  89. math

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

    asked by norma
  90. 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?

    asked by Hannah
  91. math

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

    asked by Hannah
  92. math

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

    asked by norma
  93. math

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

    asked by Hannah
  94. Damon, please

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

    asked by SraJMcGin
  95. math

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

    asked by norma
  96. 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

    asked by whatever
  97. Math

    solve for x logx 10 = 1/2

    asked by Hannah
  98. calculus

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

    asked by theo
  99. math

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

    asked by norma
  100. 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

    asked by Priscilla
  101. 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.

    asked by norma
  102. Chemistry

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

    asked by Shelly
  103. 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

    asked by Kate
  104. 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?

    asked by Christopher
  105. Social Studies

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

    asked by rfvv
  106. 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?)

    asked by rfvv
  107. English

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

    asked by rfvv
  108. 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

    asked by Tara
  109. 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.

    asked by Kelly
  110. wes LA

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

    asked by Anonymous
  111. medical billing and code

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

    asked by Anonymous
  112. 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

    asked by brenda
  113. Bus 3004

    compare university online Library and using the Internet

    asked by Tara
  114. 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.)

    asked by Tara
  115. 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

    asked by Tara
  116. 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.)

    asked by Tara
  117. 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.)

    asked by Tara
  118. 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.)

    asked by Tara
  119. 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.)

    asked by Amber
  120. social studies

    global peace

    asked by phanidhar