Questions Asked on
September 16, 2011

  1. calc

    Nutrition Ruff, Inc. makes dog food out of chicken and grain. Chicken has 10 grams of protein and 5 grams of fat per ounce, and grain has 2 grams of protein and 2 grams of fat per ounce. A bag of dog food must contain at least 224 grams of protein and at

    asked by liz
  2. STATS

    The top selling Red and Voss tire is rated 70,000 miles means nothing. In fact, the distance the tires can run until they wear out is a normally distributed random variable with a mean of 82,000 miles and a standard deviation of 6,400. a. What is the

    asked by SANDRA
  3. Chemistry

    A 1.547-g sample of blue copper(II) sulfate pentahydrate, CuSO4*5H2O, is heated. The white crystals of CuSO4 that are left behind have a mass of 0.989 g. How many moles of H2O were in the original sample?

    asked by Anonymous
  4. Finance

    You can deposit 10,000 into an account paying 9% annual interest either today or exactly 10 years from today. How much better off will you be at the end of 40 years if you decide to make the initial deposit today rather than 1o years from today?

    asked by Sky
  5. Physics

    A transmission diffraction grating with 600 lines/mm is used to study the line spectrum of the light produced by a hydrogen discharge tube with the setup shown above. The grating is 1.0 m from the source (a hole at the center of the meter stick). An

    asked by AfterLife
  6. science

    the height above the ground of a child on a swing varies from 0.5m at the lowest point to 2.0m at the highest point. what is the maximum speed of the child?

    asked by Anonymous
  7. Physics

    Suppose two thin flat plates measure 3.5m x 3.5m and are separated by 6.5mm. They are oppositely charged with +-20microCoulombs. Estimate the total force exerted by one plate on the other (ignore edge effects).

    asked by Sarah
  8. chemistry

    how do you determine the last digit in any measured number?

    asked by Tracy
  9. physics

    A student throws a set of keys vertically upward to his fraternity brother, who is in a window 3.95 m above. The brother's outstretched hand catches the keys 1.80 s later. (a) With what initial velocity were the keys thrown?

    asked by Carolina
  10. physics

    A cat is being chased by a dog. Both are running in a straight line at constant speeds. The cat has a head start of 3.3 m. The dog is running with a speed of 9.0 m/s and catches the cat after 6.7 s. How fast did the cat run? I see that the velocity and

    asked by angela
  11. physics

    A point charge of -8.4 µC is at the origin. a)What is the electric potential due to this charge at (x,y) = (3.5 m, 0 m) b) What is the electric potential due to this charge at (x,y) = (-3.5 m, 0 m) c) What is the electric potential to this charge at (x,y)

    asked by sonia
  12. physics 8b

    A piece of wire with mass per unit length 88 g/m runs horizontally at right angles to a horizontal magnetic field. A 6.5A current in the wire results in its being suspended against gravity. What is the magnetic field strength? Express your answer using two

    asked by help
  13. Sociology

    Q. Jane is thirteen and a middle school student. At her age the most important agent of socialization in her life is likely to be the: a)community b)peer group c)media d)school i think its b. please help me

    asked by help
  14. Math word problems

    Jessie finished the first race in 2 minutes 7 seconds. Tim finished 12 seconds faster than Jessie. Juan finished 8 seconds faster than Tim. How long did it take Juan to finish? 2.07 - 0.12 = 1.95 1.95 - 0.08 = 1.87 Juan finished at 1.87?

    asked by Mia
  15. economics

    Why do long-run elasticities of demand differ from short-run elasticities? Consider two goods: paper towels and televisions. Which is a durable good? Would you expect the price elasticity of demand for paper towels to be larger in the short run or in the

    asked by aaniya gill
  16. business english

    paragraph 2 Background Your favorite cousin has moved to your town and is looking for a job. Her previous experiences are working as a cashier and sales clerk at two department stores. You know she plans apply at similar stores in your town. but you also

    asked by henrietta
  17. algebra

    An airplane flies from City A in a straight line to City B, which is 70 kilometers north and 140 kilometers west of City A. How far does the plane fly?

    asked by Anonymous
  18. Math

    Write each expression as the product of two binomials. 1) a^3 - 3a^2 + 3a - 9 2) 2x^2 - 3x^2 - 4x + 6

    asked by Camile
  19. Math

    A manufacturer uses a 28 x 41 metal sheet to construct an open box by cutting out squares from each corner. What length square should be cut to maximize volume?

    asked by Terry
  20. World Lit

    Define the characteristics of the Epic Hero

    asked by Jackson
  21. Statistics

    The lifetime of television produced by the Hishobi Company are normally distributed with a mean of 75 months and a standard deviation of 8 months. If the manufacture wants to have to replace only 1% of its televisions, what should its warranty be?

    asked by Karen
  22. accounting

    I have tried to figure out how to do this for four days and my textbook does not give an example on how to do this problem. Lower-of-Cost-or-Market Corrs Company began operations in 2007 and determined its ending inventory at cost and at lower of cost or

    asked by Nick
  23. calculus

    For what values of a and b that make the function f continuous everywhere. f(x)={(x^2-4)/(x-2) if x

    asked by Derrick
  24. Chemistry

    For the following acid-base reaction, calculate the mass (in grams) of each acid necessary to completely react with and neutralize 5.00 g of the base. HCl(aq)+ NaOH(aq)->H20(l)+NaCl(aq) Please explain how to do this.

    asked by Brittany
  25. Trig

    2sin^2(x) = 2 + cos(x) interval [0,2pi) How do I solve this? Help would be greatly appreciated!

    asked by Wendy
  26. physics

    A cannon is fired horizontally from a platform (see figure). The platform rests on a flat, icy, frictionless surface. Just after the shell is fired and while it is moving through the barrel of the gun, the shell (mass 3.0 kg) has an acceleration of +2450

    asked by angela
  27. Chemistry

    I have this question and I am pretty sure on what to use to solve it but I am just stuck. The reaction of 8 g of hydrogen and 28 g of carbon monoxide gave 16 g of methanol. What was the theoretical yield if the percent yield was 50%? actual yield

    asked by Justin
  28. english

    I need help writting a discussion on why the follow paragraph is effective including variety and rhythum of the author's writing:Individuals can be denied credit for a number of reasons. Individuals who are near limits on existing cards, have too much

    asked by lo
  29. math

    use a scatter plot to determine the relationship between the x values and the y values. x 7 2 4 5 1 6 3 7 5 26 20 15 30 12 25 possible answers: negative linear relationship nonlinear relationship no relationship positive linear relationship thanks for your

    asked by kk
  30. physics

    A train moving with constant velocity travels 190 m north in 12 and an undetermined distance to the west. The speed of the train is 36 m/s. Find the direction of the train's motion relative to north.

    asked by anonymous
  31. math

    ok the directions say.. "using different scales,make either two line graphs or two bar graphs for the set of data.use a break symbol in only one of the graphs.explain which graph shows the data more clearly. "data" ___________________________________ year

    asked by SJH all the way_<3
  32. Precalculus!

    So I have this major assignment due, and I cant seem to figure this one out: A right triangle is formed in the first quadrant by the x- and y-axes and a line through the point (5, 3). Write the length L of the hypotenuse as a function of x(the x-intercept

    asked by kajal
  33. physics

    Hello, can anyone help me this problem? The author's cat enjoys chasing chipmunks in the front yard. In this game, the cat sits at one edge of a yard that is w = 32 m across (see figure), watching as chipmunks move toward the center. The cat can run faster

    asked by jordan
  34. Math

    Use the distance formula to determine whether the points lie on the same line. (0,4),(7,-6),(-5,11). I know the distance formula, but I don't see how that will help me find out if they lie on the same line.

    asked by Christina
  35. chemistry

    B. Everyone knows that water is supposed to boil at 100° C. Why did your water sample boil at a different temperature? C. While heating two different samples of water at sealevel, one boils at 102o C and one boils at 99.2o C. Calculate the percent error

    asked by emmanuel
  36. physics

    ok i have a problem to work on in my new course, and i was wondering what i need to do to tackle it. the question is as follows: An electron is projected with an initial velocity Vo=10^7m/s into the uniform field between the parallel plates "E". the

    asked by mo
  37. calculus

    Find the value of the constant C that makes the following function continuous on (-infinity, +inf) f(x)={cx+2 if x is in (-inf,2] cx^2-2 if x i in (2, inf)

    asked by Logan
  38. physics

    A thief is trying to escape from a parking garage after completing a robbery, and the thief's car is speeding (v = 14 m/s) toward the door of the parking garage (see figure). When the thief is L = 31 m from the door, a police officer flips a switch to

    asked by simi
  39. physics

    A ball is thrown upwards and returns to the same position. Compared with its original speed after release, its speed when it returns is about

    asked by Anonymous
  40. Statistics

    X is normally distributed with a mean of 250 and a standard deviation of 40. What value of X does only the top 15% exceed?

    asked by Joi
  41. Physics

    One can get a good idea of how deep a well is, for example, by dropping a rock and listening to how long it take to hear the rock as it hits the bottom. Suppose a rock was dropped into a well that was 410 meters deep and after the rock hits the bottom, a

    asked by Jeff J.
  42. algebra

    the number of students is 150 more than adults, the student tickets are $3 and adult tickets are $5 the total sales was 4730 how many students attended

    asked by heidi
  43. College Chemistry I

    A method for recycling scrap aluminum converts it to alum [potassium aluminum sulfate dodecahydrate, KAl(SO4)2·12H2O]. What is the maximum amount of alum (in metric tons) that can be prepared from 3.12 metric tons of scrap aluminum (1 metric ton = 1000

    asked by Aha
  44. physics

    A 4.62 x 10-5 kg raindrop falls vertically at constant speed under the influence of gravity and air resistance. After the drop has fallen 83.7 m, what is the work done by gravity? Answer in units of milliJoule (a thousandth of a Joule) and use 9.8 m/s2 for

    asked by hannah
  45. calculus

    For what value of the constant c is the function f continuous on the interval negative infinity to positive infinity? f(x)={cx2+7x if x

    asked by Aly
  46. calculus

    For what value of the constant c is the function f continuous on the interval negative infinity to positive infinity? f(x)={cx2+7x if x or =2

    asked by Aly
  47. Biology

    3. The ABO blood type is controlled by a single locus, called I, with alleles IA, IB, and IO. These give rise to the blood type phenotypes, A, B, AB, and O. a. Suppose that parents know their phenotypes: the father is type AB and the mother is type O. What

    asked by kay
  48. science

    how many liters of oxygen will react with 124.5 liters of propane

    asked by david
  49. physical

    QUESTION 4 [18] Two long current-carrying wires are shown in Fig 1. They are carrying the same current I which are pointing in opposite directions. Their separation is s. A field point Q lies in their plane, a distance ñ from their midline. 4.1 Find the

    asked by Anonymous
  50. Biology

    Typically we talk about blood types as B-positive or AB-negative and so forth. The positive and negative part of the blood type is determined by a completely separate gene (the Rh locus). The ABO locus and the Rh locus are inherited independently, like pea

    asked by kay
  51. geometry

    Find all points that are 24 units from the point located at 31 on a number line. A. 24 and 31 B. 31 and 7 C. 24 and 55 D. 7 and 55

    asked by Anonymous
  52. Physics

    On the earth, you throw an object up in the air at some velocity, v, and it reaches a maximum vertical displacement (max. height if you prefer) of 4.8 meters. If you went to the moon, where the value of the gravitational acceleration of the moon is 1/6 of

    asked by Micheal G.
  53. calculus

    The limit as x approaches 0 of ((4^x)-1)/x The limit above represents the derivative of some function f(x) at some number a. Find f and a.

    asked by Logan
  54. ap history

    please explain the rise of class conflict between business and labor in the 1870s and the growing hostility to immigrants especially chinese i tried to google it but not much explanation. please HELP HELP HELP! THANK YOU SO MUCH!

    asked by heather
  55. science

    WRITE, in no less than 300 words, a brief summary tracing the nutrition needs of both a man and a woman throughout the various stages of life. Address the nutritional needs for the following: Infants Teenagers Adults Women during pregnancy Older adults

    asked by mary
  56. Physics

    Can someone please show me step by step how to normalize e^-5x in the interval (0, infinity)? I have read a lot of different books etc but need it explained to me in plain English or showed to me step by step because I am just not getting it. Thank you

    asked by Tammy
  57. physics

    A 0.05 kg toy is made up of a spring of constant 466 N/m. When you place the toy on the floor, cock the spring 5 cm and release it, the toy jumps upwards. What is in Joules the spring potential energy stored in the toy when sitting on the floor with a

    asked by hannah


    asked by MORENA
  59. chem

    150 cm3 0.24 M naoh solution react with excess al(no3)3, calculate the mass of saodium aluminate produced. al(no3)3 + 4naoh -> naalo2 + 3 nano3 +2h20 i got 0.738g.. is my answer correct? if im wrong could u show me the calculation?

    asked by Yuni
  60. Algebra

    I solve this equation by the substitution method 7x-4y=13 x=3 and I got y=2 and x=3 am I right. Thanks

    asked by Al
  61. Physics

    You lean over the edge of a building that is 106 meters above the ground and throw an object straight upwards. This object takes 3 seconds to reach its maximum vertical displacement above your hand and then falls to the ground. From the moment it leaves

    asked by JJ
  62. physics

    you throw 2 balls at a bunch of pins. is it better to throw a putty or rubber ball?

    asked by cody
  63. spanish

    Please translate these words into a sentence. bebur, manuel, debe, aqua

    asked by Kathryn
  64. physics

    A compact disc spins at 2.3 revolutions per second. An ant is walking on the CD and finds that it just begins to slide off the CD when it reaches a point 3.5 cm from the CD's center. What is the coefficient of friction between the ant and the CD?

    asked by Jack
  65. physics

    It takes 9.10 J of work to stretch a spring 5.10 cm from its unstressed length. What is the spring constant k in N/m?

    asked by hannah


    asked by David
  67. calculus

    The limit lim as x approaches 1 of (x^12-1)/(x-1) represents the derivative of some function f(x) at some number a. Find f and a.

    asked by Logan
  68. Politics?

    Hello! I have to write an affirmative congress speech on this bill, but I'm not really sure about what the bill means..? Can anyone help me figure out what it's talking about/what I'm trying to affirm? "A resolution to promote justice and human rights in

    asked by michelle
  69. calculus

    For what values of a and b that make the function f continuous everywhere. f(x)= {x−2x2−4 if x

    asked by Nik
  70. Algebra

    I'm really lose with this problem...HELP Using Cramer Rule If D=O use another method to solve 2x/3-5y/2=3/2 -x/4+5y/2=7/2 I don't know where to begin on how to solve this problem.

    asked by Gwendolyn
  71. math

    explain why the second partial product is always greater than the first partial product when you multiply a 3-digit number by a 2-digit number.

    asked by stephanie
  72. Trigonometry

    Solve. 2sin(2ƒÆ) + ã3 = 0 interval [0, 2ƒÎ) How do I start this? I feel like maybe Trig Identities, but I'm not really sure.

    asked by Josh
  73. Geometry

    If PT=3x-4 and QS=4x-3 how do I solve

    asked by Charlie
  74. Physics

    When the sun was directly overhead in Syene, why was it not directly overhead in Alexandria?

    asked by Alex
  75. Ashford

    Factors such as temperature, humidity, and air movement make it easier to analyze and measure air pollution. True or false

    asked by Darrell
  76. Physics

    It takes 7.9 J of work to stretch a spring 4.6 cm from its unstressed length. How much (in J) spring potential energy is then stored by the spring?

    asked by Elisabeth
  77. history

    Who ruled over Babylon's last era of greatness

    asked by Maria
  78. calculus

    consider the function f(x)=(36-x^2)^(1/2) whose graph describes the upper semi circle with radius 6 centered at the origin.let a be any number in the open interval (-6,6).for a not equal to 0 determine the slope of the line through the origin and the point

    asked by Anonymous
  79. chemistry

    Somewhat confused... my homework is asking me to calculate morality of sodium thiosulfate from a 55 ml solution. the sodium's volume is 50 ml and has a concentration of 0.25M. The rest of the 55ml comes from the 5ml of HCL.

    asked by Molarity
  80. math

    i purchased an item for $10.86 and the sales tax was 8.625%. What was the cost before taxes?

    asked by jerry
  81. Algebra

    Need help with this problem Substitution 5x-3y=-11 (1) 3x+2y=1 (2)

    asked by Al
  82. computer

    what is the difference between a compiler and and interpreter? is the interpreter used for C ?

    asked by Sia
  83. chem (urgent)

    Can someone please explain to me in simple terms what the eutectic point and temperature are?

    asked by laura
  84. english

    When Marcos walked into the room, we turned on the lights and yelled "Happy birthday!"

    asked by kayla
  85. Algebra II

    y=u+1/u+2 solve for "u". Please help me :)

    asked by Gaby
  86. Math

    Factor - 12x^2+10x+1

    asked by Sally
  87. physics

    A 0.730 kg particle has a speed of 3.00 m/s at point A and kinetic energy of 7.40 J at B. What is its speed at B? Answer in units of m/s.

    asked by hannah
  88. Com/155

    How do I come up with a good topic sentence to explain how the purpose, audience,tone, and content impact academic writing?

    asked by Amanda
  89. Biology

    In a mouse cell at the start of mitosis, how many chromatids are present?

    asked by kay
  90. statistics

    What is the relationship between Sample Size and the width of the Confidence Interval? Please explain further as to why

    asked by denise
  91. algebra

    |5x+3|>-2 please help me solve and when graphing it could you describe what it would look like? i know it would have open circle, but is it and "and" or "or" inequality.

    asked by Lucy
  92. Algebra

    solve equations by elimination 2x-6y=3 (1) 4x+9y=-1 (2)

    asked by Al
  93. science

    A -10 nC charged particle has a velocity v=3i+4j+5k ms-1 as it enters a magnetic field B=10000Tj. Calculate the force vector on the charge. What electric field intensity is required so that the velocity of the charged particle remains constant?

    asked by justina
  94. history: please help for a survey

    what is your reaction on the first and second opium war?

    asked by Mely
  95. Essay Paper

    I am writing a research paper on "Teen Parenting" and I'm writing about it in a good way. But I'm trying to figure a a REALLY REALLY good introduction sentence. Help Please Mine: It is possible to be a wonderful mother at any age.

    asked by Lynn
  96. social studies

    what is the constitution

    asked by Nicole
  97. Genetics

    1) The F2 progeny from a cross exhibits a modified dihybrid ratio of 9:7 instead of 9:3:3:1. What phenotype ratio would be expected from a testcross of the F1 progeny? 2) In Drosophila, mutants a through g all have a white eye phenotype. The following data

    asked by AJ
  98. maths

    A circle has a circumference of 1 Cm and an equilateral triangle has sides each 1 Cm long. How many complete turns of the circle will it take to go around the triangle to its original starting position.

    asked by jojo
  99. physics

    There are Two boxes on top of each other. The top has a mass of 2.99kg the bottom one has a mass of 7.89 kg. A horizontal force of 39.97 newtons is applied to the left to move them both at an acceleration of 1.42m's^2 Find the minimum coefficient of static

    asked by squires
  100. physics

    It takes 5.50 J of work to stretch a spring 5.90 cm from its unstressed length. What is the spring constant k in N/m?

    asked by hannah
  101. calculus

    Follow this link please! It is an interactive question that I just cannot figure out

    asked by Aly
  102. math


    asked by Vic
  103. psychology

    describe the frequency theory and the place theory of hearing

    asked by rumunda
  104. What is your opinion

    What films or t.v. programs do you feel depict western influence in Asia?

    asked by Ana
  105. math

    how to write acheck in words for one thousand sixty

    asked by yvette
  106. ALGEBRA


    asked by KK
  107. Algebra


    asked by Lana
  108. science

    The making of the nuclear reactor was an advance in

    asked by sandra
  109. priciples of business

    how to make a project presentation on , International Organization Enviornment

    asked by myra
  110. physics

    Amy threw a ball of mass m=0.79 kg horizontally with an initial velocity v=33.4 m/s from a height h=1.9 m. What is the kinetic energy of the ball just before it touches the ground? Express your answer in Joules and use 10 m/s2 for g.

    asked by hannah
  111. math

    what is 2011 minus 1947

    asked by shasa
  112. physics

    A 0.05 kg toy is made up of a spring of constant 466 N/m. When you place the toy on the floor, cock the spring 5 cm and release it, the toy jumps upwards. What is in Joules the spring potential energy stored in the toy when sitting on the floor with a

    asked by hannah
  113. physics

    A 0.07 kg toy is made up of a spring of constant 375 N/m. When you place the toy on the floor, cock the spring 7 cm and release it, the toy jumps upwards. What is in Joules the mechanical energy of the toy when sitting on the floor with a cocked spring?

    asked by hannah
  114. English

    I was very tired, but it was great to be in Antarctica. Everything was covered with snow. It was so beautiful. (What does "It" refer to in the last sentence? Does it refer to 'Antarctica' or 'everything' or 'snow'?)

    asked by rfvv
  115. Algebra


    asked by miranda
  116. What is your opinion

    Do you feel that there are other conflicts even today where the West are imposing themselves on other countries/Cultures?

    asked by Ana
  117. Calculus

    proof that the limit as x approaches 2 of x to the 4th equals 16

    asked by Greg Gilchrest
  118. social studies

    what is the capital of mexico

    asked by Nicole
  119. algebra


    asked by jennifer
  120. training

    may i know whats the training program for a call center to deal with customer service? thank you

    asked by oBun