Questions Asked on
July 19, 2010

  1. math..help?

    from 1500 lottery tickets that are sold,3 tickets are to be selected for first, second, and third prizes. how many possible outcomes are there?

    asked by sha
  2. verb tense

    i am to write five sentences about the role of education in successful financial planning, in which i am correctly to use a different verb tense in each sentence

    asked by shawna
  3. CJS230

    This is my assignment and I don't understand it. Write a 200- to 300-word paper in APA format explaining a difference between the conventional forms of rehabilitation programs and the newer programs of today. Why do you think this change is important to

    asked by Isabella
  4. english

    Lucia works for a lawyer who depends on her for everything. Answering phones, planning business trips, proofreading documents, and scheduling appointments. Is this sentence grammatically correct

    asked by james
  5. business

    Many of the toy products sold in the United States are imported from Taiwan because the Taiwanese can produce these products more efficiently than U.S. companies. This is an example of

    asked by kyle
  6. AED

    Develop a protocol for channeling students into a gifted program. In 200 to 300 words, include the following:

    asked by Anonymous
  7. physics

    A 9.5-kg monkey is hanging by one arm from a branch and is swinging on a vertical circle. As an approximation, assume a radial distance of 70 cm between the branch and the point where the monkey's mass is located. As the monkey swings through the lowest

    asked by Anonymous
  8. Immigration

    What are the three most significant changes that have occurred in our understanding of the immigration process

    asked by mike
  9. physics

    A pump is required to lift 800 liters of water per minute from a well 15.0 m deep and eject it with a speed of 17.0 m/s. How much work per minute does the pump do?

    asked by tom
  10. chemistry

    The amount of indicator used in an acid-base titration must be small. why??

    asked by Jin
  11. History 1301

    How did human history in North America during the period described in the Prologue differ from the events of Asia, Eurasia, and Europe? Be specific. How were these differences important to the international state of affairs in 1450?

    asked by Karen
  12. chemistry

    Write balanced equations and solubility product expressions for the solubility equlibria of the following compounds: a. CuBr b. ZnC2O4 c. Ag2CrO4 d. Hg2Cl2 e. AuCl3 f. Mn3(po4)2 can you give me some examples using the compounds given?

    asked by Jin
  13. chemistry

    Solid NaI is slowly added to a soln that is 0.010M in Cu+ and 0.010M in Ag+. a. Which compound will begin to precipitate first? b. Calculate [Ag+] when CuI just begins to precipitate/ c. What percent of Ag+ remains in solution at this point?

    asked by Jin
  14. chemistry

    Explain, with balanced ionic equations, why a. CuI2 dissolves in ammonia solution b. AgBr dissolves in NaCN solution, c. HgCl2 dissolves in KCL solution.

    asked by Jin
  15. college physics

    a 7500 kilogram rocket blasts off vertically upward from the launch pad with a constant acceleration of 2.25 m/s squared and feels no appreciable air resistance, when it reaches the height of 525 meter its engine suddenly fail so that the only force acting

    asked by kat
  16. math

    how do i represent 1/(1+x^4) in general taylor polynomial. I know the pattern is 1-x^4+x^8-x^16..... I don't know how to represent this pattern in variables equation form

    asked by eng
  17. Physics

    A 15-g bullet is fired horizontally into a 3.000-kg block of wood suspended by a long cord. The bullet sticks in the block. Compute the speed of the bullet if the impact causes the block to swing 10 cm above its initial level. Initial Velocity of

    asked by Lony
  18. physics

    A rope 26 ft long is attached to two points A and B, 20 ft apart at the same level. A load of 250 lb is carried at the middle of the rope. What forced is exerted on A?

    asked by senior pogi
  19. Medical Terminology

    I need to devise a memory aid for any five terms relating to the genitourinary and five terms relating to the female reproductive system.

    asked by Randi Grzesik
  20. math

    m=18 kg w=? solve

    asked by kftdfwekdfqtyfdtqkwd
  21. Physics

    a ball is thrown vertically upward from the ground with the velocity of 30m/s. a) how long will it take to rise to its highest poitn? b) how high does the ball rise? c) how long after projection will the ball have a velocity of 10m/s? d) what is the total

    asked by Patrick
  22. ETH 125

    Can you help me with finding sources for information on whether Chinese Americans faced discrimination through redlining, institutional discrimination, reverse discrimination, and glass ceiling? Thank You!

    asked by Anonymous
  23. Drafting an Introduction and a Conclusion

    Hi can someone assist mewith this DQ-Post a minimum 200 word response to the following: Pretend you are a teacher explaining to your class how to write an introduction and conclusion for a persuasive research paper. 1. Identify and describe the components

    asked by jay 2
  24. geometry

    what is the area of a rhombus if AB equals 9.9 and AC equals 13 and DB equals 15?

    asked by jay
  25. 7th grade

    what is the origin of pi? where does it come from? How is it used?

    asked by Anonymous
  26. statistics

    M&M plain candies have weights that are normally distrbuted with a mean weight of 0.8565 gram and a standard deviation of 0.0518 gram. A random sample of 100 M&M candies is obtained from a package containing 465 candies: the package label states that the

    asked by cindy
  27. statistical reasoning

    Systolic blood pressure for women between the ages of 18 and 24 is normally distributed with a mean of 114.8 (millimeters of mercury) and a standard deviation of 13.1. A. What is the likelihood that an individual woman has a blood pressure abouve 125? B.

    asked by cindy
  28. statistics

    Complete the hypothesis test: null hypothesis = 52, alternative hypothesis =

    asked by Shelly
  29. geometry

    a regular hexagon has a perimeter of 50m.What is the length of its side

    asked by Anonymous
  30. bnhs

    a regular triangle and a regular hexagon have the same perimeter length.If the length of a side of hexagon is 20cm,how long is each side of the triangle?

    asked by tintin
  31. geometry

    a pentagon has sides 2N+7,3N+2,6,7N,5N-6.If the perimeter is 180,find the length of each side.

    asked by tintin
  32. statistics

    what is the probability of 62 with a mean of 60 and a standard deviation of 7?

    asked by beverlt
  33. statistics z or t test

    the average weekly earnings of a production worker were $424. to know if wages, on average, have gone up since that time. To test this, you sample 64 production workers, and determine that their average salary is $432.69, with a sample standard deviation

    asked by Anonymous
  34. Chemistry

    The half-life of radon-222 is 3.82 days. If a sample of gas contains 4.38ug of radon-222, how much will remain in the sample after 15.2 days?

    asked by Leyah
  35. MAT117

    How do you determine if a polynomial is the difference of two squares?

    asked by Cindy
  36. College physics

    You have a collection of six 1.0 kilo ohm resistors. what is the smallest resistance you can make by combining them

    asked by emoni
  37. Accounting

    How can I project profits using tradition format ?

    asked by adolphus
  38. English

    How can I become my own editor and review my writing with a critical eye?

    asked by Melinda
  39. XBIS219

    Conduct research on the following three booksellers: Amazon, Barnes and Noble, and a local bookseller of your choice in terms of business model, competition, and m-commerce capabilities. At site click on Investor Relations and Careers on the bottom of the

    asked by Anonymous
  40. MAT/117

    a. Suppose that a market research company finds that at a price of p = $40, they would sell x = 37 tiles each month. If they lower the price to p = $25, then more people would purchase the tile, and they can expect to sell x = 52 tiles in a month’s time.

    asked by Michelle
  41. chemistry

    What is the pH of 0.10 M HNO2 given Ka = 4.5x10-4.

    asked by Anonymous
  42. chemistry

    An air bubble has a volume of 0.500 L at 18 C. If the pressure does not change, what is the volume, in liters, at each of the following temperatures? A. 0 C B. 425 K C. -12 C D. 575 K

    asked by amy
  43. Chemistry

    A scuba diver 40ft below the ocean surface inhales 50.0 ml of compressed air mixture in a scuba tank at a pressure of 3.00 atm. and a temperature of 8 C. What is the pressure of air in the lungs if the gas expands to 150. ml at a body temperature of 37 C?

    asked by amy
  44. Chemistry

    Determine the molar mass of each of the following gases? A. 2.90 g of gas that occupies 0.500 L at 0 C and 1.00 atm (STP) B. 1.48 G of gas that occupies 2.00 L at 0 C and 760 mmHg (STP) C. 0.726g of a gas that occupies 855 mL at 1.20 atm at 18 C? D. 2.32 G

    asked by amy
  45. Chemistry (WebWorks)

    Answer the follow questions by looking at how the HOMO and LUMO change on the Energy Profile plot. More than one answer is possible for some questions. A. The HOMO image seen at the longest constraint distance most closely resembles . (Use i, ii, iv, etc.

    asked by Anonymous
  46. chemistry

    When Cl- is added to the following reaction at equilibrium, does the reaction go in the forward direction, reverse direction, or remain unchanged? Ag-->Ag^+ + Cl^-

    asked by Anonymous
  47. chemistry

    When KI is dissolved in water, the solution will be ___. a) Strongly Acidic b) Slightly Acidic c) Neutral d) Basic

    asked by Anonymous
  48. chemistry

    When KI is dissolved in water, the solution will be ___. a) Strongly Acidic b) Slightly Acidic c) Neutral d) Basic

    asked by Anonymous
  49. Finance

    You need to buy 20 computers for your business. You have the option of leasing the equipment for four years at $5,000 per year or buying the equipment at $1,000 per unit. Calculate the total cost for both options. What is the best option and why?

    asked by Dale
  50. algebra- factoring

    given the revenue eqn R(p) =-0.08p^2+300p how do i determine the demand equation?

    asked by Anonymous
  51. epimediology

    a. A study of the relationship between exercise and heart attacks that is conducted among women who do not smoke. Explain whether gender is a confounder. b. A case-control study of the relationship between liver cirrhosis and alcohol use. In this study,

    asked by trisha
  52. geometry

    The length is 5ft less than twice the width and the perimeter is 80ft

    asked by julian
  53. medical billing and coding

    You've started your first day at Venture Outpatient Surgery Center. Explain how you would code an operative report.

    asked by Leonor
  54. math

    1/2a-5=1/3a-1 please show me how to set this problem up and solve it

    asked by katrina
  55. writing

    Is this topic sentence clear enough? Or is it too broad? If so, could I get some guidance, Im lost. This is for a comparaison/contrast paragraph. "To share the same blood type and genetic material does not ensure that two people will be exactly alike, as

    asked by Anonymous
  56. english

    We wre exceedingly pleased that Rex come home.. Is exceedingly an adjective?

    asked by Patty
  57. Astrophysics

    If an eclipsing binary system has a period of 32 days, an orbital velocity of 153km/s, and an orbit that is nearly edge-on, what is the circumference of the orbit? The radius of the orbit? The mass of the system? I can't seem to find a starting point for

    asked by Sheena
  58. geography

    How are natural resources distributed throughout the world? (a) Most natural resources are found in developed nations. (b) Most natural resources lie beneath the ocean floor. (c) Natural resources are distributed evenly among all nations. (d) Natural

    asked by Priya
  59. chemistry

    Out of the following compounds, which one is the weakest base? NH3, CH3NH2, NH2F, NH2Br

    asked by Anonymous
  60. Physics

    "Two springs are hooked together and one end is attached to a ceiling. Spring A has a spring constant of 25N/m, and spring B has a spring constant of 60N/m. A mass weighing 40.0N is attached to the free end of the spring system to pull it downward from the

    asked by Stuck
  61. immediate help needed statistics one tailed hypo

    the average weekly earnings of a production worker were $424. to know if wages, on average, have gone up since that time. To test this, you sample 64 production workers, and determine that their average salary is $432.69, with a sample standard deviation

    asked by Anonymous
  62. CHEMISTRY (WEBWORK)

    SPARTAN: Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? _____ (Use i, ii, iv, etc. for your answer) B. at the highest

    asked by arthur
  63. Chemistry

    Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,

    asked by Anth
  64. Chemistry(Webwork)

    Enter the numerical energy values (X, Y, & Z) on the y-axis and calculate the Ea and G. (Note: This is a multipart problem. First input your values for X, Y, and Z. When you are satisfied with your values submit them and check the box Go on to next part

    asked by Anth
  65. EARTH SCIENCE

    What would a calendar be like on Venus (for a hypothetical Venusian resident)?

    asked by Anonymous
  66. Math11U

    Simplify each trigonometric expression a) Sin(theta)Cot(theta)-Sin(theta)Cos(theta) c)(sin x + cos x)(sin x - cos x)+ 2 cos(squared)x

    asked by Katya
  67. UCI Webworks

    Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,

    asked by Screwed
  68. UCI webworks Problem 9

    Use the labels (CV+, –OH, CVOH, , Ea (activation energy), & G) to complete the reaction potential energy profile below. More than one answer is possible for some spots a. ? b. iii c. iv d. ii e. i these are the correct answers. idk a but i know its not

    asked by Screwed
  69. Math - Calculus

    I have to solve for x in this problem: (3x+5)/[(x-1)(x4+7)=0

    asked by Julia
  70. Math - Calculus

    Which of the following expressions are identical? a. (sinx)^-1 b. arcsinx c. sin x^-1 d. 1/sinx

    asked by Julia
  71. statistics

    Assume that a set of test scores is normally distributed with a mean of 100 and a standard devaiton of 20. Use the 68-95-99.7 rule to find the following quantities: a. percentages of scores less than 100 b. relative frequency of scores less than 120

    asked by terry
  72. Math - Calculus

    What is the domain of this function?: y= ln(2x-12)

    asked by Julia
  73. Biology

    Given colchicine's properties, could this compound be used to treat cancer?

    asked by Mely
  74. Biology

    1. Why are cells from a blastula used to examine mitosis? 2. How fast do you think cells divide when an embryo is developing compared to the normal growth of an animal?

    asked by Mely
  75. college

    a .215kg particle is released from rest at point A in a smooth hemisperical bowl of radius .30m with a height of 2/3R. what is the gravitational potential energy at A relative to B?

    asked by Anonymous
  76. High School Chemistry

    Determine the pH of solutions with the following ion concentrations: 1) {H+} = 1.0x10 to the negative 3 M

    asked by Jesse
  77. CHEMISTRY (WEBWORK)

    SPARTAN: Enter the numerical energy values (X, Y, & Z) on the y-axis and calculate the Ea and G. (Note: This is a multipart problem. First input your values for X, Y, and Z. When you are satisfied with your values submit them and check the box Go on to

    asked by arthur
  78. Biology

    How do the sizes of the oocytes differ as they move from the follicular stage towards the mature graafian follicle?

    asked by Mely
  79. 4th grade

    how do I use sentences comparing Strong, stronger and strongest? what is the difference between those words?

    asked by Vincent
  80. Biology

    How do sperm and eggs differ in size? (consider size and the quatity of each gamete). Explain possible reasons for these differences.

    asked by Mely
  81. UCI Webworks

    Answer the follow using the Energy Profile plot. More than one answer is possible for some questions. What chemical species are present... A. at the longest constraint distance? (Use i, ii, iv, etc. for your answer) B. at the highest energy? (Use i, ii,

    asked by Screwed
  82. Physics

    Vector A has length 4 units and directed to the north. Vector B has length 9 units and is directed to the south. Calculate the magnitude and direction of A+B.

    asked by Glam
  83. Physics

    A package is dropped from a helicopter moving upward at 15 m/s. If it takes 16.0 s before the package strikes the ground, how high above the ground was the package when it was realeased?

    asked by Britney
  84. coding

    when is it correct to assign a fourth -digit category cade

    asked by nirva
  85. CJA/363

    Technology and Communication Paper · Prepare a 1,050- to 1,750-word paper that explains how technology has affected the communication capabilities of specialized databases in the criminal justice system. · Include the following in your paper: o A

    asked by Jamie
  86. physics

    A 300kg motorboat is turned off as it approaches a dock and it coasts in toward the dock at .5 m/s. Isaac, whose mass is 62kg, jumps off the front of the boat with a speed of 3m/s relative to the boat. what is the velocity of the boat after Isaac jumps?

    asked by Anonymous
  87. physics

    superman is said to be able to leap tall buildings in a single bound. how high a building could superman jump over if he were to leave the ground with a speed of 60m/s at an angle of 75 degrees to the horizontal?

    asked by Anonymous
  88. Math12

    Tan^2 30*- cos^2 45*

    asked by Ken
  89. Algebra

    Find logical error a2 = b * b

    asked by JT
  90. Accounting

    It's approaching year-end, and your president has asked you, the management accountant, to visit his office for a heart-to-heart talk. After he closes the door, he tells you that profits for the year will end up below plan and that he's disappointed. He

    asked by Anonymous
  91. Phyical Science

    I have several problems where I have the answer, but I need to know how to work it out. You guys are amazing. Any help would be appreciated. Problem: A series of ocean waves, each 6.0 m from crest to crest and moving past an observer at a rate of 2.0 waves

    asked by Sam
  92. Chemistry

    What is used to tell different isotopes of a particular element apart? A. the mass number B. the atomic number C. the number of protons D. the number of electrons A is the answer. After how many half-lives are there equal amounts of parent and daughter

    asked by Derrick
  93. Physical Science

    If you can help with this problem, I would so appreciate it. If I can understand, I think I can do the rest of them. Here is the problem and the answer. How do I work through to the answer? A certain radio wave has a frequency of 1.03 MHz. What is the

    asked by Sam
  94. Algebra

    explain the logical error Square both sides to get a2 = b2

    asked by JT
  95. geometry

    If AC = 15 centimeters, and BC = 12 centimeters, which does AB equal?

    asked by Anonymous
  96. physics

    Gooluk, the Inuit, is pulling a 62kg sled through the snow on his way home from ice fishing. On the back of the sled is his 50kg sack of fishing tackle. The coefficient of sliding friction between the sled and the snow is .07 and the coefficient of sliding

    asked by Anonymous
  97. math.please help!

    minimize z= 5x + 9y subject to 6x + y >= 18 2x + 3y >= 30 x= 0 find the corner points, ans subject the objective function to the corner points, finding the minimum value of z giving the constraints. i know the first and second points but i couldn't figure

    asked by sha
  98. math

    how do i represent 1/(1+x^4) in general taylor polynomial. I know the pattern is 1-x^4+x^8-x^16..... I don't know how to represent this pattern in variables equation form

    asked by eng
  99. Algebra

    Why are these algebraic expressions used and explain the logical error: Since a = b, then a2 = a * b Subtract b2 from both sides a2 – b2 = a * b – b2 Factor both sides: ( a + b )( a – b ) = b(a – b ) Divide both sides by ( a – b) ( a + b ) = b

    asked by JT
  100. algebra

    Please help me factor this by grouping. I am stuck. 7x^3-35x^2-6x+30

    asked by Joe
  101. Physics

    Explain which would be more useful to you if you needed to locate a buried treasure of the position of the treasure. I'm guessin its the distance, but the position is also very important.

    asked by Anonymous
  102. math.please help!

    set up the linear programming problem. Do not solve. A brewery manufactures three types of beer-lite, regular and dark. Each vat of lite beer requires 6 bags of barley, 1 bag of sugar, and 1 bag of hops. Each vat of regular bear requires 4 bags of barley,

    asked by sha
  103. Physics

    Could you explain to me how it is possible to run a distance of 1.0 km and have zero displacment.

    asked by Anonymous
  104. trig

    Plot the point and then find three representation of the point (3,2pi/3)

    asked by jesse
  105. Chemistry

    The heat of fusion for water is 80cal/g. The specific heat of liquid water is 1.00cal/g. How many calories of heat are released when 20g of water at 30 degrees is cooled to 0 degrees and frozen to ice at 0 degrees?

    asked by Leah
  106. 12th grade - Advanced Functions

    the height, h, in meters, of a gold ball t seconds after is is hit can be modelled by the function: h (t) = 4.9t^2 + 32t + 0.2. When is the height of the ball 15 m?

    asked by Nish
  107. Physics

    How do we determine time interval? We determine time interval by subtracting the final time from the initial time.

    asked by Anonymous
  108. Chemistry

    What is needed for nuclear fusion to occur? pressure, a beta particle or high temperature? I think it's only high temperature and pressure needed.

    asked by Derrick
  109. MATHS

    if a student scores 58 in a maths exam predict the score they would get in science??? Have no idea where to start on this answer other than having a good guess!! Can anyone help please??? Thanks Andrew

    asked by ANDREW
  110. Math

    If it takes 16 faucets 10 hours to fill 8 tubs, how long will it take 12 faucets to fill 9 tubs?

    asked by Pauline
  111. Math

    If the length of a rectangle is increased by 120%, and its width is decreased by 20%, what happens to the area of the rectangle.

    asked by Pauline
  112. 12th grade-Advanced functions

    provide any 2 solutions for the equation y=cot(1/2(theta-pi/2))-5 solutions may be in degrees

    asked by aaron
  113. math

    collect the like terms x-5x

    asked by sally
  114. Finance

    Year Cash Flow 1 $695,000 2 876,250 3 1,057,500 4 1,238,750 5 1,420,000 1. Calculate the IRR and NPV of this project utilizing a 12% discount rate and a 15% cap rate. Ms. Brown was able to secure a loan for $1,540,000, and an equity investor agreed to

    asked by Quentin
  115. PHYSICS

    How do we determine time interval? We determine time interval by subtracting the final time from the initial time.

    asked by Anonymous
  116. Math

    (2m)^4 * (2m)16

    asked by June
  117. 9gr

    Caleb scored the following on his first four tests: 78, 84, 88, and 82. What is the least grade he can receive on his next test to have an average of 85 for the five tests? a.66 b.83 c.93 d.100

    asked by david
  118. 9 gr

    3. Which statement is true about the following set of data? 18, 17, 21, 24, 21 a.The mean is greater than the median. b.The median is less than the mode. c.The mean and median are the same number. d.The median and the mode are the same number.

    asked by ruslan
  119. math

    f(x)=2x-3

    asked by De
  120. 9gr

    An ice cream shop owner recorded these daily sales of ice cream pints at his shop over the last 15 days. (See assignment sheet for stem and leaf plot). How many pints must he sell on day 16, so that the mean number of pints sold is equal to 60? a.53 b.60

    asked by ruslan