Questions Asked on
April 30, 2013

  1. Chemistry II

    Arrange the following 0.10M solutions in order of increasing pH: a. Nacl b. NH4CL C. HCL D. NaCH3CO2 e. KOH

    asked by Liz
  2. english

    Click on the box to choose whether each sentence restates the key idea expressed in the key sentence. Key Idea: When hot weather arrives and the nation takes to the outdoors, mishaps multiply. Drowning is the fourth most frequent cause of accidental death

    asked by Perla
  3. history

    1. For participating countries, NAFTA called for a challenge to U.S. economic leadership. the gradual removal of trade restrictions. the development of a single currency. *a removal of environmental controls.

    asked by Anonymous
  4. algebra

    What happened to Mr. Meter when Mrs. Meter mother flew in for a visit?

    asked by Anonymous
  5. chemistry: please check answers.

    1. How many valence electrons does a carbon atom have? A) 1 B) 2 C) 3 D) 4

    asked by Anonymous
  6. physics

    The figure shows a uniform beam of mass m pivoted at its lower end, with a horizontal spring attached between its top end and a vertical wall. The beam makes an angle è with the horizontal. (a) Find expression for the distance d the spring is stretched

    asked by annetee
  7. 4 grade math

    gina ate 1/6 of an apple pie. Greg ate 1/2 of the same apple pie. how much of the apple pie was left

    asked by marsha
  8. College chemistry

    The pH of blood is 7.4 and that of saliva is 6.4. what is the difference in pH between these two solutions? How much more Hydronium ion (H3O+) is in the saliva than in the blood. I need a detailed answer with the formulas if you can. I have a hard time

    asked by Liz
  9. Physics

    The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 250 J/s. The energy is transferred a distance of 1.7 x 10-3 m through a body whose surface area is 1.8 m2. Assuming that the thermal conductivity is that

    asked by Tim
  10. english

    Choose the correct form of the possessive for the bolded word in the following sentence: "A YEARS worth of hard work has finally paid off.” year years years' *year's Thank You.

    asked by Anonymous
  11. History

    4. U.S. military intervention failed to end a civil war in *Haiti. Somalia. Kosovo. Palestine.

    asked by Anonymous
  12. Math

    A bacterial culture starts with 3000 bacteria and increases to 48,000 after 3 hours, find the doubling time:

    asked by Anonymous
  13. Statistics

    In a sample of 77 widgets, 6 were defective. How many defective widgets would you expect in a sample of 616 widgets?

    asked by Lenore
  14. Statistics

    Use the given data to find the minimum sample size required to estimate a population proportion or percentage. Margin of error: 0.06; confidence level 90% ^p and ^q unknown n= (round up to the nearest integer)

    asked by Rob
  15. physics

    Ultraviolet light is typically divided into three categories. UV-A, with wavelengths between 400 and 320 , has been linked with malignant melanomas. UV-B radiation, which is the primary cause of sunburn and other skin cancers, has wavelengths between 320

    asked by Anonymous
  16. math

    joel walked 2/5 of a mile to the store. 3/10 of a mile to the library,and 1/20 of a mile to the post office. how far did he walk

    asked by Anonymous
  17. Stats

    The probability that a person has blue eyes is 16%. Three unrelated people are selected at random. a. Find the probability that all three have blue eyes: b. Find the probability that none of the three have blue eyes c. Find the probability that one of the

    asked by Dave
  18. Chemistry

    Chloroform (CHCL3) has a normal boiling point of 61 'C and an enthalpy of vaporization of 29.24 kJ/mol. What is the value of delta Gvap (in kJ) at 61'C for chloroform?

    asked by Chloe
  19. Math

    CosA+cosB-cosC=4COSA/2 cosB/2 SINC/2-1

    asked by Hansika
  20. Chemistry

    Use the data from this table of thermodynamic properties to calculate the maximum amount of work that can be obtained from the combustion of 1.00 moles of ethane, CH3CH3(g), at 25 °C and standard conditions. I absolutely have no idea what to do, please

    asked by Dee
  21. eco

    Good X and good Y are substitutes. If the price of good Y increases, then the

    asked by Anonymous
  22. chem

    Chromium(III) chloride(aq) + potassium sulfide(aq) what are the products of this reaction

    asked by sarah
  23. Math

    Find the radius of a right circular cone if its volume is 1.5 times its lateral area and its radius is half its slant height.

    asked by Allison
  24. Math

    Order each set of integers from least to greatest 1.-2,3,0,-1,1 -2,-1,0,1,3 8.3,-3,-2,1,-1 -3,-2,-1,1,3 9.5,-7,-2,1,9 -7,-2,1,5,9 10.-2,1,5,-5,0 -5,-2,0,1,5

    asked by Jerald
  25. History

    4. U.S. military intervention failed to end a civil war in *Haiti. Somalia. Kosovo. Palestine. Thank You.

    asked by Anonymous
  26. Chemistry Help

    How many moles of butane do we need to produce 10 moles of CO2 by reaction with oxygen? I think the balanced equation is 2 C4H10 + 13 O2 -----> 8 CO2 + 10 H2O

    asked by Timofey
  27. geometry

    The medial triangle of a triangle ABC is the triangle whose vertices are located at the midpoints of the sides AB, AC, and BC of triangle ABC. From an arbitrary point O that is not a vertex of triangle ABC, you may take it as a given fact that the location

    asked by denise
  28. Chemistry

    If 20 grams of sulfur reacts with an excess of oxygen, what volume of the product SO2 would be collected at 108.5 kPa and 15 degrees Celseius?

    asked by Christina
  29. Math

    17.Which roller coaster has the greatest lift height Top Thrill Dragster 18.What is the median lift height for the roller coasters lifted? Round to the nearest tenth. Not sure for this one 19.Arrange the given roller coasters from least to greatest lift

    asked by Jerald
  30. physics

    what will the volume of a gas at 309K if its volume at 215K is 3.42 L? Assume the pressure is constant

    asked by frank
  31. Chemistry

    Calculate the solubility of CuSO4 5H2O at 0 C in grams of solute per 100 g water.

    asked by Breanna
  32. 4th grade math

    So far John has run 1/4 of the way to school and walked 3/8 of the way. what fraction of the distance to school does John have left.

    asked by marsha
  33. Chemistry

    I am having trouble with this equation and calculating the enthalpy of formation. 2 NaHCO3 (s) --> Na2CO3 (s) + H2O (g) + CO2 (g) delta H129.2kj I get as far as this step and then I don’t know what to do next. delta H= [1*delta H (Na2CO3) + 1* delta

    asked by Laura
  34. history

    2. President Clinton sent military troops to Bosnia to bring about peace and distribute food during a famine. stop immigrants from coming to the United States. *bomb Serbian strongholds and enforce peace. stop ethnic cleansing of Muslims and Croats. 3.

    asked by Anonymous
  35. math

    you need to make a three dimensional model of a soup can using paper and tape. What 3 dimensional shapes do you need to cut ot make the model?

    asked by jill
  36. Probability & Statistics

    Charmaine is looking at the rental car prices for Get You There Rental Car Company. The cost is based on how many miles you plan to drive the rental car. Use the list of rental prices to answer the questions 1- 5. Miles Cost 200 $80 600 $120 1000 $160 1400

    asked by Annie
  37. Chemistry

    DrBob222, I don't know how to solve this problem either. And yes, this is the question for this problem. I even double check it. Please help. Chloroform (CHCL3) has a normal boiling point of 61 'C and an enthalpy of vaporization of 29.24 kJ/mol. What is

    asked by Chloe
  38. science

    A boy is riding a skateboard. Why does the skateboard have the ability to do work? Answer A. because it can slow down B. because it can change direction C. because the force applied by the rider acts in the same direction as the motion of the skateboard D.

    asked by Anonymous
  39. Calculus

    A woman at point A on the shore of a circular lake with radius 2.5mi wants to arrive at the point C diametrically opposite A on the other side of the lake in the shortest possible time. She can walk at a rate of 3.25 mi/hr and row at a rate of 2 mi/hr.

    asked by Shannon
  40. Business Math

    A Cold Stone Creamery ice cream shop sells sundaes for $3.60 and banana splits for $4.25. The shop sells four times as many sundaes as banana splits. If total sales amounted to $3,730 last weekend, how many banana splits were sold? (Points : 2)

    asked by TM
  41. algebra 2

    I NEED HELP WITH, Of the 52 plays attributed to a play wright,15 are comedies,18 are tragedies,and 19 are histories. if one play is selected at random, find the odds against selecting a comedy.

    asked by bernie
  42. math

    This week Sage spent. 30 for hot dogs and supplies. he earned 18. did he make money are lose money this week?

    asked by asha
  43. Chemistry

    The pK3 of formic acid is 3.75 A)what is the pH of a buffer in which formic acid and sodium formate have equimolar concentration? B)what is the pH of a solution in which the sodium formate is 10M and the formic acid is 1M?

    asked by Liz
  44. geometry

    Prove that if angle DAC is 40 degrees and angle ACD is 35 degrees, then angle BDA is 70 degrees. Write a two column proof showing statements and reasons. My teacher said my answer was wrong because BCA cannot equal 40 degrees because lines DA and C are not

    asked by alexandria
  45. Chemistry

    Calculate the solubility of CuSO4 5H2O at 0 C in grams of solute per 100 g water.

    asked by Breanna
  46. Chemistry

    The balanced equation for the decomposition of sodium bicarbonate is 2 NaHCO3 (s) --> Na2CO3 (s) + H2O (g) + CO2 (g)delta H 129.2. Using the enthalpies of formation, calculate the enthalpy of formation of sodium bicarbonate.

    asked by Laura
  47. Chemistry

    Consider 18.0 M H2SO4, if you need to make 250.0 mL of a 3.0 M solution of H2SO4, how would you do this? 18.0 M H2SO4 has a density of 1.84g/mL what is the molality of solution? Mass % of H2SO4 in the solution and the mol fraction of H2SO4 and water in the

    asked by Marie
  48. Buisness Math

    You are interested in purchasing a wide-screen television set at Target. On this type of TV, the ratio of screen width to screen height is 16 to 9. If a certain model you are considering has a screen width of 48 inches, what is the height of the screen (in

    asked by Kellie
  49. Math

    The temperature was 56 degrees this morning but dropped one degree per hour through the rest of the day. Use the graph you made for the equation for this problem, to approximate the answer to the following question: What temperature was it 15 hours later,

    asked by Desirae
  50. math

    Patrick left home at 4 P.M. on Sunday. He arrived back home 36 hours later. What day and what time was it? I think it is 4 Am on Monday? Is that write or wrong? Please answer and explain.

    asked by Anonymous
  51. Chemistry

    A Cu/Cu^2+concentration cell has a voltage of 0.22v at 25 C. The concentration of Cu^2+ in one of the half cells is 1.5x10^-3 M. What is the concentrate of Cu^2+ in the other half cell? I think I will have to use Nernst equation, but I am so stuck! please

    asked by Amalia
  52. Math

    Movie tickets are $7 for students and $9 for adults. A group of 8 people spent $66 on movie tickets. How many adult tickets were bought?

    asked by Peewee
  53. Eng B

    After having lived with her for a year, Chad studied Marilou's eyes across the table, realizing he had never had a clue about what make her tick." This sentence from a hypothetical nevel suggests voice? A. Third person restricted omniscience B. first

    asked by Jen
  54. Math

    In a golf math Jesse scored 5 over par Neil scored 3 under par, Felipo scored 2 over par and Dawson scored an even par. Order the players from least to greatest score I don't know how to answer this one because I don't know what par is in golf? Is it a

    asked by Jerald
  55. Statistics

    Use the sample data and confidence level to construct the confidence interval estimate of the population proportion p. n=500, x=350, 90% confidence ?

    asked by Rob
  56. Statistics

    A study of 420,048 cell phone users found that 135 of them developed cancer of the brain or nervous system. prior to this study of cell phone use the rate of such cancer was found to be 0.0333% for those not using cell phones. Complete parts (a) and (b) a.

    asked by Rob
  57. Social Studies

    Which colonial region had rich farmlands,,Appalachian Highlands,large harbors and bays,and deep wide rivers?

    asked by Vannesa
  58. Math

    Order each set of integers from greatest to least 13.8,43,-25,12,-14,3 43,12,8,3,-14,-43 14.-8,32,55,-32,-19,-3 55,32,-3,-8,-19,-32 15.-100,-89,-124,-69,-52 -52,-69,-89,-100,-124 16.,6,17,-20,15,-19,26 26,17,15,6,-19,-20

    asked by Jerald
  59. america past and present

    before 1910 the most popular form of entertainment was what?

    asked by ronda
  60. math

    Two rulers are the same length. Ruler A is divided into 357 units while ruler B is divided into 255 units The rulers are placed side by side with the 0 marks lined up and the 375th mark of ruler A aligned with the 255th mark of ruler B. How many total

    asked by Marshall
  61. Calculus

    A rancher wants to make an animal pen by fencing in an area of 2500000 square feet in a rectangular field and then divide it up with 5 fences down the middle parallel to one side. The rancher wants to use the shortest total length of fencing possible. If

    asked by Lucas
  62. Analytic Geometry

    What is the equation of a circle passing through (-4,-4) and tangent to the line 2x-3y+9=0 at (-3,1)?

    asked by John
  63. Physics

    Tapered bar with end load The small tapered bar BC has length L=0.1 m and is made of a homogeneous material with Young’s modulus E=10 GPa. The cross sectional area of the bar is slowly varying between A0=160 mm^2 (at B) and A0/2 (at C), as described by

    asked by helpless
  64. MATHS

    Mrs.Koh purchased new books for the school library, of which 6 were Mathematics books, 7 were Science books, 10 were Music books, 3 were Art books, and 4 were social studies books. All of these books were different. She picked a book from each subject to

    asked by RS
  65. math

    rectangular prism has a volume of 240 ft3. write two possible sets of dimensions for the prism

    asked by sam
  66. science

    a simple pendulum of period T has a metal bob which is negative charged. if it is allowed to oscillate in a vertically upward uniform vertically ellectric feild its period will be

    asked by aditya jain
  67. chemistry, stoichiometry

    Consider the Balanced Chemical Equation 2N2+6H20-->4NH3+3O2 How many moles would be needed to react fully with 0.225 moles of N2?

    asked by Katie
  68. mathematics

    the present age of a father and his son are in the ratio 10:3. if the son is 15 years old now, in how many years will the ratio of their age be 2:1?

    asked by kola
  69. Chemistry

    For a particular reaction at 195.1 °C, ΔG = -1488.09 kJ/mol, and ΔS = 288.67 J/(mol·K).? Calculate ΔG for this reaction at -20.0 °C. delta G = delta H - (T*delta S) -1488.09 kJ/mol = (delta H) - ((461.8K)*(+288.67 J/(mol x K))*(1 kJ/1000 J)) -1488.09

    asked by Dee
  70. science

    Which ore could produce a metal you would like to wear? Why?

    asked by Ryan
  71. Physics

    What is the smallest possible value for the angular momentum L of an electron in the n=5 shell? Lmin= 0 kg*m^2/s What is the largest possible value for the angular momentum L of an electron in the n=5 shell? What is the Lmax? Please help I don't get

    asked by Leila
  72. math

    Pilar picked 12 apples. She gave 1/4 of the apples to Dwayne, 1/4 of the apples to Murphy, and 1/4 of the apples to kelley. How many apples did each of them get?

    asked by Kesha
  73. Statistics

    Assume that a random sample is used to estimate a population proportion p. Find the margin of error E that corresponds to the given statistics and confidence level. 95% confidence the sample size is 2096 of which 25%are successes The margin of E= (round to

    asked by Rob
  74. Geometry

    Lines p and q are parallel and are intersected by transversal r. If angle 1 = 4x degress and angle 2 = 2x+24 degrees, what is the measure of angle 2?

    asked by Joe
  75. chemistry

    Pipette 3 drops of oil into a test tube of water and shake. Describe what takes place and why? - Would it be the oil settles at the top of the water, because the oil is less dense, and its a non-polar substance, so it doesn't mix with a polar substance

    asked by K
  76. science

    A group of wind turbines operates in an open field. Which statement about the wind turbines is true? Answer A. The wind turbines produce movement of air that does work. B. The wind turbines do work by using electricity to produce power. C. The wind

    asked by Anonymous
  77. Math - Intro to Statistics (High School)

    The average square footage in an apartment in a town is 1,800 square feet with a standard deviation of 120 square feet. The square footage is normally distributed. You randomly select 10 apartments in the town. What is the probability that the mean will be

    asked by Group Stat Lab
  78. math

    8. At TelePower Plus, long-distance phone calls to China cost $0.59 for the first minute and $0.25 for each additional minute, plus an additional roaming charge of $2.50. If the total charge of a call to Beijing was $11.84, how many minutes did the call

    asked by cynthia
  79. Math

    1.Melanie, Byron, and Chin are all waiting at the bus stop. Melanie's bus leaves at 10 minutes after noon. Byron's bus leaves at 15 minutes before noon. Chin's bus leaves 5 after noon. Arrange the three according to who leaves the bus stop first. Byron

    asked by Jerald
  80. AP Chemistry

    How many moles of butane do we need to produce 10 moles of CO2 by reaction with oxygen? I think the balanced equation is 2 C4H10 + 13 O2 -----> 8 CO2 + 10 H2O

    asked by Timofey
  81. Eng B

    If an author is skillful at representing the point of view and attitudes of a hobo, an nurse, a corporate CEO, and a variety of other diverse characters, the author is demonstrating A. dramatic irony. B. negative capability. C. first person reporting. D.

    asked by Jen
  82. Chemistry

    For a solution of 3.3 M H2CO3 (Ka = 4.4 × 10-7), calculate: (a) [H+] ____?______M (b) pH _____??______ (c) percent ionization ______?______%

    asked by Brian
  83. life orientation

    suggest 5 recommendation on how to address the environmental problem within your community on floods

    asked by phathutshedzo
  84. Philosophy

    Martin Luther King, “Letter from Birmingham Jail,” draws from the thought of Thomas Aquinas in saying “an unjust law is a human law that is not rooted in eternal and natural law. Any law that uplifts human personality is just. Any law that degrades

    asked by Christopher
  85. Physics

    A person is standing outdoors in the shade where the temperature is 22 °C. (a) What is the radiant energy absorbed per second by his head when it is covered with hair? The surface area of the hair (assumed to be flat) is 180 cm2 and its emissivity is

    asked by Tim
  86. mathematics

    An equilateral triangle with side length 33 is divided into 332 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit

    asked by Sambaran G.
  87. Eng B

    A novel differs from a short story because it A. is more likely to include subplots. B. includes a theme C. is told as a third-person narrative. D. comprised rising action, a climax, and falling action. Answer is "A"

    asked by Jen
  88. accounting

    Easy Move Company made the following expenditures on one of its delivery trucks:Feb. 4.Replaced transmission at a cost of $4,625.May. 6.Paid $1,615 for installation of a hydraulic lift.Sept. 10.Paid $69 to change the oil and air filter.Prepare the journal

    asked by steph
  89. chemistry

    a block of aluminum is placed in 10.0g of water. the initial temperature of the water is 22.0 degrees celcious and its final temperature is 27.0 degrees celcious. what is the amount of heat released by the block of aluminum in calories if it had an initial

    asked by rachel
  90. Maths

    An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit

    asked by MAths lover Please Helppppp
  91. Algebra

    Two investments totaling $19,000 produce an annual income of $1560. One investment yields 9% a year, while the other yields 4% per year. How much is invested at each rate?

    asked by Markevien
  92. eng

    The President sent the ambassador an invitation to the meeting.

    asked by Anonymous
  93. math

    new flat- screen TVs flash even faster than older TVs. Since dogs need a flicker frequency rate of 75, DOGTV works as intended only on newer TVs. One type of new Tv flashes 500 frames each second. How many more frames does it flash than an older TV with a

    asked by osi
  94. HELP!!!MATHS!!!

    A video rental store offers 436 different movies for rent. The movies are categorized as Comedies, Action Movies, and Dramas. A movie may be in more than one of the categories. If 234 movies are categorized as Comedies, 97 as Action Movies, and 191 as

    asked by ianian
  95. biology

    1. The function of the circulatory system is to: A. Deliver oxygen and nutrients to every cell B. facilitate communication between different tissues c. Remove Wastes from tissues d. all of these e.none of these I believe the answer is D all of them

    asked by Christopher
  96. Chemistry

    What should be the number of significant figures in the following calculation? It's an error calculation which is absolute value (True value - experimental value) / true value * 100 so it would be: absolute value [-601.7 - (-587)] / -601.7 * 100 Should the

    asked by James
  97. Math

    A jar contains 1 blue crayon, 1 green crayon, 1 black crayon, and 1 red crayon. You grab 1 crayon without looking. Find the sample space for this experiment.

    asked by George
  98. Agricultural science

    What type of fences can be used?. Draw aa diagram to show the arrangement of poles at coner or where a fence change diirection?.state and explain what records should be kepT for the efficent management of a dairy herd?.

    asked by TLOTLO MANANKE
  99. Probability & Statistics

    Charmaine is looking at the rental car prices for Get You There Rental Car Company. The cost is based on how many miles you plan to drive the rental car. Use the list of rental prices to answer the questions 1- 5. Miles Cost 200 $80 600 $120 1000 $160 1400

    asked by Annie
  100. Math

    Write 1/8 as a decimal

    asked by Anonymous
  101. chemistry

    why do different compounds give different retention factors (Rf values) in thin layer chromatography (TLC)

    asked by jessica
  102. Calculus

    Find the dimension of a rectangle with perimeter 295 whose area is as large as possible

    asked by Allison
  103. Pharmacy math

    Calculate the amount of IV fluid to be added to the volume control chamber Ordered:D5 0.33% NaCl at 66 mL/hr with Fortaz 720 mg every 8 hours to be infused over 40 minutes by volume control set On hand:Fortaz 1g/10 mL

    asked by Sherri
  104. Chemistry

    I just to know how to identify the substance that is reduced, the substance that is oxidized, the oxidizing agent and the reducing agent in each reaction. As (s) + ClO3-(aq) → H3AsO3 (aq) + HClO(aq) CN-(aq) + MnO4-(aq) → CNO-(aq) + MnO2(s) C2H5OH +

    asked by m
  105. Math

    Having trouble figuring out this problem. I'm supposed to write the inequality for this problem. Vijay wans to keep the cost per person of his party under $15. The Party Place charges a flat fee of $250 for an all inclusive party. Let g represent the

    asked by Brandi
  106. Math

    How do you simplify [(3-5)+3✖8]➗4[8-4➗2(7+1)]

    asked by Sig
  107. algebra 1 help

    4-2(X-5)≤4X-1 -2x+10≤4x-1 +2x +2x 4+10≤6x-1 +1 +1 4+11≤6x answer is 15 ≤6x

    asked by yesica
  108. Language Arts

    In poetry,a word or line can have more than one meaning. "I fumble with the task to no avail." What different ways can you interpret this?

    asked by Stephanie
  109. 6th grade grammar please help

    I need a good grade in grammar so please check my answers! Identify the object of the preposition in each of the following sentences. 1. Ashley and her father arrived home from work. a. and b . father c. from d. work 2. Ashley’s bedroom was across the

    asked by Jade
  110. Math

    Explain why the formula for finding the surface area of a rectangular prism is helpful. Sincerly, Your King, the Blaberdybla :)

    asked by King Bla
  111. english

    1. In which sentence do apostrophes serve to indicate both possession and contraction? A. Lady's slippers were under Carol's bed. B. It's Howard's fault. C. I can't say whether it's hers. D. Let's see whom we'll call on next. I think a

    asked by no
  112. chemistry

    Is benzophenone soluble in phosphoric acid?

    asked by Rose
  113. Chemistry

    At 20 degree celsius, Ka for an unknown monoprotic weak acid is 0.00088. Calculate the Delta G (in kJ/mol) for the reaction of this unknown acid with water. HA(aq) + H2O(l) H3O+(aq) + A-(aq)

    asked by Chloe
  114. MAths

    Let r1,r2,r3 be the roots of polynomial P(x)=x^3+3x+1. Evaluate the product 3 ∏ (r^2+r +1) k k k=1

    asked by ianian
  115. Physics

    Composite bar with end load (two segments) The composite bar BCD in the figure is composed of an inner aluminum cylindrical core of length 2L=2 m and radius R=1 cm and a sleeve of steel of length L=1 m and thickness R=1 cm surrounding the aluminum core in

    asked by helpless
  116. algebra 2

    need help with , five hundred raffle tickets are sold for $3.00 each, one prize of $500.00 is to be awarded, Raul purchased one ticket. a)his expected value is b)the fair price of the ticket

    asked by bernie
  117. algebra 2

    I need help with this problem please five hundred raffle tickets are sold for $3.00 each,one prize of 500 is to be awarded, Raul purchased one ticket. a) his expected value? b) the fair price of the ticket?

    asked by bernie
  118. Grammar

    choose the answer that best describes the pronoun's use the sentence. Grandmother has given the African masks to Brendan and me. A. subject B. predicate nominative C. direct object D. object of a preposition

    asked by bubbie
  119. geometry!!!!

    Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in A. What is the maximum value of |A|, which is the number of elements in A?

    asked by roronoa zoro
  120. physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and

    asked by jfchfrhrc
  121. geometry

    Outside of circle Γ, point A is chosen. Tangents AB and AC to Γ are drawn, with B,C on the circumference of Γ. On the extension of AB, D is a point such that B is between A and D, and ∠ADC=25∘. The circumcircle of ADC intersects Γ again at E

    asked by flex
  122. Trigonometry

    I need help: If vector u has a magnitude of 4 meters and a direction of 17 degrees and vector v has a magnitude of 6 meters and a direction of 133 degrees. Find the magnitude of the resultant vector of u + 3v.

    asked by G0al
  123. psychology

    In order to be useful, a test must be reliable. In other words, it must : performance. a. produce the same results from one time to the next b.predict other criteria of the trait being measured c, measure what it is designed to measure d. compare results

    asked by kaye
  124. math

    An eight-inch square cake serves six people.how many twelve-inch square cakes do you need to provide equivalent servings for eighteen people?

    asked by matt
  125. Help please

    Samantha Greene is on the negotiating team for the next teacher's contract. The school board is proposing a 6% increase for each of the next four years. The teachers' counterproposal is 12% this year and 4% for each of the next three years. what is the

    asked by ENIS
  126. life orientation

    Three environmental health hazards that cause ill health

    asked by prince
  127. Geometry

    Find the ratio for the similar figure. If the volume ratio is 27:512, what is the side ratio?

    asked by Anonymous
  128. Physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and

    asked by MAths lover Please Helppppp
  129. grammar

    Is this sentence correct? The show is great but it is much less than expected.

    asked by klarmaesen
  130. business math

    A Cold Stone Creamery ice cream shop sells sundaes for $3.60 and banana splits for $4.25. The shop sells four times as many sundaes as banana splits. If total sales amounted to $3,730 last weekend, how many banana splits were sold? (Points : 2)

    asked by TM
  131. Life orientation

    Describe the life style desease/behaviour and explain 10 factors that contribute to this disease.

    asked by Lindokuhle
  132. Life orientation

    Describe the life style desease/behaviour and explain 10 factors that contribute to this disease.

    asked by Lindokuhle
  133. chemistry

    what is the molal concentration of tin in a solution of 5.000g of tin dissolved in 95.00 g of copper?

    asked by jeanne
  134. Math

    a 2-month note for $4,500 was drawn on July 3 at 8%. If money is worth 9%, find the present value of the note on the day it was made.

    asked by Alice
  135. Math Probability

    Super stumped... Help please. The average distance geese fly south in the winter is approximately 380 miles with a standard deviation of 60 miles. Assuming that the distances are normally distributed, find the probability that a randomly selected goose

    asked by Patricia Marzetta
  136. Algebra

    Find the horizontal and oblique asymptotes, if any, for the given rational function G(x)=(x^4-1)/(3x^2-3x)

    asked by lynn
  137. Grammar

    does this sentence contain an unclear antecedent? In the encyclopedia, it says that English has words from many different languages.

    asked by bubbie
  138. math

    not sure how to solve this problem, Mrs. Smith put $5,000 into a certificate of deposit at the bank that paid 6% interest per year. if the bank paid simple interest on this money, how much would Mrs. Smith earn in a year

    asked by sandra
  139. accounting

    The forecast overhead for the current year will be $11,279,512 and that total machine hours will be 160,228 hours. The actual overhead is $7,919,409 and the actual machine hours are 90,509 hours. If the Thomlin Company uses a predetermined overhead rate

    asked by linda
  140. art history

    What is the Etruscan influence on Roman, Byzantine and Romanesque visual culture?

    asked by kate
  141. LIFE ORIENTATION

    describe the lifestyle disease/behavour and explain 5 factor that contribute to the HIV/AIDS DISEASES

    asked by FACTORS
  142. Math

    List all potential rational zeros of 9x^3+6x^2-29x-10

    asked by Ashley
  143. Math

    3/8 divided by 12

    asked by Shira
  144. Statistics

    Use the given data to find the minimum sample size required to estimate a population proportion or percentage. Margin of error: five percentage points; confidence level 90% from a prior study, ^p is estimated by the decimal equivalent 56% n= (Round up to

    asked by Rob
  145. Chemistry

    The following thermodynamic data was obtained for an unknown compound. Delta Hvap = 31.3 kj/mol and Delta S Vap= 79.7 kj/mol .Calculate the normal boiling point of this compound in Celcius.. Thank you! Chemistry - DrBob222, Tuesday, April 30, 2013 at

    asked by Chloe
  146. Geometry

    Find the ratio for the similar figure. If the area ratio is 4:49, what is the volume ratio?

    asked by Anonymous
  147. geometry and combinatorics

    An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit

    asked by sanji
  148. Math

    There are 5 staircases going from thr first to the second floor in school. Find the total number of ways that Andrea can go from the first floor to the second and then return to the first. Thank you

    asked by Kiki
  149. Pharmacy Math

    Calculate amount of IV fluid to be added to the volume control chamber. Ordered:D5W at 30 mL/hr for continuous infusion with medication x 60 mg every 6 hours to be infused over 20 minutes by volume control set On hand:Medication x 60 mg/2 ml The book says

    asked by Sherri
  150. Physics Need help plz

    An 1900 kg car is traveling with a speed of (22 +- .22) m/s. With what maximum accuracy can its position be determined? delta x= in meters Can someone please help me out I am lost on this on...Thank you

    asked by Leila
  151. mathematics

    Let A be a subset of T={1,2,…,100} subject to the condition that if 2 distinct elements a and b are in A, then a+b is not in A. What is the maximum value of |A|, which is the number of elements in A?

    asked by Mathsfreak
  152. chemistry

    A gas is stored in a 3.5L container at 15 degrees celsius and 655mmHg. Calculate the number of moles of the gas in the container

    asked by Anonymous
  153. Chemistry

    1. Chemists define pH as "the negative logarithm of the concentration of protons". In mathematical terms: pH = - log [H+] What is the pH of a solution whose [H+] is 0.0007 M? i got it as 7.0 i know it is wrong 2. What is the [H+] in a solution having a pOH

    asked by Lynn
  154. Integer

    Is -32 or -27 greater than -24? I say, -32. Right?

    asked by Moby
  155. Math

    Tenencia is thinking of a number with 8 place values.The digit in The thousand place is 5.The digits in The hundred thousands and hundreds place are both an odd number greater than 7. The digit in each other place value is one less than The digit in The

    asked by Gaby
  156. Math

    Find the sum of all integers c, such that for some integers a and b satisfying a

    asked by Pete
  157. Math

    A national study reports that 20% of college freshman have GPA above 3.5. We wish to determine if the corresponding proportion is higher at a local university. To conduct the test we select a random sample of 100 freshmen and determine that 26 of them have

    asked by Kathy
  158. Microbiology

    How can I isolate & identify a bacterial infection acquired on another planet that is unknown to me?

    asked by Stephanie
  159. finnce

    Jamal currently earns $20,000 a year in gross wages. On January 1, he is due to receive a 2% COLA. What will his gross income be after the COLA takes effect

    asked by Anonymous
  160. Math

    a square is 4 units on each side. Two of the corners of the square are at points by (-1, 2) and (3,-2). Name the ordered pairs for the other two corners

    asked by Anonymous
  161. life orientation

    Ways in which one can take responsibility to provide safe and healthy living environment?

    asked by tay
  162. Math (Geometry)

    ABCD is a rectangle with AC=20 and AB=2BC. What is the area of rectangle ABCD?

    asked by Arnau
  163. Physics

    Two runners have a race. The first runner decides to run with his full speed v₁=9 m/s over the 250 meters of the race and then slows to v₂=7 m/s for the rest, since he's tired. The second runner wants to save energy, so he runs with v₃=8 m/s for the

    asked by Arnau
  164. Maths

    AB is a 12 metre flagpole on top of a building. Given angle QPB=56 degree 37' and angle QPA=43 degree 19',find the distance of PB.

    asked by Shane
  165. American Government

    Proportional representation systems like those in Western Europe encourage the formation of smaller parties by enabling parties to: A. win legislative seats even though they do not receive a majority of votes in elections. B. receive campaign funds from

    asked by joe
  166. math

    What is 400=y+260

    asked by lol
  167. .MATH.

    If about 3000 of every recall model of a vehicle actually need rework, what is the probability that your (recalled) car will not need a rework if there are 120000 cars of that model sold, and if 1000 of them are already off the road (this is a monkey

    asked by Alice
  168. Maths

    What is the sum of all possible real values of x that satisfies the equation 25[x(log5 x)]=x^3.

    asked by ianian
  169. grammar

    When are you going to use "much less than" when comparing?

    asked by klarmaesen
  170. Science

    gravitational forces are be acted on a space center what other data need to show the forces a-direction of the opposite force b-magnitute of the downward force graviatational forrces are being acted on a space station i think what other of the two data are

    asked by hh
  171. Biology

    1. Bone is formed from the deposition of __________ into connective tissue A. Calcium and Phosphate B.Sodium and potassium C. potassium and calcium D. Sodium and Phosphate E Actin and myosin 2. The major disadvantage of exoskeletons is A. Animal outgrows

    asked by Christopher
  172. Grammar

    1.Painting the door in the storage area were Lizzie and ______ A.she B.her C.them D.me i think it's A but i'm not sure. :(

    asked by bubbie
  173. Histroy

    If you were a reform-minded person who,above all,loathed the social promblems associated with alcohol you would have been especially sympathetic to the

    asked by Tina Boswell
  174. Biology

    Which of these systems is involved in connecting one body system with another? A. Integumentary B.Muscular C. Immune D. Digestive E. Endocrine I think its E

    asked by Christopher
  175. chemistry

    can you convert the grams to liters of water using the conversion factor of 22.4 liters in one mole?

    asked by lauren
  176. 3rd grade math

    draw a box that has 3 valumes of 12 cubic units in 3 different ways

    asked by nikki
  177. MAths

    What is the sum of all possible real values of x that satisfies the equation x x^log5 =x^3/25.

    asked by ianian
  178. skills for success

    Jenny has a part time job and her net take-home income is $2000 per month. She needs to allocate her funds to reflect a balanced monthly budget. Jenny's main categories of expenses include rent, utilities, and groceries.

    asked by Anonymous
  179. 1001040 M/J LANG ARTS 2 - T2 Unit 2: Is Progress

    What is the main reason to consider thinning forests?

    asked by Anonymous
  180. chemistry

    What is the final pressure gas sample that is subjected to a temperature change from 22.0 C to 30.0 C and a volume change from 85.4 L to 37.0 L with an initial pressure 105 kPa?

    asked by SK
  181. Chemistry 1

    if 0.500mol of argon gas occupies 2.10L at 735mmHg, what is the temperature if degrees Celsius

    asked by Me
  182. 4th grade math

    Thank you every much. Have a great night.

    asked by marsha
  183. math

    of the pupils in a class, 12 like both pizza and chicken, 19 like pizza and 3 like neither pizza nor chicken, how many like chicken?

    asked by janae
  184. Apollo 13!! HELP

    i need an outline for the reaserch we are doing in class called, "Apollo 13? HELP!!

    asked by Somer
  185. Maths

    We are given that log10 2

    asked by MAths lover Please Helppppp
  186. chemistry

    if 500 g of mgcl2 are produced in the above reaction how many l of h2 are produced

    asked by Haley
  187. algebra 2

    need help with The Chin's family room measures 24 ft by 30 ft. they are covering a floor with square tiles that measure 1 foot on a side and cost $0.73 how much will they spend on tile?

    asked by bernie
  188. math

    A quasi-scientific study was done to find some link to autism. In the study, it was found that children who had an autistic tendency were delivered after an average of about 30 hour labor. They all weighed an average of 10 pounds. The study was done in a

    asked by Michael
  189. Math

    Cepheid variables are vital for measuring the distances of relatively nearby galaxies. What is the probability of finding a cepheid variable star? State ALL your assumptions

    asked by Karla
  190. math

    is the formula "y=x to the 7th power" an example of a proportional relationship?

    asked by laurie
  191. Math

    A piece of land 1.2 km by 3.6 km is for sale at $1500 per hectare. What is the price of the land?

    asked by Shanana
  192. chemistry

    A gas is stored in a 3.5L container at 15 degrees celsius and 655mmHg. Calculate the number of moles of the gas in the container

    asked by Anonymous
  193. Biology Raynaud's Disease

    Hey im doing a powerpoint presentation on this raynaud's disease, and could someone please give me some good sites to go through to get info abt this and please mention anything you know about the raynaud's disease as well, thanks.

    asked by Shreya
  194. books

    In the book In the Garden of Beasts, Chapter 18, it asks, At this point in Hitler’s rise to power no military action was taken to halt his ascension. What would have been the most likely outcome of preemptive military action?

    asked by lizzy
  195. Java

    Write a method that will take in a String parameter and return true if the first 2 chars in the string also appear at the end of the string, such as with the word "edited", which starts and ends with 'e' and 'd'.

    asked by Aɴᴏɴʏᴍᴏᴜs
  196. Math

    Write < or > to make a true sentence 1.18 23 < 2.-9 -1 < 3.-3 -5 > 4.8 -2 > 5.6 -3 > 6.0 8 < 7.6 -7 > 8.-23 -16

    asked by Jerald
  197. 7th Grade Math

    If a diameter of a circle (which is 18 inches) is tripled, can the expression 9 (254.34 in square) be used to find the new circle? I know the answer is yes but I can't figure out how you work it! I come with 9(1,107.36 in square) but apparently that is not

    asked by Daniel
  198. math

    what is the value of the expression 2b + 4 when b=1/2

    asked by kamya
  199. Math

    The area of a rectangular garden is 110 square meters. The width is 6 meters loner than one-half of the length. Find the length and the width using area=lengthxwidth

    asked by Amber
  200. Precalc

    For #1-3, an angle of rotation and ( x prime, y prime) coordinates are given. find the (x,y) coordinates? 1. angle= 30 degress, ( root 3, 2) 2. angle= 60 degrees, (-1,1) 3. angle = 45 degrees, ( root 2, - root2)

    asked by Rebekah
  201. business math

    Translate the following statement into an equation: A number (X) decreased by 4 is 25. (Points : 2)

    asked by TM
  202. spanish

    how do you find the direct object in a sentcens?

    asked by Anonymous
  203. math

    he purchased a total of 120 shares at a price of 3018 what was the unit price per share (4.2d)

    asked by elizabeth
  204. ged

    Tuan rode in a 40m mile bike race what fraction of the race had tuan ridden when completed 25 miles?

    asked by clarence
  205. algebra 1 help

    -3(2x-5)=7-4(x-6) -6x+15= -4x+24 +4x +4x _____ ______ -2+15= 7+24 what am i doing wrong? is it the 7

    asked by yesica
  206. Pre-Calculus

    Find the inverse function for the function f(x)=2^(x)+1/2^(x)-1 You will need to use some properties of logarithmic functions to find the inverse of this particular function.

    asked by Thomas
  207. chemistry

    which of these would have the highest melting point due to the trong intermolecular forces, CH2 NH2 H2 CO2?

    asked by jay
  208. English

    I have to write an analysis of Arthur Millers involvement in the Movie and in the Play of the Crucible. How is Millers involvement in the Movie? I can not find any examples. Thanks

    asked by Jessica
  209. Agricultural science

    Outline and explain the objectives of fencing a farmland

    asked by TLOTLO MANANKE
  210. life orientation

    5 ways in which the human or environmental problem impact on the community

    asked by nqo
  211. Interger confusion

    What explains how to model -5+ 3 on a number line? Is it start at zero tehn move left five times then right three times to end at -2 ?

    asked by Moby
  212. Math

    Solve for X: 2x+5 x-6 2 = 2

    asked by Anonymous
  213. maths

    If the expression (x^2+2x−1)^8 is completely expanded, what is the sum of the coefficients of the terms with even powers of x? Details and assumptions 0 is an even number.

    asked by ianian
  214. science

    what 2 forces act on a person jumping on a trampoline a-lift and tension b-tension and gravity c-friction and drag d-compression and friction right answr b

    asked by hh
  215. chemistry university

    In this experiment you will be placing solid CO2 into a 10 ml tube. The tubes are not completely gas-tight, but what if they were? What would be the pressure inside the tube in atm, after all the dry ice had vapourised, if 3.72 g of solid CO2 was

    asked by angela
  216. life orientation

    Provide 5 ways in which you critically discuss how lifestyle diseasesimpact on the teenager 3 May 2013 please help

    asked by samkelisiwe
  217. Financial Accounting

    Use the following information to answer multiple-choice questions 5 and 6. At the end of the year, before any adjustments are made, the accounting records for Sutton Company show a balance of $100,000 in accounts receivable. The allowance for uncollectible

    asked by Anonymous
  218. physics

    A ball of volume V=8 L is full of air with pressure higher than atmospheric pressure by Δp=2×10^4 Pa. The total mass of the ball and the air inside is 200 g. The ball is tossed up to a height h=20 m, then it falls down, collides with the ground, and

    asked by jfchfrhrc
  219. English

    This is my sentence... When a single subject is being connected to a plural subject using “or” then the verb is plural. Would you put a comma inside the quotes of the word "or" or outside? Thanks!

    asked by Serena
  220. math

    Influential observation and Outliers: Are we just splitting hair? If so, explain. If not, how then do you differentiate between an influential observation and an outlier.

    asked by Steve
  221. math

    How do I find 8/3 of 48?

    asked by Celest
  222. books

    In the book "In the Garden of Beasts", chapter 16 it asks What did Klemperer notice about Hitler’s use of language? What was the purpose of the Editorial Law?

    asked by lizzy
  223. acollege algebra

    If f(x)=2(x-3)^2-5 find the vertex, the x intercepts the y intercepts sketch the graph, choose two points on the graph and find the rate of change

    asked by smc
  224. books

    I'm sorry to ask again but the answer has to come from Chapter 18 of the book "In the Garden on Beasts" And the question is At this point in Hitler’s rise to power no military action was taken to halt his ascension. What would have been the most likely

    asked by lizzy
  225. Algebra II

    Find the inverse funciton: g(x) = 3x^4, x > 0

    asked by Piggy
  226. limits

    evaluate the limit as x approaches 0 (1/x/-1/sins)

    asked by sol
  227. maths

    Three roots of f(x)=x^4−2x^3+ax^2+bx+c are −5, −3 and 4. What is the value of a+b+c?

    asked by ianian
  228. Math (Algebra)

    How many ordered pairs of integers (x,y) are there that satisfy |x|+|y| ≤ 10?

    asked by Arnau
  229. science

    gravitational forces are be acted on a space center what other data need to show the forces a-direction of the opposite force b-magnitute of the downward force rigth answer: b

    asked by hh
  230. life orientation

    Provide five ways in which you critically discuss how life style disease impact on teenagers?

    asked by xolani
  231. Math

    Arrange these letters trngiee

    asked by Jerald
  232. Calculus I

    Find the volume V of the solid obtained by rotating the region bounded by the given curves about the specified line. y=7x^5 y=7x, x is greater than or equal to 0

    asked by Anonymous
  233. math

    not sure how to solve this problem, Mrs. Smith put $5,000 into a certificate of deposit at the bank that paid 6% interest per year. if the bank paid simple interest on this money, how much would Mrs. Smith earn in a year

    asked by sandra
  234. science

    why could dna be classified as a polymer A-has a chemical structure similar to salt crystals b-made of repeating pattern of smaller molecules c-a solid found in all living matter right answer b

    asked by hh
  235. grade 12 chemistry

    explain the concept of a “stock solution” and standard solutions as if you were explaining it to a friend who is not studying chemistry.

    asked by michael
  236. Maths

    We are given that log102

    asked by MAths lover Please Helppppp
  237. Math

    Put < or > to make a true statement 1.-2 0 < 2.3 -3 > 3.-9 8 < 4.-8 -3 < 5.11 3 > 6.-2 10

    asked by Jerald
  238. math theory

    write a rational and irrational number between 1.12301 and 1.1230101.

    asked by jacqueline
  239. math

    what is 9/2 - 1/2

    asked by Alex
  240. math solve for w

    (w+9)*4=27+4

    asked by Sykuta
  241. math

    what is 9/2 - 1/2

    asked by Alex