Questions Asked on
May 6, 2010

  1. college physics

    If the amplitude of a sound wave is tripled, A.) by what factor will the intensity increase? B.) by how many dB will the sound level increase?

    asked by A
  2. physics

    A cylinder of compressed Oxygen is carried on a spacecraft headed for Mars. The compressed gas cylinder has a volume of 10,000 L and is filled to a pressure of 200 atm at 273 K. The maximum pressure the cylinder can hold is 1000 atm. The molar mass of

    asked by richard
  3. college physics

    A 215 g sample of a substance is heated to 330 degrees C and then plunged into a 105 g aluminum calorimeter cup containing 165 g of water and a 17 g glass thermometer at 12.5 degrees C. The final temp is 35.0 degrees C. What is the specific heat of the

    asked by E
  4. physics

    A 0.0150-m wire oriented horizontally between the poles of an electromagnet carries a direct current of 9.5 A. The angle between the direction of the current and that of the magnetic field is 25.0° as shown. If the magnetic field strength is 0.845 T, what

    asked by lakhvir
  5. chemistry

    when aqueous solutions of copper II nitrate and sodium phosphate are mixed, sodium nitrate and copper II phosphate are formed. In the balanced chemical equation what is the coefficient of sodium nitrate?

    asked by grace
  6. math

    the practice range at a golf course charges $4.00 for a bucket of 40 golf balls.At this rate,how much will a bucket of 100 golf balls cost?

    asked by brea
  7. Algebra 2 with trigonometry

    A baseball diamond is a square 90 feet on a side. The pitcher's mound is 60.5 feet from home. How far does the pitcher have to run to cover first? (we are using the LAW OF SINES AND COSINES)

    asked by T
  8. Economics

    Consider a profit maximizing competitive firm with the following production function: y=L^α+K^β where 0

    asked by Anonymous
  9. math 2nd grade

    Need to find the rule for the following letters: AEFHIKLMN BCDGJOP

    asked by Tara
  10. Calculus

    A 10 foot ladder leans against a 20 foot wall. Someone begins pushing the base of the ladder toward the wall at the rate of one foot per second. How quickly is the top of the ladder moving up the wall after 2 seconds?

    asked by Julia
  11. Chemistry; Stoichiometry

    Consider the reaction 2Al + 3CuSO4 = Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess CuSO4? 1. 70.6 g 2. 57.2 g 3. 129 g 4. 31.4 g Consider the reaction 4As + 3O2 =

    asked by Annalie
  12. chemistry

    What is the IUPAC name of the following compounds? a) ---CHO ---I CH3CCH3 ---I ---CH2CH3 b) -----------CH3 -----------I CH3CHCH2CH2CHCH2CH3 ---I ---CH2CH3

    asked by long
  13. math

    a pharmacist mixed some 10% saline solution with some 15% saline solution to obtain 100ml of a 12%saline solution.How much of 10% saline solution did the pharmist use in the mixture.dO NOT UNDERSTAND TO MUCH INFO.

    asked by Anonymous
  14. Chemistry

    Find the molar solubility of silver sulfide Ag2S. Ksp is 6.0 x 10^-51. I get 1.1 x 106-17. Right?

    asked by Jim
  15. Chemistry

    Consider the reaction 2Al + 3CuSO4 = Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess CuSO4? 1. 70.6 g 2. 57.2 g 3. 129 g 4. 31.4 g I don't understand how to set it

    asked by Annalie
  16. 4th grade

    how do you find equivelent fractions

    asked by danashia
  17. Vectors

    Adam can swin at a rate of 2km/h in still water. At what angle to the bank of a river must he head if he wants to swim directly across the rivver and the current in the river moves at the rate of 1 km/h?

    asked by Meg
  18. spanish

    how do you say please revise all the verb tenses

    asked by Arleen
  19. math

    A golf ball is hit off the ground at an angle of pie/6 and it travels 400 ft. How long was the golf ball in the air?

    asked by Nancy
  20. Physics hard... can't get it right

    A cylinder of compressed Oxygen is carried on a spacecraft headed for Mars. The compressed gas cylinder has a volume of 10,000 L and is filled to a pressure of 200 atm at 273 K. The maximum pressure the cylinder can hold is 1000 atm. The molar mass of

    asked by richard
  21. history

    what problems did Nigeria encounter after oil was discovered there?

    asked by dalton
  22. algebra

    Simplify the expression: 1/2*(square root of 112) Ex: 90^1/2= 10^1/2 * 9^1/2 Answer: 3(10^1/2)

    asked by Jeet
  23. Precal nightmare

    Show that: sec (A-B)= (cos(A+B))/(cos^2 A-Sin^2 B)

    asked by krista
  24. chemistery

    alculate the molar solubility of Ca(OH)2 at 50 Celsius. it is not the average of the 0 Celsius and 100 Celsius solubilities; why not?

    asked by elia
  25. College Physics

    A 50 dB sound wave strikes an eardrum whose area is 5.0 x 10^-5 m^2. A.)How much energy is absorbed by the eardrum per second? B.) At this rate, how long would it take your eardrum to receive a total energy of 1.0 Joule?

    asked by L
  26. distillation

    what is the purpose of adding packing material to the distillation column? what is the purpose of insulating the distillation column?

    asked by rachel
  27. 7th grade

    six coins are dropped on the floor. find the probability that they will all land heads up.

    asked by kevin
  28. algebra

    How do I simplift algebraic equatuions like this one: 6x*3/9-1. Thanks(:

    asked by Cassie
  29. financial Matters

    I need help in understanding this question given by my instructor. I have posted this question to her, three days ago and not getting any response. Please help!! What is meant by short-term bank notes and how does it apply for permanent financing at

    asked by Wanda
  30. Chemistry

    What is the molar hydronium ion concentration in solutions with pH values of a) 3.45 and b) 10.290. How do you work these problems?

    asked by Melody
  31. poetry

    Can u please explain to me the poem On the wire by Robert service in detail?

    asked by katie
  32. Chemistry Lab

    Provide the correct coefficients to balance the following equation: ___ Fe(NH4)2(SO4)2·6H2O + ___ H2C2O4 + ___ K2C2O4 + ___ H2O2 -----> ___ K2Fe(C2O4)3·3H2O + ___ (NH4)2SO4 + ___ H2SO4 + ___ H2O I'm usually okay when it comes to balancing equations but

    asked by anonymous
  33. Math

    Hello ma’am sir.. I have a problem in my assignment.. I‘m now a college student…a first year student…this is my question..please help me.. I really need it now… 1. The diameter of the earth is 7920 miles, and that of the moon is 2160 miles.

    asked by Mr. J
  34. Chemistry

    Hi I need help with sig figs with this problem (0.6216+0.0871)/(0.0740+0.0335)

    asked by Anonymous
  35. Economic

    The federal budget deficit is gone, transformed by a strong economy into a string of projected surpluses that should grow larger for years to come.... Eliminating the deficit is hardly the end of the government’s financial troubles, however.... [T]he

    asked by Candace
  36. Physics hard...

    Young's Modulus (Y) 20 X 1010 N/m2 Shear Modulus (S) 8.1 X 1010 N/m2 Bulk Modulus (B) 16 X 1010 N/m2 The table to the above represents various properties of steel. You have steel wire 4.9 meters in length that stretches 0.16 cm when subjected to a force of

    asked by richard
  37. science

    i am doing a project on skateboards and how are they made, but i have to write a research paper and i need help i need somebody to write one for me

    asked by quanise
  38. accounting

    Joe operates a business that locates and purchases specialized assets for clients, among other activities. Joe uses the accrual method of accounting but he doesn’t keep any significant inventories of the specialized assets that he sells. Joe reported the

    asked by Ramona
  39. accounting

    Assuming Alexa receives $20,000 in gross rental receipts, answer the following questions: a. What effect does the rental activity have on her AGI for the year? b. Assuming that Alexa’s AGI from other sources is $90,000, what effect does the rental

    asked by Ramona
  40. business

    . Theory and origin of the separation of powers II. The division of powers among the branches of government A. The executive branch B. The legislative branch III. The separation of church and state IV. The judicial branch V. Current ideas about the

    asked by Anonymous
  41. business

    . Theory and origin of the separation of powers II. The division of powers among the branches of government A. The executive branch B. The legislative branch III. The separation of church and state IV. The judicial branch V. Current ideas about the

    asked by lt
  42. Economic

    We’ll cut your taxes” is the most repeated campaign promise in the history of American politics. Yet somehow it is still considered visionary, worth a fight. Worth, indeed, a crusade. Why? It’s in our blood. Historically, Americans have hated taxes,

    asked by Candace
  43. Finance

    Aunt Sally's Food Inc. is considering expansion. Sally has paid $100,000 for a marketing study to assist in the potential valuation. The study indicates that the new product will have sales of $1,500,000 per year each year for the next 6 years. However,

    asked by Marie
  44. College Finance

    Aunt Sally's Food Inc. is considering expansion. Sally has paid $100,000 for a marketing study to assist in the potential valuation. The study indicates that the new product will have sales of $1,500,000 per year each year for the next 6 years. However,

    asked by Marie
  45. Chemistry

    The hydrogen in an eudiometer has a volume of 80 ml when the pressure is 740 mm. what's its volume at standard pressure?

    asked by Kevin
  46. Integrated Chem/Phys

    If the density of a 225g stuffed plush toy is 1.25g/cm^3 and the water volume in a glass is 25 ml, find the new level of water after the toy is pushed under water. I know that D=m/v so 1.25=225/v so 1.25/225=v so I got .005 which cannot possibly be right.

    asked by Jordan
  47. English (Macbeth)

    I'm looking to simply answer these questions on Macbeth. Problem is, I really honestly don't understand the entire book. 1. Explain the significance of the pre-murder sililoquy which beings, "Is this a dagger I see before me "(II.i.30)? 2. Provide a

    asked by Anonymous
  48. chemistry

    which reactant in the reaction of sodium carbonate and calcium chloride dihydrate is the limiting reactant if 1.00 gram of each reagent is used? a. sodium carbonate b. calcium chloride dihydrate

    asked by grace
  49. childcare

    I need examples, how I can do, a lesson plan about regarding diversity that I would like to teach children. I should do a plan one long activity or several shorter ones for single lesson.And be specific about how you will assess what the children are able

    asked by Rosa
  50. chemistry

    Why is it necessary to wait until the filter paper containing a compound is completely dry before weighing it? and how would it effect the theoretical yield? HIgher?? lower??

    asked by grace
  51. algebra

    Two cars leave town at the same time going in opposite direactions.One travels 44 mi/h and the other 55 mi/h. In how many hours will they be 297 miles apart?

    asked by Darez
  52. statistics

    5. A teacher wishes to compare two different groups of students with respect to their mean time to complete a standardized test. The time required is determined for each group. The data summary is given below. Test the claim at = 0.10, that there is no

    asked by Ima
  53. Economic

    The federal budget deficit is gone, transformed by a strong economy into a string of projected surpluses that should grow larger for years to come.... Eliminating the deficit is hardly the end of the government’s financial troubles, however.... [T]he

    asked by Candace
  54. Math

    Could someone please explain this problem to me? I will show you what I have so far. Perform the indicated operations and simplify. w-2/w-7-w+1/w+7+w-77/w^2-49 I made it to this step and now I can't figure out what to do next. w^2+w-14/(w+7)(w-7) +

    asked by B.B.
  55. math HELP

    why don't u want to join

    asked by dylan
  56. childcare

    I have decided preschooler level , but I don't know how to start it. "regarding diversity" I need examples. Thank you

    asked by Rosa
  57. Chemistry

    Is 50.0 mL of 1.0 M HF and 25.0 mL of 1.0 M NaOH a buffer with an approximate pH of 3? I say yes. Right?

    asked by Jim
  58. Chemistry

    Sorry I nee to add something. The Ka for HF = 1 x 10^-3. Is 50.0 mL of 1.0 M HF and 25.0 mL of 1.0 M NaOH a buffer with an approximate pH of 3? I say yes. Right?

    asked by Jim
  59. physics

    Which is true as one gets closer to the center of the earth? a. The person’s weight increases b. The person’s weight decreases c. The person’s weight remains the same d. The person’s mass changes e. A new dimension is discovered

    asked by jude
  60. chemistry

    hydrogen and oxygen gas combine explosively to produce water. write a blanced equation for this process. if 10 mol of hydrogen reacted with oxygen, what volume of liquid water could be produced?

    asked by Sammy
  61. World Literature and Language

    How do the villagers respond to the spider girl? What do you think their response symbolizes -- how does it relate to the rest of the story?

    asked by Nikki
  62. Chemistry

    I really don't know how to approach this problem and I really need help. Using the average molarity of your initial acetic acid solutions, the initial volumes, and the volume of NaOH added to reach the equivalence point, calculate the [C2H3O2-]

    asked by Megan
  63. 5th grade

    WHAT IS THE GCF OF 32 AND 48

    asked by BIB
  64. physics

    Why is 9.8 used as g on Earth but nowhere else in the solar system? Explain.

    asked by kasey
  65. Biology Research Paper

    I need help writing a conclusion for my research paper..please help! I need to finish this ASAP. Thanks We find it mixed in our food on the shelves in the supermarket and growing in a plot down the lane. It is variously known as genetic engineering, which

    asked by mysterychicken
  66. Algebra

    13. Find the domain of y=2x+1 Bobpursley said: The domain of x is not restricted by that equation. Does that mean the domain is all real numbers?

    asked by y912f
  67. geography

    the ____protected nepal and bhutan from outside influences until 1900's

    asked by judy
  68. geography

    what are two facts about Aswan High Dam and its impact on the area and two o pinions about that would most likely be shared by some residence of the area?

    asked by katya
  69. physics

    A satellite orbits the Earth with a fixed radius, what happens to the satellite if the speed is decreased to zero?

    asked by Ashley
  70. Two Loudspeakers in a open field Pjysics

    Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. If you are 3.00m from speaker A directly to your right

    asked by Mikhail Moskvich
  71. physics

    A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface

    asked by Ariel
  72. chemistry

    how to balance this equation? (NH4)2Cr2O7 ---- Cr2O3 + N2 + H2O plz tell step by step.i m a beginner

    asked by abdullah
  73. reply to Q " Physics hard... can't get it right"

    kk this is what i did V=strt(3*k=8.31*T=1365)/m=5.32*10^-26

    asked by richard
  74. physics

    A 100kg mass starts from rest at the top of an incline plane that makes an angle of 35 degrees with the horizontal, the coefficient of friction of 0.005 between the ramp and the mass. The mass slides down the ramp and then slides to a stop on a surface

    asked by Ariel
  75. Algebra

    Can you please show me the steps on how to do this, and what the answer would be? 87. Solve the equation: v-4/5=3/8 THanks

    asked by y912f
  76. Algebra

    23. The ___ axis represents the independent variable. X? 21. Name the set(s) of numbers to which 1.68 belongs. a. rational numbers b. natural numbers, whole numbers, integers, rational numbers c. rational numbers, irrational numbers d. none of the above

    asked by y912f
  77. math

    surface area formula for room measurements 23ft 6in length, width 14ft 8in and height 30 feet

    asked by sandra
  78. algebra

    How would I make v the subject of the following equation? 5v=3(v+r)

    asked by Nathan
  79. chemistry

    find the molarity of 35.8 g of HCl in 2.5 L of water???? what is the answer

    asked by Alexis
  80. chemistry

    17.9 moles of NaOH in 500 ml of water? please tell me the answer

    asked by Alexis
  81. chemistry

    find the molarity of 0.087 f of H2SO4 in 3.4 L of water? what is the answer

    asked by Alexis
  82. Chemistry

    Add 0.40 g of NaOH to 50.0 mL of 0.10 M HCOOH, and find approximate pH. No volume change, Ka HCOOH=1.8x10^-4. I recomputed this and I get pH 5. Right?

    asked by Jim
  83. chemistry

    find the molarity of 9.0*10 (to the -4 power) moles of Mg(OH)2 in 1500 ml of water. what is the answer?

    asked by Alexis
  84. algebra

    If theta= (7/6)*pi, find the equivalent angle measure in degrees.

    asked by Frankie
  85. Statistics

    I can do problems like this if the mean and standard deviation was given but what do I do if it's like this When asked whether they drink alcohol or not, 79 out of 441 college students said that they did not. Construct a 90% CI for the proportion of all

    asked by John
  86. algebra1

    The sears tower in Chicago is 1,454 feet high. suppose you take a sheet of paper and fold it once in half, than fold it in half again,and keep folding it over and over again. How many times would you have to fold it to create a piece of paper that is

    asked by madison
  87. Chemistry

    Is 10.0 mL of 0.10 M NH4Cl added to 10.0 mL of 0.10 M HCl a basic buffer? I think Yes. Right?

    asked by Jim
  88. chemistry

    Calculate the pH of a solution prepared by mixing 25.0 mL of 0.60 M HC2H3O2 and 15.0 mL of 0.60 M NaC2H3O2?

    asked by Julie
  89. Precal

    show that: (1-tanx)/(1+tanx)= (1-sinx)/(cos2x)

    asked by krista
  90. chemistry

    Calculate the pH of a solution prepared by mixing 25.0 mL of 0.60 M HC2H3O2 and 15.0 mL of 0.60 M NaOH?

    asked by Julie
  91. math

    how do i subtract (t+3)-(t+14)

    asked by edpon
  92. math

    You buy a square lot that is 154 yd on each side. What is its size in acres?

    asked by Sawa
  93. college algebra

    write two equations that have your two intergers as a solution. 5x-y=10 X + 6y=18 addition and subtraction methods

    asked by connie
  94. math: not sure how to figure out

    What are the odds against getting exactly two heads in three successive flips of a coin? The odds for are: 2/3 but I do not know how to figure out the probability of odds against getting exactly two heads in three successive flips.

    asked by bwb
  95. College Chemistry

    A spherical rubber balloon has an initial thickness of 0.45mm, and diameter 250mm. Final diameter of 1000mm. Find final thickness, true stress in the plane of the balloon wall, Air pressure required. (Assume rubber is idea and obeys Guassian statistics,

    asked by nick
  96. Algebra

    Hi, I need to find the gradient of a straight line with the equation 3x+5y=3 Any ideas/

    asked by Sam
  97. Bio

    need help writing a conclusion for my research paper..please help! I need to finish this ASAP. Thanks We find it mixed in our food on the shelves in the supermarket and growing in a plot down the lane. It is variously known as genetic engineering, which is

    asked by mysterychicken
  98. dago

    how much heat is needed to change 20g mercury at 20c into mercury vapor at the boiling point

    asked by charlo
  99. Chemistry

    When 20.0 mL of 0.10 M NaOH are added to 20.0 mL of 0.10 M hypobromous acid, HOBr, what is the hydrogen ion concentration (H^+)? Ka for HOBr is 2 x 10^-9. I get 5 x 10^-4. Is that right?

    asked by Mary
  100. Chemistry

    When 5 mL of 0.10 M HCl are added to 10 mL of 0.10 M NH3, what is the approximate pOH? Kb for NH3 is 1.8 x 10^-5. I get pOH between 4 and 5. Is that right?

    asked by Mary
  101. Accounting

    If the owner invests additional capital in the business during the month, how would that new investment be shown in the financial statements?

    asked by Iryna
  102. LAL

    (E)Essential and (NON)nonessential clauses check if these are right. do any sentence need commas? thx 1. the explorers whom i most admire are astronauts. (E) 2. one man who made space travel possible was Robert.(E) 3.goddard who tested many rockets helped

    asked by Sara!
  103. algebra 2

    how do i set up data to find the standard deviation of the data?

    asked by chicken littell
  104. algebra 2

    how do i set up data to find the standard deviation of the data?

    asked by chicken littell
  105. math

    why is 3+3=6 NOT in the fact family of 2,3,and 6

    asked by Aut
  106. College physics

    To what temperature will 7700 J of heat raise 3.0 kg of water that is initially at 10.0 degrees C?

    asked by S
  107. 4th grade

    why is 3+3=6 NOT in the fact family of 2,3,and 6

    asked by Aut
  108. College Physics

    A 8.2 gram lead bullet that was stopped in a doorframe apparently melted completely on impact. Assuming the bullet was fired at room temp., what is the minimum muzzle velocity of the gun?

    asked by H
  109. Algebra II

    simplify (^4 square root of 64) Would it be (^2 square root of 4) or (^2 sqyare root of 2)?

    asked by Anonymous
  110. Accounting

    I am trying to tell the difference between trade credit and opportunity costs, but now liking what I find on the internet. Is there a link that shows both? I could not find one. In order to do my assignment I need to compaire the two so I could figure out

    asked by Luke
  111. English

    1. Do you live around here? 2. Do you live about here? 3. Do you live near here? (Are they all grammatical and the same?)

    asked by rfvv
  112. English 122 Composition II

    IN YOUR POST, DISCUSS ANY AREAS RELATED TO CITING SOURCES THAT YOU FIND CONFUSING OR DIFFICULT TO UNDRESTAND OR APPLY.

    asked by vickie
  113. Chemistry

    Nacl(s)+ HCl---->H20 +NaCl(aq) delta H(amouint of energy aborbed by the solution is 4263.6J) Is it okay to say that H2 represents the heat evolved to neutralize 2g of NaOH with an acid

    asked by Ade
  114. English

    1. I'd love to introduce them to you. 2. I'd love to introduce to you them. (#1 is correct, right? What about #2? Is it wrong or right?)

    asked by rfvv
  115. Literature

    The autor of the play The Rising Moon named the play after an actual song.This is an example of A)a foil B)dramitic irony C)an allusion D)an understatement

    asked by Rebecca
  116. Literature

    ''Up above her was a tree in a pearly cloud of mistloe.''this quotation contains A)a simile B)a metaphor C)personfication D) an understatement

    asked by Rebecca
  117. algebra

    input = x output = x -2 so if i have 4 in the input box what would the output be please show how you got it

    asked by Anonymous
  118. Chemistry

    When you add 25.0 mL of 1.0 M NaF to 20.0 mL of 1.0 M HF,what would be the result? I think it's a basic buffer. Am I right?

    asked by Cory
  119. math

    in = x out = x negative 2 so if 4 is in then what is the out please show how you got it

    asked by sam
  120. 12th grade

    why is damage to grey matter permenant and not white matter

    asked by JeemJeem
  121. Chemistry

    When 20.0 mL of 0.100 M AgNO3 are mixed with 80.0 mL of 0.0100 M Na2CrO4, what is the chromate ion concentration (CrO4^2-)? Ksp for Ag2CrO4 = 9.0 x 10^-12. I think it's 1.0 x 10^-9. Am I right?

    asked by Cory
  122. Accounting

    If you were buying a business what would you look for in the company's financial statement?

    asked by Lashun
  123. English Essay Topic

    What are the biggest factors affecting wealth and success in America?

    asked by Ally
  124. algebra 3

    what statement best describes the function f(x)=2x^3+2x^2-x?

    asked by kevin
  125. Algebra2

    write the series with summation notation:-1,-7,-13,-19

    asked by Breanna
  126. financial Matters

    I need help in understanding this question given by my instructor. I have posted this question to her, three days ago and not getting any response. Please help!! What is meant by short-term bank notes and how does it apply for permanent financing at

    asked by Wanda
  127. Chemistryr

    Add 0.40 g of NaOH to 50.0 mL of 0.10 M HCOOH, and find approximate pH. No volume change, Ka HCOOH=1.8x10^-4. I get pH 8. Right?

    asked by Jim
  128. maath

    Factor the GCF from each term in the expression. Can you please show me the steps on how you reached your answer? Thank you!! 8m^7+6m^4-4m^2

    asked by Michael
  129. Math

    Solve the inequality. The answer is suppose to be x> or equal to -8. Everytime I solve it I get O. -16x+16< or equal to -4(3x-12)

    asked by Johnnie
  130. Chemistry

    Add 0.010 mol of solid sodium butanate, NaC4H7O2 to 100.0 mL of 1.0 M butanoic acid. No volume change. Ka for HC4H7O2=1x10^5. I get pH 6. Rught?

    asked by Jim
  131. Algebra

    Multiply: 5p-5/p times 5p^2/8p-8

    asked by Rick
  132. Math

    5a+6b/2 minus 5a+6b/2 The answer is suppose to be 6b. When I try and solve it I keep getting 0 for my answer.

    asked by Rick
  133. math

    Identify the numerical coefficient of the expression. –7t2

    asked by Sawa
  134. English

    Do you mind if I open the window? 1. No way! 2. Not in a million years. 3. Not at all. 4. Abosolutely not. (Ae all the answers correct? Why do you use the #2 answer? Would you explain it in detail?)

    asked by rfvv
  135. physics

    Hi! could anyone help me to solve this problem please. Thank you. Question:An electron has a speed of 0.68 c. (a) Find the speed of a proton that has the same kinetic energy as the electron. (b) Find the speed of a proton that has the same momentum as the

    asked by Chan
  136. science

    what is it called when you copy another animals patterns or behavior

    asked by babiigurl12
  137. Digital Imaging

    In regards to Photoshop 4, if you could recommend one feature for me as a beginner to concentrate on, that was pretty basic, but enhanced photos tremendously, what would it be?

    asked by Jim
  138. social studies

    How can a sociologist genuinely maintain value neutrality while studying a group that he/she finds repugnant?(for example, a White supremacist org, a satanic cult, a group of convicted rapists)

    asked by Pham
  139. Science

    2NO2. how many grams of NO2 will be produced with 5.00 moles of NO React? what would the working out of this be?

    asked by Sammy
  140. Math

    2/t=t/5t-12

    asked by Kylan
  141. math

    in = x out = 2 x so if -1 is in what is out , if 0 in what out, and if 3 in what is out these are three differint promgels and show how you got it

    asked by sam
  142. college physics

    two people- one twice as heavy as the other one, play tug-of-war with a 12m ideal rope while standing on a frctionless ice surface.Would any of them move and if he does, how far?explain why.

    asked by Anonymous
  143. math

    each week jacob earns 30 dollers jacob saves 3 5ths of his money weekly how much does he save each week

    asked by christian
  144. math

    2/3over2/9=x over 3/4

    asked by danita
  145. schumacher

    I need to know how to get the fraction 20 over66 to the simplest form using factop trees

    asked by chase
  146. 6th grade

    a model of a park was built on a scale of 1.5 centimeters to 50 meters.If the distance between two trees in the park is 150 meters,what is this distance on the model?

    asked by brea
  147. equations trig

    1) ctgx+cosx=1+ctgx*cosx 2) sin^4x+cos^4x=1/2 3) (sinx-cosx)^2=sin2x 4) sin^4x-cos^4x=7/2(sinxcosx) 5) sin^2x-sinxcosx+cosx-sinx=0

    asked by LiNnda
  148. Math

    When it asks Find the Function Rule for the Table..what does that mean..very simple terms for 3rd grade.

    asked by Susan
  149. grammar

    identify the case of the noun "statesman" in the sentence ben franklin was a great statesman

    asked by micah
  150. science

    Choose one of the following terrestrial resource challenges: o Loss of agricultural land o Reducing solid waste Post your response to the following: What are the challenges of managing your chosen terrestrial resource issue? What human activities

    asked by Anonymous
  151. 10th grade living enviorment

    what happens when a population or group of living things is divided into two separate groups in two separate environments ?

    asked by Dominique
  152. grammar

    What's the root word for "indefatigable"?

    asked by AL 92
  153. algebra

    Quan is shopping. He can buy 2 pairs of pants and 1 shirts for $79.85 ( before tax is added). He can buy 1 pair of pants and 2 shirts for $69.85 (before tax is added). To figure out how much a shirt or a pair of pants costs,you must first identify the

    asked by paul
  154. computors

    the benefits of cropping tools with photoshop 4

    asked by jen
  155. English

    1. Is it okay if I open the window? (What does 'it' refer to in this sentence?) 2. Do you mind if I borrow your pen? (What is the meaning of 'mind' in this sentence?)

    asked by rfvv
  156. algebra

    what is the solutionof the following linear system? 2x + y = -1 x + 1/2y =-1/2 a) (2,1) b) none c) (1/2,-2) d) infinite number of solutions

    asked by kiddo
  157. government

    Describe the difference between the government in North and South Korea.

    asked by Taylor
  158. ACCOUNTING

    COM/220 Grammar exercise week 3 1) dangling modifiers 2) misplaced modifiers 3) correcting dangling or misplaced modifiers

    asked by tony
  159. Algebra

    solve using the quadratic formula 2x^2 +6x-3=0

    asked by Marie
  160. Algebra II

    Does the square root of ((a^2)-(10a)+(25))simplify to a+5 times the square root of -10a ? Thank You.

    asked by Anonymous
  161. English

    1. You must be kidding. 2. You have to be kidding. (Can we use the second expression? Are both the same?)

    asked by rfvv
  162. Chemistry

    A spherical rubber balloon has an initial thickness of 0.45mm, and diameter 250mm. Final diameter of 1000mm. Find final thickness, true stress in the plane of the balloon wall, Air pressure required. (Assume rubber is idea and obeys Guassian statistics,

    asked by nick
  163. business law

    While Miguel lives in Texas, he buys a truck and immediately thereafter moves to Washington. On his way to Washington, he drives his truck through Oklahoma where he causes an accident by running into another car. The driver of the other car, Mindy, is from

    asked by Anonymous
  164. communications

    I am looking for 4 suggestions on how to make team oriented projects more efficent and effective with team members that are located in different area's geographically. I just want suggestions that I could research on and elaberate on. Please help.

    asked by debbie
  165. Algebra

    Would the square root of 5 + the square root of 20 equal 10?

    asked by Anonymous
  166. Math

    Solve for the indicated variable. Can you please show me the steps on how you get the answer so I know how to do it. Thanks. F=9/5C+32, for C

    asked by Ryan
  167. Pre-cal

    Find the vertex of y^2 + 4y + 2x +10 = 0. Use completing the square to put the equation into standard form as your first step. Could you show me how to get the vertex? Thanks

    asked by Randy
  168. chemistry

    Thanks for the Help

    asked by curtis
  169. ethnics

    The Official Language Movement · Resources: Racial and Ethnic Groups, the Internet, and the University Library · Investigate the Official Language Movement, which is an important Hispanic American cultural interest, described on pp. 243–244 of the

    asked by Anonymous
  170. Algebra 2 with trigonometry

    2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx

    asked by T
  171. algebra

    Sara and her sister Emily both collect charms for their charms bracelets. Together they have 42 charms. Emily has 2 more charms than Sara. How many charms does each girl have? a) Emily has 22, and Sara has 20. b) Emily has 20, and Sara has 22. c) Emily has

    asked by kiddo
  172. Algebra 2 with trigonometry

    2sin2xcos2x cos^4x-sin^4x (sinx+cosx)^2-sin2x 2sinxcos^3x+2sin^3xcosx

    asked by T
  173. Economics

    Verify Euler’s theorem for the function f(x,y)=30(x^0.5)(y^1.5)-2(x^3)(y^(-1))

    asked by Anonymous
  174. hum 103

    How does Sonata (complete work differ from Sonata form, how are they related. Any help please

    asked by Kurt
  175. math

    what looks like a rectangular prism

    asked by miranda
  176. science

    The greatest velocity a falling object reaches is called its what?

    asked by Sophie
  177. Science

    What is the smallest and largest planet that we have discovered?

    asked by Debbie
  178. computer

    Think about how your computer system compares to a state-of-the-art system

    asked by tee
  179. Statistics

    A sample of four supermarkets is to be selected from a total of eight in a small town. How many different random samples without replacement can be drawn?

    asked by Kassie
  180. algebra

    Hi, I can't figure this story problem out can u please help? I need to learn how to do this story problem. You dive directly upward on a board that is 32 feet high. After t seconds, your hight above the water is described by the polynominal -16t^2+16t+32.

    asked by Christy
  181. Chemistry

    A solution of ethanol (C2H5OH) in water is prepared by dissolving 76.9 mL of ethanol (density 0.79 g/cm^3) in enough water to make .250 L of solution. What is the molarity of ethanol in this solution?

    asked by Anonymous
  182. math - classifying events

    A market survey has estimate that the probability of a household's subscribing to the following magazines is: Reader's Digest - 0.6 Chatelaine - 0.5 Maclean's - 0.4 Reader's Digest and Chatelaine - 0.2 Reader's Digest and Maclean's - 0.2 Chatelaine and

    asked by CL
  183. Economic

    “We’ll cut your taxes” is the most repeated campaign promise in the history of American politics. Yet somehow it is still considered visionary, worth a fight. Worth, indeed, a crusade. Why? It’s in our blood. Historically, Americans have hated

    asked by Candace
  184. science

    what are surface waves?

    asked by chloe
  185. physics

    How long would our year be if our Sun were two fifths its present mass and the radius of the Earth’s orbit were six times its present value?

    asked by erin
  186. critical thinking

    what is thinking

    asked by kendra
  187. government

    Whats the difference between the government in North and South Korea?

    asked by Taylor
  188. Math:Radical + regular number

    Example : 4 + 5 radical 3 How does that work?? And how do you divide the answer with 12? (P.S made the problem up but that's the concept of what I don't get)

    asked by Gint
  189. algebra

    thanks drwls i have the correct answer thanks again :)

    asked by kiddo
  190. algebra

    a piece of wire 27/32 inch in length is cut into 3 equal peices how long is each peice (math)

    asked by kaysan
  191. Algebra

    13. Find the domain of y=2x+1 I'm not sure how to do this, and what the answer is. 27. Which variable is usually associated with the concept of input? a. x b. y c. m d. b A

    asked by y912f
  192. accounting

    Ken is 63 years old and unmarried. He retired at age 55 when he sold his business, Though Ken is retired, he is still very active. Ken reported the following financial information this year. Assume Ken’s modified adjusted gross income for purposes of the

    asked by Moncha
  193. Chemistry

    What is the purpose of washing and drying the thermometer between readnigs?

    asked by Nikki
  194. Economics

    A two product monopolist faces the demand and cost functions as below: Q1=40-2(P1)-(P2) Q2=35-(P1)-(P2) C=(Q1)^2+2(Q2)^2+10 a) Find the profit maximizing levels of output and the price charged for each product.

    asked by Anonymous
  195. Chemistry

    Why is a NaOH solution disposed differently than a solution composed of Water and Nacl2

    asked by Marge
  196. Accounting

    Which of these assets are "quick assets"? -Cash and cash equivalents -Short-term investment -Trading assets -Accounts receivable -Inventories -Deferred tax assets -Other current assets I am thinking "cash and cash equivalents" and "accounts receivable"

    asked by Mike
  197. geometry

    find the measure of diameter AC if BP = x and AC= 5x-6

    asked by brittaney
  198. Chemistry

    I need to know if I am anywhere in solving this problem: Please tell me if this is correct. The pH of a solution: 0.20 M CH3COOH and 0.10 M CH3COONa pH=pKa+log{[CH3COONa]/[CH3COOH]} pH= -log(1.8x10-5)+log{0.10/0.20} pH= 4.74+log 0.50= 4.74-0.30= 4.44

    asked by curtis
  199. English

    Should this sentence have a comma in it? The excitement and adventures he gained along the Mississippi River as a steamboat pilot gave him the insight into characters that are in his writings.

    asked by Jennifer
  200. math

    double my tens digit to get my ones digit. double me and i am less than 50

    asked by Anonymous
  201. Math

    a total of $ 14,000 is invested in two funds paying 4% and 5% annual interest. The combined interest is $620 a)write a system of equations to model this problem b). graph this system and use the graph to estimate how much was invested in each fund?

    asked by LAnae
  202. 5th grade

    If I have a perimeter of 28 inches, how many rectangles can I draw and what are the dimensions?

    asked by Chris
  203. Math

    A box contains four red marbles, seven white marbles, and five blue marbles. If two marbles are drawn one at a time, find the probability that both marbles are white if the draws are made as follows: (a) With replacement ____________ (b) Without

    asked by Star K