Questions Asked on
March 21, 2010

  1. APChem

    Hi I tried to understand this but I don't know why the answer is B: Which one of the following pairs cannot be mixed together to form a buffer solution: A) NaC2H3O2, HCl B)RbOH, HBr C) NH3, NH4Cl D) H3PO4, KH2PO4 E) KOH, HF The answer is B but could you

    asked by Kiki
  2. chemistry

    When excess solid Mg(OH)2 is shaken with 1.00 L of 1.2 M NH4Cl solution, the resulting saturated solution has pH = 9.30. Calculate the Ksp of Mg(OH)2 I am not sure where to even begin on this problem.

    asked by Raj
  3. Math

    An auditorium has 30 rows with 10 seats in the first row, 12 in the second row, 14 in the third row, and so forth. How many seats are in the auditorium My answer is 1170 but the way I figured out the problem was by listing numbers 1-30. the problem state

    asked by Nikki
  4. Physics

    A 0.32 kg meter stick balances at its center. If a necklace is suspended from one end of the stick, the balance point moves 39.0 cm toward that end. What is the mass of the necklace?

    asked by Tory
  5. chemistry

    what is the maximum number of grams of PH3 that can be formed when 6.2 g of phosphorus reacts with 4.0 g of hydrogen to form PH3

    asked by jose
  6. pH levels

    Rank the following solutions in order of decreasing [H3O^+]. .10 M HC2H3C2 .10 M HC6H5O .10 M HF ,10 M HBr I think the correct order is: HBr>HF>HC2H3C2>HC6H5O am i right?

    asked by Kyle
  7. APChem

    Hi! Thank you for your help... A 25.0 mL sample of 0.723 M HClO4 is titrated with a 0.273 M KOH solution. The H3O+ concentration after the addition of 66.2 mL of KOH is ______M. (The answer is supposed to be 1.00X10^-7) How do I set this problem up? I

    asked by Kiki
  8. calculus

    s(t)=-16t^2+v(subscript0)t+(subscrpt0) a silver dollar is dropped from the top of a building that is 1362 feet tall. a) determine the position and velocity f'cn for the coin. b) determine the avg velocity on the interval [1,2] c) find the instantanous

    asked by evie
  9. Social Studies

    Why do you think dictators need to find scapegoats for their nation's ills? Explain.

    asked by Jay
  10. Chemistry

    What are the major organic products of this reaction: CH3CH2CH2COCH2CH3 (an O is double bonded to the C before the O) + H2O --> (acid is above the arrow) DrBob222- There are 2 oxygens. I said there is an O double bonded to the C. So there is the O after

    asked by Bobby
  11. Chemistry

    There exists a correlation between maximum electrostatic potential and acid strength. As pKa decreases (acid strength increases), the maximum electrostatic potential for a molecule increases. Given a particular acid, is there any way to determine the

    asked by Joe
  12. Chemistry

    For the following electrochemical cell, what is the correct, balanced reaction? Cu(s) | Cu2+(aq) || Ag+(aq) | Ag(s) A. Cu(s) + Cu2+(aq) → Ag+(aq) + Ag(s) B. Cu(s) + Ag+(aq) → Cu2+(aq) + Ag(s) C. Cu(s) + 2 Ag+(aq) → Cu2+(aq) + 2 Ag(s) D. Cu2+(aq) +

    asked by Val
  13. chemistry

    what is the product of reaction K3(Al(C2O4)3).3H2O with KMnO4 in the present of H2SO4?

    asked by atika
  14. Physics

    Calculate the specific heat of a metallic element if 314 joules of energy are needed to raise a 50.0 g sample from 25 to 50 degress C ? :)

    asked by Christina
  15. Chemistry

    here is the question. it is a fact that when you add acetone to saturated sodium chloride, the equilibrum shifts towards the right. what observation supports this fact? what is the role of acetone in shifting the equilibrium towards the right side? What

    asked by Dalala
  16. AP Chem

    Determine the [H3O^+] of a 0.240 M solution of formic acid.

    asked by Eddie
  17. ocean county college

    A 150 g sample of metal at 55.0 C raises the temperature of 150 g of water from 23.0 C to 35.0 C. Determine the specific heat of the metal in J/g C. Hint: #1 First find heat absorbed by water using formula q = mass x specific heat x change in temp (of

    asked by adina
  18. Writing research

    What were some arguments and counter arguments of Martin Luther King's " I have a dream" speech? I have recognized bias, fallacies, and rhetorical devices. I am having trouble identifying counter arguments.

    asked by I need help
  19. Chemistry

    When you add CuSO4+KI the substance stays clear and when you add hexane to it it became brownish yellow and a red substance was present how do you explain this?

    asked by Dalala
  20. Math

    Find the quadratic function that has the indicated vertex and whose graph passes through the given point. Vertex: (2,3) Point: (0,2) I do not know how to do this! Please explain!! Thank You

    asked by Abbey
  21. Physics

    You pull downward with a force of 27 N on a rope that passes over a disk-shaped pulley of mass 1.3 kg and radius 0.075 m. The other end of the rope is attached to a 0.61 kg mass. Find the tension in the rope on both sides of the pulley. I found that the

    asked by Mary
  22. Biology

    Match the terms with the correct description: a. regulates supply of gases from ATP production b. provides negative feedback signals c. protects body against foreign dangers d. "rapid transit" for liquids and gases e. primary "regulator" of sensory

    asked by mysterychicken
  23. Algebra

    The volume of a sphere is given by: V=4/3 pie r cubed. Use the formula, and show your workings, to find out what happens to the volume of a sphere if r is halved and r is trippled? Please help as this has just completly lost me, i end up with V = 4/3 Pie r

    asked by StephanieNZ
  24. Organic Chemistry Lab

    ISOLATION OF CHLOROPHYLL AND CAROTENOID PIGMENTS FROM SPINACH: What would happen to the Rf values of the pigments if you were to increase the relative concentration of acetone in the developing solvent ? I said the Rf values would be higher because Acetone

    asked by Chinma
  25. World History

    How was mao's vision of communism different from that of lenin?

    asked by tatiana
  26. Physics

    100-g sample of substance is heated to 100˚C and placed into calorimeter cup containing 150 g of water at 25˚C. The sample raises the temperature of water to 32.1. What is the specific heat of the substance?

    asked by John
  27. Chemistry

    What is the percent by mass of Ca3N2?

    asked by Sam
  28. Chemistry

    The solubility of compounds containing the carboxylic acid group can be increased by reaction with a) sulfuric acid b) nitric acid c) sodium hydroxide d) water e) benzoic acid Would it be sodium hydroxide since it is a base?

    asked by Kristin
  29. physics

    A.A pair of narrow, parallel slits separated by a distance of 0.335 mm are illuminated by green laser light with wavelength = 543.0 nm. The interference pattern is observed on a screen 2.43 m from the plane of the parallel slits. Calculate the distance

    asked by Andy
  30. Math

    Using the Substitution method solve 7x+5y=-23 -6x+y=25

    asked by Bryant
  31. optics ray tracing

    light travels in a straight line, why is this important for the technique of ray tracing?

    asked by Jose
  32. Social Studies

    How does geography affect where people live and work in Canada?

    asked by Amelia
  33. CHEMISTRY

    I have two: 1. why can you not find the mass of a beaker, water, vinegar and alka seltzer in one step rather than recording alka seltzer by itself? 2. what is maximum volume of vinegar that can be neutralized by one alka seltzer tablet and explain answer?

    asked by DEBBIE
  34. Finite Math

    If A = (aij ) is a matrix of size 2x3, and if aij = 2i- 3j for all i and j write down A.

    asked by Bryce
  35. math word problem

    There are 10 women and 8 men in a club. How many different committees of 6 people can be selected from the group if equal numbers of men and women are to be on the committee? I think it would be 2, because half of 6 is 3, so 3 are men and 3 are women. 2

    asked by Paula
  36. Calculus

    Find the derivative of y with respect to x: y=(1+cos²x)^6 y'=6(1+cos²x)^5 How do you derive inside the brackets? The answer says -sin2x, but wouldn't it be -2sinx, using the chain rule.

    asked by sh
  37. Chem

    Consider this reaction: CO (g) + H2O (g0 CO2(g)+H2(g) kc=102 at 500 K A reaction mixture initially contains 0.145 M of CO and 0.145 M of H20. What would be the equilibrium concentration of [CO]? I so far have kc= [H2][CO2]/[CO][H2O]= 102 I know i have to

    asked by Katie
  38. english

    For the Unit 1 Discussion Board assignment, you will: (1) select a topic from the list below, (2) develop a thesis statement from your topic selection and post your writing strategies for developing your thesis, (3) explore the features of the MyCompLab

    asked by Anonymous
  39. economics

    A New Hampshire resort offers year-around activities: in winter, skiing and other cold-weather activities; and in summer, golf, tennis, and hiking. The resort’s operating costs are essentially the same in winter and summer. Management charges higher

    asked by J
  40. Physics

    A capacitor of capacitance C= 10mF, is charged using a battery of potential V, through a resistor of resistance R = 250 ohms. the charge of the capacitor is given by Q(t)=CV[1− e ^ (−t/RC)] Find an expression for the current passing through the

    asked by drwales
  41. Accounting

    Your company is considering a replacement of an old delivery van with a new one that is more efficient. The old van cost $30,000 when it was purchased 5 years ago. The old van is being depreciated using the simplified straight line method over a useful

    asked by ananoumous
  42. math

    it costs mr kringle $10 to make 100 gaint pretzels for his bakery. if he sell his pretzels for .25 each, how much profit will he make after selling all 100 pretzels?

    asked by ssmomo
  43. finance

    Your company is considering a replacement of an old delivery van with a new one that is more efficient. The old van cost $30,000 when it was purchased 5 years ago. The old van is being depreciated using the simplified straight line method over a useful

    asked by ananoumous
  44. Algebra

    One pump can drain the pool in 11 minutes. When a second pump is used, it only takes 9 minutes. How long would it take the second pump to drain the pool if it were the only pump in use?

    asked by ReRe Please Help!!
  45. algebra

    Marlene rides her bycicle to her friend Jon's house and returns home by the same route. Marlene rides her bike at constant speeds of 6mph on level grond, 4mph when going uphill and 12mph when going downhill. If her total riding time was 2 hours, how far

    asked by Kenneth
  46. Computer Networking

    Bispling International Banking has expanded recently to included two new buildings for a total of three, roughly arranged in a triangle with each building about 500 meters apart. Previously, these buildings were wired with Cat3 UTP 10BaseT Etherent. The IT

    asked by Mary
  47. Biology

    *Yawn* Match the terms with the correct description: a. regulates supply of gases from ATP production b. provides negative feedback signals c. protects body against foreign dangers d. "rapid transit" for liquids and gases e. primary "regulator" of sensory

    asked by mysterychicken
  48. science

    Why did scientists once think there were volcanoes on the moon? What evidence from the Apollo landings makes this unlikely

    asked by hillary post
  49. Chemistry

    What are the major organic products of this reaction: CH3CH2CH2COCH2CH3

    asked by Bobby
  50. Physics

    Hi, I've been having issues with solving this problem. Could anyone help? Two blocks, of masses M = 2.0 kg and 2M are connected to a spring of spring constant k = 215 N/m that has one end fixed, as shown in the figure below. The horizontal surface and the

    asked by Jack
  51. world history

    What single event set in motion the start of WW1?

    asked by tatiana
  52. english: poem

    do you think this poem's emotion is optimistic? Calgary 2 A.M. In spite of the fact that it's twenty below and winter has gone on for five long months, in spite of being starved, starved almost to death for greenness and warmth, flowers and birds, in spite

    asked by larry
  53. Math

    Identify n(S) for the given set. S = {f, h,m, r} A) 4 B) 0 C) Infinite D) 3 is the answer c, since the given set can have a unlimted number of elements. or is it b, since the letters are not in order?

    asked by Hannah
  54. Math

    Is anyone familiar with base ten? I need to show my work on how I received my answer. Write the numeral in base ten. 200six =532

    asked by kevin
  55. Math (trig)

    In ABC, sin A equals 2/3 , sin B equals 4/5 , and side a equals 20 Find side b?

    asked by Sally
  56. chemistry

    At 300.K and 1.00 atm, assume that 25 mL of NO gas reacts with 22 mL of oxygen gas and excess water to produce nitric acid according to the following equation: O (g) H O(l) 2 HNO (g) 2 2NO(g) 3 + 2 + 2 ⎯⎯→ 3 . If all of the nitric acid produced by

    asked by bob
  57. Chemistry

    How do i write the equation betwen ethanoic acid CH3COOH and urea (NH2)2CO? I think they form carbondioxide and an ammonium salt, but how do i write the actual equation?

    asked by Hallie
  58. Math

    What do the digits in the number 15 add up to? Answer 1+5=___. Using single digits, how many different ways can you add up to 6?. Example: The least number of digits is 2, and it is 1+5=6. The greatest number of digits is 6, and it is 1+1+1+1+1+1=6. 1.How

    asked by Mohammed
  59. Finite Math

    If A = (aij ) is a matrix of size 2x3, and if aij = 2i- 3j for all i and j write down A.

    asked by Bryce
  60. Algebra

    One pump can drain the pool in 11 minutes. When a second pump is used, it only takes 9 minutes. How long would it take the second pump to drain the pool if it were the only pump in use?

    asked by Anonymous
  61. social studies

    what were the social, economic, cultural and political consequences of the Industrial Revolution? explain.

    asked by Dellaine
  62. Social Studies

    What was the main difference between the Hudson Bay Company and the Northwest Company in terms of the way their businesses were structured?

    asked by Liz
  63. algebra

    How do I solve this with the elimination method? 5x-10y=4 5x-10y=5 I need x=, and y= to get an ordered pair, but every time I mult. by a neg, everything goes away instead of just one variable! please help!

    asked by bob
  64. Chemistry

    Sorry I accidently hit enter and it posted my question before I was finished... What are the major organic products of this reaction: CH3CH2CH2COCH2CH3 (an O is double bonded to the C before the O) + H2O --> (acid is above the arrow)

    asked by Bobby
  65. algebra

    really struggling with this problem admission to a baseball game is $2.00 for general admission and $5.50 for reserved seats. The receipts were $3408.00 for 1025 paid admissions. How many of each ticket were sold?

    asked by jerson
  66. Trigonometric

    Find the exact value of cos7(pi)/12 using sum and/or difference identities.

    asked by Michael
  67. com150

    Provide three credible sources for healthy eating. my subpoints are education, preparation, organization and effort.

    asked by alicia
  68. math word problem

    Jim is making a diagram of the solar system. If he draws Neptune, which is 2795 million miles from the sun, 10 inches from the sun on his paper, how far away (to the nearest tenth of an inch) from the sun should he draw Mars, which is 142 million miles

    asked by Paula
  69. math

    one canned jucie drink is 15% orange jucie; another is 10% orange jucie. How many liters of each should be mixed together in order to get 5L that is 11% orange jucie? How many liter of the 15% orange jucie? how many liters of the 10% orange jucie?

    asked by Tim
  70. Algebra

    Write an equation of the line satisfying the given conditions. Parallel to the line y=-5x-6 and a y-intercept of -2

    asked by Tammy
  71. social studies

    list five specific types of power that the president has and give one example of each?

    asked by kristen
  72. Math

    Solve 4y-3 less than 7y-4 is the answer less than 2?

    asked by Tricia
  73. Math

    Miguel's insurance compnay will replace his car if repair costs exceed 80% of the cars value. The car resently substained $10,800 worth of damage, but it was not replaced. What was the value of his car. A)Less than 13,500 B)More than 8640 C)13500 D)Greater

    asked by Maryann
  74. Math

    2) Find f x g, g x f, and f x f f(x) = 3sqrt x-1 g(x) = x^3+1 For the f(x) the 3 is little above the sqrt sign. I do not understand how do find these.

    asked by Hannah
  75. com140

    how will you apply the knowledgeyou have gained about effective buisness communication in your current or future job and college courses?

    asked by cori
  76. French History

    Is this good information about the Notre Dame cathedral? Notre-Dame's first version was a magnificent church built by Childebert I, the king of the Franks at the time, in 528, and was already the cathedral of the city of Paris in the 10th century. However,

    asked by jenny
  77. Physics

    Light travels in a line of optical fiber by total internal reflection between a core of refractive index 1.48 and a cladding 1.46 refractive index. The critical angle for total internal reflection to occur inside the core of the fiber is ... 80.6º 48.8º

    asked by Samantha
  78. math

    Solve 4y-3 less than 7y-4

    asked by Tricia
  79. Physics

    A mass spectrometer is used to separate isotopes. If the bean emerges with a speed of 374 km/s and the magnetic field in the mass selector is 1.5 T, what is the distance between the collectors for 235U+1 and 238U+1? The mass of 235U+1 is 235 u and the mass

    asked by Jane
  80. trigonometry

    A lighthouse BC of unknown height stands on the edge of a cliff AB. From a point O, 2500 ft from the base of the cliff, an observer measures the angles of elevation of the top and bottom of the lighthouse and finds them to be 15°40' and 12°13'. How high

    asked by Michael
  81. Geography

    6. Throughout East Asia, most of the labor force works in a. trade b. farming c. mining d. aquaculture I'm lost between B and D

    asked by y912f
  82. physics

    if 1 kilogram of ice is dropped in 9 kilogram of water at 50 degree centigrade. what will be final temperature of water. while the latent specific heat of fusion of ice is 336000 joule/kilogram

    asked by abid naeem
  83. Math

    Identify n(S) for the given set. S = {f, h,m, r} A) 4 B) 0 C) Infinite D) 3 is the answer c, since the given set can have a unlimted number of elements. or is it b, since the letters are not in order?

    asked by Hannah
  84. algebra

    Sue can shovel snow from her driveway in 40 minutes. Tom can do the same job in 35 minutes. How long would it take Sue and Tom to shovel the driveway if they worked together?

    asked by ina
  85. social studies

    can someone help me with a website or reference on creating a timeline tracking the major themes/paragism shifts in american history from the developement of sectionalism in the early 1800's throught the end of the prgressive era in the early 1900's

    asked by Dellaine
  86. Biology

    During the follicular stage of the menstrual cycle, both FSH and estrogen are high, but aren't estrogen and FSH on a negative feedback loop? Is it just because FSH is not directly involved in the increase of estrogen (it is the follicle that increases

    asked by Stuck
  87. Math

    Hockey teams recueve 2 points when they win and 1 point when they tie. One season, a team won a championship with 66 points. They won 12 more games than they tied. How many winds dd the team have and how many ties?

    asked by Carl
  88. spanish

    ¿Dónde te graduaste de la secundaria (high school)?

    asked by paul
  89. Algebra

    Use the Rational Theorem to list the possible rational roots. f(x)=x^2+2x+1 f(x)=x^2-2x+5 f(x)=x^2+4x-5

    asked by Paula
  90. Social Studies

    What is the process of an amendment? Could someone sums up how can 1 get pass? Thanks

    asked by Shadow
  91. Chemistry

    The solubility of compounds containing the carboxylic acid group can be increased by reaction with a) sulfuric acid b) nitric acid c) sodium hydroxide d) water e) benzoic acid

    asked by Kristin
  92. Pre-Cal

    Identify any asymptotes of the graph. y = 1.08^5x

    asked by Mark
  93. History

    Why did relations between the Superpowers change in the years 1962-75?

    asked by Meera
  94. Human Capital

    What is the relationship between the business strategy and the organizational culture regarding staffing decisions?

    asked by Mary
  95. Calculus

    Find the derivative of y with respect to x: y=3sin^4(2-x)^-1 y=[3sin(2-x)^-1]^4 y'=4[3sin(2-x)^-1]^3 (-3cos(2-x)^-1)(-1) -(2-x)^-2 y'=[12cos(2-x)^-1][3sin^3(2-x)^-1][2-x]^2 but the answer does not have a 3 in front of sin. What happened to the 3?

    asked by sh
  96. algebra

    How would u solve 2r\r+5 -2(r+5)(r-4)=4(r-4) I don't kow if I should distribute the negative 2 to (r+5) What should I do from here?

    asked by michelle
  97. Algebra

    Solve by the elimination method 2r-5s=1 5r+2s=46 The solution is _______, or there are infinitely many solutions, or there is no solution

    asked by Liz
  98. critical thinking

    Identify any examples of bias presented by the author. If none exist, explain how you determined this Identify and name any rhetorical devices used by the author. If none exist, explain how you determined this. Identify and name any fallacies used by the

    asked by J_S_10
  99. math

    Find the ordered pair using the elimination method. 4x+5y=3 8x+10y=6

    asked by Scott
  100. English

    Thank you very much very much for your help. I just wanted to make sure about the grammar in the following sentences, too. 1) He found many things which he wanted to take ashore. Therefore/so, he began searching for a boat in order to transport them to

    asked by Franco
  101. Chemistry

    Which of these solvents: hexane, ethanol,or distilled water, would work as effective grease removers?

    asked by Tina
  102. Math(Please help)

    Identify the vertex, intercepts, and zeros of the function. g(x) = x^2 + 8x + 11 Please help!!

    asked by Abbey
  103. Statistics

    Consider pairs ,..., for i=1, ...,n. zi=cxi+d Express b sub(z*x) in terms of b sub(y*x) and a sub(z*x) in terms of a sub(y*x). I have been stumped on this one for hours! Sub (y*x) means its a subscript. Thank you to anyone who can help :)

    asked by Kassie
  104. Statistics

    If Y' = a +bX for all i and a=the mean of Y - b*the mean of X, prove that SigmaY' = SigmaY (subscript i). Hint: replace a with mean of Y minus b*mean of X and take the sum of both sides of the equation--that is, SigmaY'(subscript i)=Sigma(mean of Y-b*Mean

    asked by Kassie
  105. College

    Case Eastern Junior College awarded 26 varsity letters in crew, 15 in swimming, and 16 in soccer. If awards went to 46 students and only 2 lettered in all sports, how many students lettered in two of the three sports?

    asked by Anonymous
  106. biology

    two heterzygous parents are crossed.if the two locii are linked what would be the distribution of phenotypic features in F1 generation for a dihybrid cross?

    asked by bina
  107. algebra

    ((5v)/(v^3-5v^2+6v))-((4)/(v-2))-((3V)/(3-V))

    asked by James S.
  108. Chemistry

    Determine the pH of each of the following solution. a solution that is 5.8×10^−2 M in HClO4 and 2.6×10^−2 M in HCl

    asked by Kyle
  109. Calculus

    Find the derivative of y with the respect to x: y=sin‾²(x³) y'=cos‾²(x³)(3x²) y'=3x²cos‾²(x³) How come my answer is incorrect? Thanks in advance.

    asked by sh
  110. MATH - Can someone please help!

    What is the solution of the interval notion? x less than 6 and x greater than -3

    asked by BOB
  111. English

    I wonder if you could have a look at the following summary of Chapter 4 of Robinson Crusoe which I need to prepare for tomorrow. I thank you in advance. 1) When Crusoe woke up, he found the weather clear and the storm over. The ship had been carried by the

    asked by Franco
  112. 8th grade

    What would be the right way to convert base 16 to base 10, such as for an example, 1BD base 16 to base 10?

    asked by Khyir
  113. Math 116

    As you are leaving the community, you notice another new community just down the street. Because you are in the area, you decide to inquire about it. a) The sales representative here tells you they also have two floor plans available, but they only have 30

    asked by KiKi
  114. Math

    Perform the indicated operations and reduce all results to lowest terms. Assume the variables are restricted to values that prevent division by 0. (x^2-y^2)/(x^2-2xy+y^2) divided by (3x+3y)/(7x-21) Could someone please show me how to do this so I can do

    asked by Chad
  115. social studies

    between 1962 and 1967 the supreme court reviewed and decided on four court cases involving law enforcement officers and persons accused of criminal acts. what were the four cases and have the decisions affected law enforcement today?

    asked by kristen
  116. World History

    What started the civil war in china?

    asked by tatiana
  117. Math

    Given that P(A)= 1/36, what are the odds against A occuring? I found this formula in my chapter odds against A= 1-P(a)/P(a) Would it be 1-1/36 over 1/36? Or how do I go about it?

    asked by Carrie
  118. biotechnology

    what would be the molar concentration of human DNA in a human cell?

    asked by bina
  119. English Research Project Information - Sadako

    For my english research essay, I will need two print sources. I am doing the topic on Sadako (the girl from "A thousand Paper Cranes") The librarians at my school told me that they didn't have any books on her. Do you know of a reference/nonfiction book

    asked by NEEDSHELP(:
  120. health

    Medical and clinical staffs, such as physicians and nurses, have roles and responsibilities different from those of hospital administrators. · Describe at least two roles of medical or clinical staff, and two roles of hospital administration that are

    asked by jojo
  121. Chemistry

    how many moles of hydrogen chloride would be needed to react completely with 15g of barium carbonate equation is given: BaCO3 + 2HCl to BaCl2 + H2O + CO2

    asked by Johnny
  122. Math

    Could someone please help with this question. State the properties of y = 2sec(-2x + 180°) + 3. My answer: First I graphed y = 2sec(-2x + 180°) + 3 in the following way. 1)graph y=sec(x) 2) apply a horizontal compression by a factor of 1/2. 3) apply a

    asked by Matt
  123. math

    5x-y=36 5x+6y=-6 Find the solution in ordered pairs.

    asked by Lisa
  124. government

    Without our two great political parties cutting across economic and geographic interests,can democracy as we know it have been made to function?

    asked by Share'
  125. social studies/canada

    According to the United Nations,Canada is a great place to live. How do both natural resources and government policies combine to make this true?

    asked by Olga
  126. economics

    3. Consumer spending on durables falls, draw a graph to analyze the effects of this change in real interset. 4. The Canadian demand for Mexican Pesos is downward sloping and supply of pesos is upward sloping. Assume a system of flexible exchange rate

    asked by kelvin
  127. English

    1. Tape a stick to/on/at the back of the puppet's body. 2. Tape a stick to/on/at each of the puppet's hands. (Which preposition do we have to use?)

    asked by rfvv
  128. 11th grade

    what steps did the government take to respond to a demand by many Americans to control?

    asked by Sani
  129. physics

    Have tried many unsuccessful attempts at this project. Using only 3 letter size papers and clear tape, build something to allow a soft egg to drop unbroken. Used 1 rectangular paper as parachute, taped in corners by 4 long strips attached to an open paper

    asked by Ryan
  130. Civics

    Are there any reliable websites that would give information and statistics on improvements that should be made to Immigration Canada?

    asked by Emily
  131. Oceanography

    I have an exam in oceanography coming up and I'm having a little trouble understanding directions. For example in my review sheet he asks question like this: In what compass direction does the coriolis force act in the following situations: An object

    asked by Krysten
  132. math

    Mathematically, why is a manhole cover round?

    asked by paige
  133. algebra

    Find the slope and y-intercept, write fractional answer in lowest terms. 2y+9x+6=19+9x

    asked by jess
  134. trigonometry

    Establish the following identity. 1/1-cosx + 1/1+cosx = 2csc(squared)x

    asked by Michael
  135. social study

    what were the consequences of the progressive era? how did the movement change from the early period to the later period? what were some of the goals in the early period and what were some of the goals in the later period? did it accomplish its

    asked by Dellaine
  136. english

    With reference to the concept of Monomyth, what is the treatment of the hero’s ’separation’ and ‘initiation’ in A Doll’s House by Henrik Ibsen and Candide by Voltaire?

    asked by Michael
  137. calculus

    What is the derivative of x^2 -4y -tanxy=0

    asked by ujay
  138. Science

    When all of the hydrogen of the Sun is used up, it will turn into a _________?

    asked by Sara
  139. Algebra

    Solve by the substitution method 9x+8y=-5 x=40-9y The solution is _______ or there is no solution

    asked by Liz
  140. Math

    Identify the vertex, intercepts, and zeros of the function. g(x) = x^2 + 8x + 11 Please help!!

    asked by Abbey
  141. physics

    Two horizontal parallel wires which carry currents I1 = 45 A (top)and I2 (bottom). The top wire is held in position, the bottom wire is prevented from moving sideways but can slide up and down without friction. If the wires have a mass of 9.2 g per metre

    asked by Jane
  142. algebra

    Find an equation of the line having the given slope and the given point. m=0 (o,-4) would it be y=-4?

    asked by jess
  143. Math

    Simplify by removing factors of 1 9w-36/4-w What is the simplified form?

    asked by Deb
  144. Math

    If f(x)=4/2-x, find the f(a), f(a+h), and f(a+h)-f(a)/h, where h is not equal to 0.

    asked by Jennifer
  145. Chemistry

    lets say we have Cu(NO3)2 and then we add NaOH. so Cu(NO3)2 + NaOH and then we add HNO3 to it what wil happen?

    asked by Dalala
  146. Math

    Give the ordered pair solution 2x-6y=24 3x-9y=-15

    asked by Holly
  147. HRM240

    I have a paper due tonight be midnight is it possible to have someone write it in time?

    asked by ann
  148. Algebra :\

    these questions are: ELIMINATION USING MULTIPLICATION: 1. 2. 2x + 5y = 3 2x + y = 3 -x + 3y =-7 5x + 3y = 2 I NEED HELP ASAP!!!! HELP PLEASE!!!!

    asked by Presley
  149. science

    if you had a book on a table and gravity suddenly storp whay would happen to the book?

    asked by hello
  150. math

    let f(x)=sqrt of 121-x^2 a. graph the function b. state the domain and range of f(x)

    asked by Jennifer
  151. math

    Solve 5x+16 greater than 1 and 2x-21 greater than -17.

    asked by Jennifer
  152. math

    I am a three-digit number i am less than 200 i am divisible by 12,and by 9 my units digit is less than my tens digit

    asked by ssmomo
  153. Math

    Write interval notion for the set {x -1 G.T. X G.T. -9} multiple choose A)[-9,-1) B)(-9,-1) C) (-9,-1] D) [-9,-1]

    asked by Holly
  154. math

    Solve using elimination method x+5y=21 -x+5y=19

    asked by Steven
  155. nutrition

    What factors that affect your food choices and explore what has affected those choices you eat on a daily basis.

    asked by Briana smith
  156. Pre-Calculus

    Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these

    asked by Mark
  157. Math

    What is the derivative of x - 4/x square. Just the denominator is squared.

    asked by Mohamed
  158. criminal justice

    who would be in charge of the merged departments by john t krimmel.

    asked by guadalupe
  159. Math

    Find the quadratic function that has the indicated vertex and whose graph passes through the given point. Vertex: (2,3) Point: (0,2) I do not know how to do this! Please explain!! Thank You

    asked by Abbey
  160. chemistry

    What aldehyde and primary alcohol might be oxidized to yield 4-methylcyclohexanoic acid?

    asked by Jamie
  161. math

    Mary has a solution that is 60% alcohol and another that is 20% alcohol. How much of each should she use to make 100 milliliters of a solution that is 52% alcohol?

    asked by emmet
  162. Physics

    I have an exam in oceanography coming up and I'm having a little trouble understanding directions. For example in my review sheet he asks question like this: In what compass direction does the coriolis force act in the following situations: An object

    asked by Krysten
  163. chemistry

    what happens when you place sodium hydroxide and water into a calorimeter?

    asked by chels
  164. Nutrition

    Why do sucrose-fed rats (high carb diet) consume less rat chow (protein, fat, fiber) than the control rats?

    asked by Andrew
  165. Hum 230

    What are the similarities and differnce of ethnics and laws within an organization?

    asked by Teresa
  166. Math 30

    One of the terms in the expansion of (x+3)^7 is kx^5. How do I determine the value of k.

    asked by Rae
  167. math

    7[3m-(m+6)] G.T. -6(M-1)

    asked by Derek
  168. Math

    What is the solution of the interval notion? x less than 6 and x greater than -3

    asked by Bob
  169. psy

    How do you think historical and scientific perspectives on homosexuality may have shaped the way gay individuals perceive themselves? Address at least three perspectives discussed in the text.

    asked by Patiance
  170. math

    x+7 less than -4 or x+7 greater than 2 Solve the compound inequality

    asked by Michael
  171. trig

    which of the following radian measures would be a soultion to 2sin^2 2x-1=0 A)pi/4 B)pi/6 C)pi/8 D)pi/12

    asked by Kamron
  172. 11th grade

    a 45kilo roller-blader accelerates from rest to 4.5ms-1 in 3.0seconds. calculate the force requied by the roller-blader, if there are opposing friction forces of 40N acting? include a lbelled vector diagram in your answer.

    asked by Anonymous
  173. Computer Networking

    Mobile Training is a small training firm that offers mobile classrooms that come to your company and teaches office software,such as Word, Excel, Quickbooks, etc. You're asked to design a network for use in a training environment. It should be mobile, easy

    asked by Mary
  174. geography

    how have farmers in the poor part of south italy been helped with their living conditions. ive looked but cant find anything. thankyou

    asked by Vioklia
  175. Science Help

    When all of the hydrogen of the Sun is used up, it will turn into a _________?

    asked by Sara
  176. english: poem

    what makes "God's World" a powerful poem? i don't know please help i think it's powerful because it's descibing how the world looks like. i really don't know. need help God's World O world, I cannot hold thee close enough! Thy winds, thy wide grey skies!

    asked by larry
  177. Science - Research

    I am doing a review of the benefits and limitations to using genetic methods to research humans. I think the limitations will come from the fact that you need a blood sample. I'm not sure how to find about how much blood the scientist takes from the person

    asked by anony mouse
  178. social studies

    What would most likely happen if the Canadian government overruled the current laws protecting French language and heritage in the province of Quebec?

    asked by Sammy
  179. MATHS

    I am less than 500. I am divisible by 11 and 5. I have three digits. The sum of my digits is 14

    asked by Nicky
  180. Tennessee State University

    How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

    asked by Aaron
  181. HCA220

    How does blood clotting, immune response, allergic and hormone release interelate?

    asked by Sandra
  182. chemistry

    how many joules are formed when 3 moles oh CH4(g) react?

    asked by alexandra
  183. 7th grade

    what are the three emphatic forms of helpig verbs

    asked by Anonymous
  184. math

    Cola Company is offering its preferred customers a 25% discount on its most popular product normally listed at $40 each. a) What is the net price of each product to Cola Company's preferred customers? For full marks your answer(s) should be rounded to the

    asked by jena
  185. Geography

    How many immigrants does Canada need annually to prevent a decrease in its population? Please provide the source of the answer.

    asked by Krystal
  186. math

    What would be the right way to convert base 16 to base 10, such as for an example, 1BD base 16 to base 10?

    asked by Khyir
  187. Art

    what did Harold Rosenberg mean by "spectator vs view"

    asked by pat
  188. Tennessee State University

    How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

    asked by Aaron
  189. algebra

    (x-7)(x+2)=0

    asked by munchkin
  190. Math word problem

    Which would you rather be paid for 12 days - $100 per day for the 12 days or one dollar for the first day, $2.00 the second, $4.00 the third, $8.00 the fourth, etc., up to and including the 12th day?

    asked by Paula
  191. college/Algabra

    divide: (12x^3-42x^2-30x-3)/(6x+3)

    asked by Rebecca
  192. Advice on IB subjects

    Hey there all! Im desperate for some advice on my subjects at IB! I have decided on chem bio higher and english spanish standard. I am battling between Maths and Economics higher! I really like Maths and had decided to take it but now that I told people my

    asked by Daniel
  193. Math

    0.3(11x+4) greater than 2.1-(x+8)

    asked by Greg
  194. math

    Solve for the unknown: 8/52 = m/39

    asked by bev
  195. 12th grade

    i need help, can someone determine the quadrant in which the angles lie? pie/5 7pie/5 -pie/12 -2

    asked by ashley
  196. math

    how many ounces in a cup?

    asked by rick
  197. early childhood literacy

    the belief that children learn to read the same way that they learned to talk is the basis for the:

    asked by julie
  198. College Chemistry

    I don't have an answer.

    asked by Aaron
  199. math

    I need help making to t-charts. a. 1 if -1/2 is less than or equal to x less than or equal to 1. b. x^3 if x>1

    asked by Jennifer
  200. Math

    determine the number of solutions using determinants 3x-y=-6 2x=3y+2 I get: 3 -1 2 -3 D = -9-(-2)=-7 and 3 -6 2 2 D = 6-(-12)=18 solution set is (-7,18) when I plug them in to check, they don't come out right

    asked by Paula
  201. Tennessee State University

    How much heat is absorbed by the calorimeter if the temperature change is 12 C and the calorimeter constant (Heat Capacity) is 3.3 J/K?

    asked by Aaron
  202. algebra

    How would u solve D\d+2 - 2\2-d = d+6\ d^2-4 I got to D(d-2)(2-d) -2 (d+2)(d-2)=2d-d^2+12-6d How would you solve? Im confused

    asked by michelle
  203. Math

    Subtract: Simplify if possible x/x^2-16 - 6/x^2+5x+4

    asked by Anonymous
  204. English

    I forgot to include the following sentences which are part of the same summary. I really hope you can find time to check them, too.Thank you a lot. 7) The boxes of food had not been damaged by the water. He found many things, including biscuits and rum,

    asked by Franco
  205. drama

    If Tim Burton were to remake the film Cinderella, what do you think it would look like? Describe characters, actors who would play the characters, costumes, set, mood and setting.

    asked by becca
  206. Math

    Find f x g, g x f, and f x f f(x) = 3sqrt x-1 g(x) = x^3+1 For the f(x) the 3 is little above the sqrt sign. I do not understand how do find these.

    asked by Haanah
  207. math

    solve (3v+4)/(v-2)

    asked by Chad
  208. com 220

    Where can I find a graph or table that shows when black people was able to vote and the years?

    asked by Tracie
  209. college

    what dose harold rosenberg mean when talk about "spectator vs viewer".

    asked by pat
  210. math

    A cell phone company offers a contract for which the cost C, in dollars, of T minutes of telephoning is given by C=0.25(t-600)+71.95, where it is assumed the t greater than 600 minutes. What times will keep costs between $119.20 and $135.45?

    asked by Ryan
  211. AP Biology

    discuss the characteristics that make up mammalian genomes larger than prokaryotic genomes

    asked by sheer
  212. Pre-Cal

    Identify the following features of the graph of g(x) = (3/2)^x+2 A) Asymptotes B) Intercepts C) Increasing or decreasing I really do not know how to find these

    asked by Mark
  213. math

    0.3(11x+4) greater than 2.1 -(x+8)

    asked by Joan
  214. Math

    Solve. a+3 less than -12

    asked by Edward
  215. art

    In 1953 Robert Rauschenberg erased the drawing of a very famous abstract expressionist artist? and why?

    asked by pat
  216. english: poem

    can someone tell me what emotion is this poem is expressing? i read this over but couldn't figure out what this poem is expressing. God's World O world, I cannot hold thee close enough! Thy winds, thy wide grey skies! Thy mists that roll and rise! Thy

    asked by larry
  217. science

    what is muscular energy?

    asked by tyrone
  218. math 12

    without looking at cases Jamie just puts the CDs into cases. The cases belong to the CDs. how many different ways can the CDs be put in the cases? Is the answer 3!=6

    asked by Juliet
  219. us history

    Define ethnocentrism and explain how it has been used to justify European colonization of Native American cultures.

    asked by John
  220. maths

    e^x=3e^-x x=? Please help!

    asked by Anonymous
  221. Changes in the world

    What are atleast three or more changes in the world, that you'd like to see. One change that I would like to see is an end to child abuse, terrorism, and an end to animal abuse. I think that parents should be capable of leaning their children towards the

    asked by Sara
  222. uniport

    determine the area enclosed by the given boundaries: y=10-x^2and y=x^2+2.

    asked by mirian
  223. algebra

    when adding or subtracting rational exprssions, why do you need an LCD

    asked by sid
  224. Math

    Find two functions f and g such that (f x g)(x) = h(x). h(x) = 4 / (5x+2)^2

    asked by Hannah
  225. Social Studies

    What was Josef Stalin's scapegoat? Im assuming it is the Bolshevik's and he took care of them through mass purging.

    asked by Jay
  226. Language Arts

    Is obscured a verb, adjective, or both?

    asked by Anya
  227. Math

    set S is composed of the square of every element of the set {-5,5}. what is S?

    asked by Sophie
  228. Math-someone please help

    Write interval notion for the set {x -1 G.T. X G.T. -9} multiple choose A)[-9,-1) B)(-9,-1) C) (-9,-1] D) [-9,-1]

    asked by Holly
  229. college

    -2x>1/9

    asked by terry
  230. maths

    i need to factorise 4 cos squared theta + 2 cos theta - 1

    asked by adele
  231. sentences

    write a few sentences adout another famous afro american woman because march famous woman"s month

    asked by junior
  232. scott

    during the relative refactory peroid another impulse can be triggered by a ?

    asked by nat
  233. algebra 2

    3 radical 4x^2 time s radical 6x^4 times 3radical 9x

    asked by Kristina
  234. Math

    factor 2x^2-x+10

    asked by Chad