Questions Asked on
March 21, 2015

  1. Math check

    1.(2x)(10x) A)20x* B)12x C)20x^2 D)5x 2.-3m(m + 8) A)-3m^2 + 24 B)-3m^2 - 24m C)-24m D)-4m + 5* 3. 4d(2d-9) A)8d - 36d* B)-d C)-28d^2 D)8d^2 - 36d 4. (3x + 4)(x-2) A)3x^2 - 2x - 8 B)x - 8 C)3x - 2x - 8* D)3x^2 + 2x + 8 5. (2y - 1)(4y - 3) A)-2y + 3* B)8y^2

    asked by Oscar
  2. social studies

    1.which of the following do historians not consider a legacy of the Byzantine Empire? a)Justinians code: an organazation of roman laws*** b)Eastern orthadox church: a combination of Eastern culture and christianity c)cyrillic alphabet: a combination of

    asked by HOMEWORK
  3. social studies

    1.__________ introduced Europeans to Muslim inventions, such as the astrolabe that helped sailors navigate the seas. a)the Crusades, b)the Reconquista c)the Vikings d)the Magana Carta *** 2.In Athens the system of government became a direct democracy, in

    asked by need help real quick
  4. Calculus

    suppose that a tumor on a person's body is spherical in shape. if the radius of the tumor is 0.5cm the radius is increasing at the rate of 0.001cm per day. what is the rate of increasing volume of that tumor at that time?

    asked by Jam
  5. Math help check

    Which polynomial does the model represent? The model shows 1 black square block, 2 white thin blocks, 1 black thin block, 1 white small square block, 3 black small blocks. a –x³ + 2x² – 3x + 2 b. x² + x – 2 c. –x² – x + 2 d. –x² + x – 2

    asked by Oscar
  6. Chemistry

    A 10.0-mL solution of 0.300 M NH3 is titrated with a 0.100 M HCl solution. Calculate the pH after the following additions of the HCl solution: a) 0.00 mL b) 10.0 mL c) 20.0 mL c) 30.0 mL d) 40.0 mL **I know how to solve the problem but I keep getting

    asked by Sandhya
  7. science

    At 3:15 one afternoon, the temperature over the land reaches its highest value for the day — about 89°F. The temperature over the adjacent water is about 72°F. What would the expected weather conditions be at this time? A. Cloudy skies and a sea breeze

    asked by sam
  8. Chemistry

    The equilibrium constant, Kp, for the following reaction is 0.497 at 500 K: PCl5(g) PCl3(g) + Cl2(g) Calculate the equilibrium partial pressures of all species when PCl5(g) is introduced into an evacuated flask at a pressure of 1.46 atm at 500 K. PPCl5 =

    asked by Kayla23
  9. social studies

    1.__________ introduced Europeans to Muslim inventions, such as the astrolabe that helped sailors navigate the seas. a)the Crusades,*** b)the Reconquista c)the Vikings d)the Magana Carta 3.king granted land to lords who in turn granted land to knights

    asked by #school
  10. social studies

    The growing popularity of newspapers, magazines, and books in the United States during the 19th century contributed to which of these? The emergence of a uniquely American literary style The expansion of educational opportunities for women and minorities

    asked by Oscar
  11. Math

    Amanda Sabino's taxable income is $20,900.00. How much will she pay in state tax? Tax Table- First $2,000: 2.0% rate Next $4,000: 3.0% rate Next $4,000: 4.5% rate Over $10,000: 6.0% rate My answer-$1254 Am I correct? Thank you!!

    asked by N.
  12. math

    There are 32 more apples than oranges in a box. 3/5 o​f the oranges and 1/3 o​f the apples are overripe. If the number of overripe apples and the number of overripe oranges are the same, how many pieces of overripe fruit are there?

    asked by jessi
  13. math

    Point X is on side of line AC of triangle ABC such that

    asked by G
  14. maths

    The curved surface area of the cylinder is 1760cm^2.and its volume is 12320cm^3.Find its height.

    asked by devi
  15. PHI445

    Who is generally given credit for introducing fundamental human rights into the American political system? A) Thomas Hobbes B) John Locke C) Thomas Jefferson D) Alain Locke

    asked by Danelle
  16. Calculus 1

    Gravel is being dumped from a conveyor belt at a rate of 20 ft3/min, and its coarseness is such that it forms a pile in the shape of a cone whose base diameter and height are always equal. How fast is the height of the pile increasing when the pile is 7 ft

    asked by TayB
  17. Physics

    A motor boat is traveling at a speed of 2.4 m/s shuts off its engine at t=0 . How far does it travel before coming to rest after 3 seconds it's speed have dropped to half of its original value ? Assume that the drag force of the water is proportional to v

    asked by rush
  18. Medical physics

    A silver cube (density of silver is 10 g/cm3) with side length of 3 cm weighs more than an aluminium cube (density of aluminium is 2.96 g/cm3) with side length of 4 cm. The cubes are each suspended by a string and allowed to be completely immersed in two

    asked by JAMES
  19. Physics

    A motor boat is traveling at a speed of 2.4 m/s shuts off its engine at t=0. How far does it travel before coming to a rest if it is noted that after 3 seconds its speed has dropped to half of its original value? Assume that the drag force of the water is

    asked by Anonymous
  20. science

    5.At 3:15 one afternoon, the temperature over the land reaches its highest value for the day — about 89°F. The temperature over the adjacent water is about 72°F. What would the expected weather conditions be at this time? A. Cloudy skies and a sea

    asked by Angelina
  21. Educational Technology

    Which of the following are Boolean operaters? A.) and, or, not B.) to, for, from C.) a, and, the D.) is, are not

    asked by Kelsey
  22. Physics

    A rock is thrown directly upward from the edge of the roof of a building that is 35.3 meters tall. The rock misses the building on its way down, and is observed to strike the ground 4.00 seconds after being thrown. Neglect any effects of air resistance.

    asked by Thomas
  23. chemistry

    The Ka of hypochlorous acid (HClO) is 3.00×10-8 at 25.0°C. Calculate the pH of a 0.0385 M hypochlorous acid solution. a.1.41 b.7.52 c.-1.41 D.4.47 E. 8.94 I got B 7.52 but i feel like im wrong

    asked by danny
  24. maths

    I don't know how to solve this question.urgent A one side open cylindrical drum has inner radius 28cm.and height 2.1m.How much water you can store in the drum.Express in litres.(1 litre=1000cc.)

    asked by devi
  25. algebra

    Find a quadratic model for the set of values: (-2,-20), (0,-4), (4,-20). Show your work. y = -3x^2 - 4x + 3

    asked by Johnthyn
  26. math

    A box contained some red, blue, and green markers. For every 5 red markers, there were 2 blue markers. For every 3 blue markers, there were 5 green markers. a.​​Find the ratio of red markers to blue markers to green markers. b.​When 6 red markers

    asked by jessi
  27. Calculus 1

    If two resistors with resistances R1 and R2 are connected in parallel, as in the figure below, then the total resistance R, measured in ohms (Ω), is given by 1/R= 1/R1+ 1/R2. If R1 and R2 are increasing at rates of 0.3 Ω/s and 0.2 Ω/s, respectively, how

    asked by TayB
  28. chemistry

    The standard Gibbs free energy of formation of ammonia at 25 ° c is - 16.5kj per mole.calculate the value of equilibrium constant Kp at this temperature for this reaction. ( 5marks )

    asked by muli
  29. physics

    A 1 tonne caravan is being towed by a car which provides a constant drawbar pull of 40 N. If the resistance to motion is 20 N, calculate the acceleration of the car and the caravan.

    asked by baz
  30. Science

    I answered the questions, but I don't know if my choices are right. 1) Which of the following is an acidic pH? 6 7 8 800 None of the Above Answer: 6 ------------------------------------- 2) Which of the following is directly produced by photosynthesis?

    asked by Jane
  31. Physics

    So...the question is that a coil spring has a force constant of k = 4.0 lb/in. When the spring's axis is inclined at an angle 30 degrees form horizontal, a Weight = 2.0 oz ball is propelled to a height of 6.0 ft. By how much must the spring have been

    asked by Nora
  32. geography

    Bogotá, Colombia's capital city, is located where?

    asked by Anonymous
  33. math

    Rectangle WXYZ is drawn on triangle ABC, such that point W lies on segment AB, point X lies on segment AC, and points Y and Z lies on segment BC, as shown. If

    asked by G
  34. Chemistry

    I am having difficulty with balancing this acidic solution; I2+OCl{-} ----> IO3{-} +Cl{-} I get: I2 = OCl{-} +2H2O -----> IO3{-} +Cl{-} + 3H{+} The charges don't balance... What am I doing wrong?

    asked by Stacie
  35. Shakespear

    Read the exchange between Romeo and Nurse in Act II, scene iv of Romeo and Juliet. Romeo: Bid her devise Some means to come to shrift this afternoon; And there she shall at Friar Laurence’ cell, Be shriv’d and married. Here is for thy pains. Nurse: No,

    asked by Danny G
  36. Physics

    a 2.00 kg object has a velocity of 4.00i -3.00j m/s. What is the kinetic energy at this moment? What is the net work done on the object if its velocity change 6.00i +2.00j m/s

    asked by Anonymous
  37. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to

    asked by Isabel
  38. chemistry

    The Ka of hypochlorous acid (HClO) is 3.00×10-8 at 25.0°C. Calculate the pH of a 0.0385 M hypochlorous acid solution. A.1.41 B.7.52 C.-1.41 D.4.47 E.8.94 I chose B

    asked by danny
  39. Math

    1. Michael Koepler received his bank statement and canceled checks for October. His previous balance was $998.41. In October, he deposited $177.00 and wrote checks totaling $378.00. What was the ending balance for that month? MY ANSWER- I am unsure if the

    asked by N.
  40. Quick English check

    'Cause I've had the time of my life And I owe it all to you I've been waiting for so long Now I've finally gound someone To stand by me We saw the writing on the wall As we felt this magical fantasy 4. Read stanza two... The tone of this stanza can be best

    asked by Anonymous
  41. chemistry

    net ionic equation for reaction between copper carbonate and the hydroiodic acid

    asked by Jeff
  42. life orientation

    show the link between intrapersonal conflict and intiating relationship

    asked by precious
  43. physics

    The five engines of the first stage of a launch vehicle provide a total thrust of 31.5 x 106 newtons to the space vehicle (launch vehicle and spacecraft). Assuming the acceleration is uniform, calculate the acceleration of the 2.764 x 106 kg space vehicle

    asked by baz
  44. maths

    A copper solid cylinder of radius 14 cm and height 10cm is meter and recast into cylindrical wire of diameter 4mm.find the length of copper wire?

    asked by om
  45. ela

    1. what is the ordered pattern of rhymes at the ends of lines of a poem or a verse called?

    asked by karen
  46. Physics

    A 130kg mail bag hangs by a vertical rope 3.9m long. A postal worker then displaces the bag to a position 2.2m sideways from its original position, always keeping the rope taut.

    asked by Kevin
  47. History Check Please

    1. Annie Webb Blanton accomplished all of the following EXCEPT (1 point) found Delta Kappa Gamma. serve as a professor at the University of Texas in Austin. become Texas Secretary of State. serve two terms as superintendent of public instruction. 2. Texas

    asked by SmartyPants
  48. math

    The arrow is spun several times until it stops at a number 4. Find the probability that this happens on the third spin.

    asked by dana
  49. Physics

    A 130kg mail bag hangs by a vertical rope 3.9m long. A postal worker then displaces the bag to a position 2.2m sideways from its original position, always keeping the rope taut.

    asked by Kevin
  50. Chemistry

    You are titrating 50ml of a 0.02M solution of Zn^+2 at pH 7 with 0.05M solution of EDTA. What is the [Zn+2] after 20mL of EDTA has been added? Kzny=3x10^16

    asked by Bear
  51. Chemistry

    At 500 degrees celsius, K for the formation of ammonia from nitrogen and hydrogen gases is 1.5x10-5. N2(g)+3H2(g)->/

    asked by Jessica
  52. Physics

    a car goes over a circular hill of 50m radius at a constant speed of 20m/sec . What is the force of the car on the 600N driver at the top of the hill.?

    asked by Anonymous
  53. statistic

    Ten individuals went on a low–fat diet for 12 weeks to lower their cholesterol. Evaluate the data below. Do you think that their cholesterol levels were significantly lowered? (Show all your work i.e. Ho and Ha, p-value, conclusion in words)

    asked by etoile
  54. chemistry

    Which of the following acids is expected to be the strongest acid? CH2F-COOH CF3-COOH CH3-COOH CCl3-COOH CBr3-COOH i chose ccl3-cooh

    asked by danny
  55. maths!!!!!!

    The 6th and 13th term of a geometric progression are 24 and 3/16 respectively.Find the sequence.

    asked by Raksha
  56. Math

    Kool Klothes has determined that the revenue function for selling x thousand pairs of shorts is R(x) = -5x^2 + 21x. The cost function C(x) = 2x + 10 is the cost of producing the shorts. a) How many pairs of shorts must the company sell in order to break

    asked by Christine
  57. Intro statistics

    A bag contains 7 red, 6 orange, and 9 green jellybeans. What is the probability of reaching into the bag and randomly withdrawing 11 jelly beans such that the number of red ones is 7 the number of orange ones is 1 and the number of green ones is 3?

    asked by Anonymous
  58. Chemistry 2

    The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M.

    asked by Mariah
  59. Pre-Calculus

    Rewrite each quadratic equation in the form ax^2+bx+c=0. Then,use technology to solve each by graphing. ROund you answers to the nearest hundredth, where necessary. a) 3x^2+30 = -19x Answer: 3x^2+19x+30 Roots: x = -3 b) 6x^2= 25x-24 Answer: -6x^2+25x-24=0

    asked by Lucina
  60. math - URGENT

    I'm don't understanding how to solve this question: The graph of a line passes through the x-intercept of y-20=2/11(x-31) and is perpendicular to the line y=1/7x+7 . The equation of the line, written in Slope-Point form, is y-p = m(x-q). what is the value

    asked by Joy
  61. life science,business studies,tourism and maths literacy

    What can I become with this subjects?

    asked by calvin
  62. mathematical physics

    Using Green's theorum evaluate the integral [ integration from c x^2ydx-xy^2dy] where c is the closed curve along the circle. x^2+y^2 = 4

    asked by gourav
  63. Physics

    A pendulum string has a length l = 4.0 ft. When the pendulum ball is released at 90 degrees to the vertical, it will swing down. A nail is located distance d below the point of suspension of the pendulum. Show that d must be at least 0.6l if the ball is to

    asked by Nora
  64. algebra

    1. A rectangular wooden frame has side lengths 5x and 7x + 1. The rectangular opening for a picture has side lengths 3x and 5x. -What is the area of the wooden part of the frame? Write your answer in factored form. -How can drawing a diagram help you solve

    asked by SkatingDJ
  65. Math

    Hello I need some help with these questions. A survey of 115 children found that 39 liked The Little Mermaid 43 liked 101 Dalmatians 56 liked Mickey Mouse 7 liked The Little Mermaid and 101 Dalmatians 10 liked The Little Mermaid and Mickey Mouse 16 liked

    asked by N.
  66. science

    Two insulated beakers contain different amounts of identical liquids. Beaker A contains twice as much liquid as Beaker B. The temperature of Beaker A is 80°C. The temperature of Beaker B is 40°C. An aluminum rod connects the beakers, and the system is

    asked by Isabel
  67. application of differential equation

    An object of mass 100g is thrown vertically upward from a point 60cm above the earths surface with an initial velocity of 150cm/sec. It rises briefly and then falls vertically to the earth, all of which time it is acted on by air resistance that is

    asked by maria
  68. critical thinking

    A _______ is what you would write after you read an essay, analyze it, and write about some aspect of it. A. response paper B. classification essay C. pattern of development D. study guide my answer is a.

    asked by Saddia
  69. Math

    A document that measures 28 centimeters by 20 centimeters is enlarged by a scale factor of 3/2. What are the dimensions of the enlarged documents?

    asked by Erica
  70. ELA

    in the poem "road not taken" what has worn the roads about the same?

    asked by lulu
  71. chemistry

    A 300 mL solution of 0.0500 M HCl is titrated with 1.00 M KOH. How many mL of the KOH solution will be needed to reach the equivalence point of this titration? A.5 mL B.10 mL C.50 mL D20 mL E15 mL The answer i got was E. 15ml

    asked by danny
  72. math _ HELP !!

    two points on the graph of a linear functions are (-3,5) and (-1,4). Determine the equation of the function in slope form ? can someone help explain in step ? Thanks

    asked by emily
  73. chemistry

    All of the following acid-base pairs are examples of buffers EXCEPT: (Question from "Cracking the MCAT, 2010-2011 edition" by The Princeton Review) HCl/NaCl CH3CO2H/NaCH3CO2 HF/NaF H2CO3/NaHCO3 I chose ch3co2h/nach3co2

    asked by danny
  74. life science,tourism,business studies,maths literacy

    What can I become with this subjects?

    asked by calvin
  75. Chemistry 2

    The equilibrium constant, Kc, for the following reaction is 1.54E-2 at 643 K. 2HI(g) H2(g) + I2(g) When a sufficiently large sample of HI(g) is introduced into an evacuated vessel at 643 K, the equilibrium concentration of I2(g) is found to be 0.351 M.

    asked by Mariah
  76. algebra

    if someone withdrew $237 from savings account that totaled $3,000 what percent of money is left in the account?

    asked by Slimjim
  77. critical thinkng

    The unique way each person approaches assignments, interprets instructor comments, and best devises plans for completing coursework is known as A. learning style. B. best student path. C. learning to discipline. D. academic development. my answer is a.

    asked by Saddia
  78. critical thinking

    Which of the following is a false statement about a basic dictionary? A. A basic dictionary is organized in alphabetical order. B. Various types of words are included a basic dictionary. C. The pronunciation of words is provided in a basic dictionary. D.

    asked by Saddia
  79. critical thinking

    In the following sentence, identify the prepositional phrase, and tell whether it acts as an adjective or adverb. The children found the pictures in the book interesting. End of exam A. the pictures in; adjective B. The children; adjective C. in the book;

    asked by Saddia
  80. Math

    1. Rishi ram obtained an installment loan for $3,000.00. He agreed to repay the loan in 6 monthly payments. His monthly payments is $516.50. What is the APR? MY ANSWER=0.33% 2. Tim Newman took out a simple interest loan of $1500 at a 10 percent interest

    asked by N.
  81. Math

    Skate boarding boys= 2 girls=1 What percentage of the total students chose skateboarding? A. 10% B. 20% C. 30% D. None of these Is the answer D? Thank you

    asked by Anonymous
  82. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 85°C. The temperature of Beaker B is 40°C. A metal rod connects the beakers. Five minutes later, the temperature of Beaker A is 75°C and the temperature

    asked by Isabel
  83. science

    The two systems shown below are identical except for the rod connecting the two beakers. Initially the temperatures of the beakers are as follows: Beaker A = 88°C Beaker B = 42°C Beaker C = 88°C Beaker D = 42°C Four minutes later the temperatures are

    asked by Isabel
  84. chemistry

    You need to determine the pKa of a weak, monoprotic acid. You add 0.500 moles of the acid to 1.00 L of water. The resulting pH was 1.87. What is the pKa of this weak acid? You may ignore the autoionization of water. 2.74 3.43 5.38 2.01 1.87

    asked by danny
  85. physics

    If a mass of gasoline occupies 70.01 at 20°C, What is the volume at 35°C?

    asked by charlotte
  86. eng.Economic

    deposits $1,000 now, $2,000 2 years from now, and $5,000 5 years from now into a fund paying 12% compounded semiannually. a. What sum of money will be accumulated at the end of sixth year? b. What equal deposits of size A, made every 6 months (with the

    asked by sss
  87. physics

    If, after rotating for some time at constant angular velocity of 72 rad/s, brakes are applied to the flywheel producing retardation of 4 rad/s2 , determine the time taken to reduce its angular velocity to 40 rad/s.

    asked by baz
  88. physics

    A spring balance has a scale that reads from 0to50 kg.The length of the scale is 20cm.A body suspended from this balance,when displaced & released, oscillates with period of 0.6 s.What is the weight of the body?

    asked by shan
  89. sicence

    A body of mass 5.0kg initially at rest from height of 4.0m.calculate its final velocity just before it hits the ground

    asked by chidimma nwachukwu
  90. math

    ABC is an isosceles triangle inscribed in a circle. If AB and AC equal to 2.5cm and BC is 14cm find the radius of the circle

    asked by Anonymous
  91. critical thinking

    When developing strategies for writing, which of the following is not a good strategy? A. Use school support and guidance B. Rely more on your own experience than on the readings assigned. C. Focus on learning and the process of learning. D. Plan for more

    asked by Saddia
  92. Calculus 1

    Water is leaking out of an inverted conical tank at a rate of 12,000 cm3/min at the same time that water is being pumped into the tank at a constant rate. The tank has height 6 m and the diameter at the top is 4 m. If the water level is rising at a rate of

    asked by TayB
  93. History Check Please Reed

    Before the Civil War most cattle were not (1 point) on the open range. on South Texas ranches.* slaughtered for their hides. shipped to cities in the northeast. 6. After the Civil War, (1 point) many plantations were divided into smaller farms.*

    asked by SmartyPants
  94. computer code

    Create a Flowchart and pseudocode. Create a class whose main method creates three arrays. The first array will contain five kinds of flowers - petunia, pansy, rose, violet, and carnation. The second array will contain the cost of each flower, respectively,

    asked by Wayne
  95. maths

    the forth term of an A.P is 11 and the sixth term is 17 find the tenth term?

    asked by cabdiqaadir
  96. math -ans check

    two points on the graph of a linear function are (-3,5) and (-1,4). Determine the equation of the function in slop-point form. ans: m=-1/2 I pick a point (-1,4) y-y1=m(x-x1) y-4=-1/2(x-(-1)) y-4=-1/2(x+1) Thank you ^^

    asked by em
  97. chemistry

    What is the pH of 500 mL of water that had 0.00150 grams of NaOH added to it? The units are pH units with an error interval of 0.1 units. 0.00150 divided by 40NaOH 3.75e-5 divided that by 500= 7.5e-8 -log7.5e-8 =7.12 im lost on the last step

    asked by danny
  98. Help with Psychology regarding Positive Correlatio

    Which of the following is an example of a positive correlation? a) The crime rate increases as the income level decreases. b) As education levels decrease, the crime rates increase. c) The crime rate decreases as city population decreases. d) None of the

    asked by Hikaru
  99. chemistry

    Calculate ▲U,▲H, ▲S, ▲A and▲G in expanding 1 mole of ideal gas at 25 ° c from 10 to 100 dm cubed. (5marks )

    asked by Joseph
  100. physics

    the mass of the sun is 2×10^30kg.the mass of a proton is 2×10^-27kg.if the sun was made only of protons.calculate the number of protons in the sun?

    asked by Anonymous
  101. chemistry

    The average swimming pool has a volume of about 28,000 gallons. Suppose a swimming pool was filled with pH 7.00 water. However, you need to adjust the pH to 4.75. How much acid pool acid (which is 1.00 M HCl) do you need to add to the pool? The units are

    asked by danny
  102. physics

    in a game of billiard , a collision occurs between two marble balls of different mass. one ball 400g is initially at rest. After the collision, this ball acquires a velocity of 1.40m/s at an angle of 37 degrees from the original direction of the motion of

    asked by Zobia
  103. eng.Economic

    Marvin borrows $2,500 from the Shady Dealings Loan Company. He is told the interest rate is merely 2%/month and his payment is computed as follows: Loan period = 30 month Interest = 30(0.02)($2,500) = $1,500 Credit investigation and insurance = $50 Total

    asked by sss
  104. mathematical physics

    Determine the directional derivative of phi =xy^z in the direction i^-2j^+2k^ at the point (3, 1, -1)

    asked by gourav
  105. Quick English check

    Now with passion in our eyes There's no way we could disguise it secretly So we take each other's hand Because we seem to understand the urgency In the third stanza, the word disguised means- A. Inportance B. Dress up as C. Hide D. Change appearance I

    asked by Anonymous
  106. mathematical physics

    Calculate the work done by a force vector F = y^2z^3i^+2xyz^3j^+3xy^2z^2k^ in moving an object along the path defined by the parametric equation x = t, y = t, z = t between the points A( t =0 ) and B( t = 1).

    asked by gourav
  107. math

    Solve the initial value problem d^2x/dt^2+2dx/dt-3x = 0, x(2π) =1, x(2π) = 13

    asked by gourav
  108. geometry

    Construct an equilateral of altitude 5.5 cm

    asked by Anonymous
  109. physics

    How many circus balloons will it take to lift a 80.0 kg person? The pressure is 1.00 atmospheres. The temperature is 298 K. The air is composed of 20.0% oxygen and 80.0% nitrogen. Each balloon is a perfect sphere, 40 cm in diameter, filled with helium gas

    asked by Van355@
  110. chemistry

    Which of the following chemicals are bases or can behave like bases? You may select more than one compound. KOH PO43- NH3 F-

    asked by danny
  111. Algebra

    Find X. (X+a)(X-b)=X^2+5

    asked by Yin
  112. math

    For what values of k does the line y= x + k pass through the circle defined by x^2 + y^2 = 25 at: a) 2 points b) 1 point c) 0 points

    asked by Elenor
  113. Science

    hi could you please help with the following question: In humans, free ear lobes is dominant to attached ear lobes. A male who is pure breeding for free ear lobes marries a woman who is pure breeding for attached ear lobes. What type of ear lobes will the

    asked by Lisa
  114. Genetics (science)

    Please answer my science question (in detail if possible) Q: in rats the gene for black hair colour is dominant over the gene for brown hair colour. Draw a plunnet square and use it to predict the fractions of both the genotypes and phenotypes produced

    asked by Chloe c
  115. PHI445

    Thomas Hobbes believes that most people in the state of nature would prefer: A) stay there because no one interferes with anyone else. B) wish to leave it and join society because it is freer. C) wish to leave it and join society because it is more secure

    asked by Danelle
  116. chemistry

    If 350 grams of pure fe2o3 is used, how grams of can be produced? the reaction is: fe2+3c---2fe+3co

    asked by wen
  117. chemistry

    Distinguish clearly between ▲G for a reaction and ▲S of the same reaction. Which of the two is used to predict whether a reaction is spontaneous? why? (4 marks)

    asked by Joseph
  118. chemistry

    Calculate the volume of NaOH 0.1M that needs to be calculated to be added to a 30ml o-phosphoric acid 0.1 in order to prepare solutions of pH 7.5 and pH 6.9? pKa3= 2.15; pKa2=7.2; pKa1 = 12.1

    asked by Adeola
  119. Critical thinking

    In the following sentence, which words are used as adjectives? The golden rays of the bright sun reflected off the clear waters of the calm lake. A. The, of, in, clear, and calm B. The, golden, the, bright, the, clear, the, and calm C. Golden, rays, clear,

    asked by Saddia
  120. critical thinking

    Which of the following is not a primary sentence pattern for asking questions in English? A. Helping verb, subject, main verb B. Subject, action verb, direct object, helping verb C. Adverb, verb, subject D. Adjective/pronoun, subject, interrogative verb my

    asked by Saddia
  121. Math, Intergration

    C(T)=0.78125-0.5e^(-0.64T) (T+1.5625) Using this equation, I don't understand 'Intergration by parts' to show this and what it means Any help is appreciated!

    asked by Amy L
  122. math

    If a power failures occur according to a poisson distribution with an average of 3 failures every twenty weeks,calculate the probability that there will not be more than one failure during a particular week.

    asked by gourav
  123. mathematical physics

    For any two vectors u^ and v^ show that: (u^.v)^2-[(u^×v^)].u^= u^2v^2

    asked by gourav
  124. physics

    The throttle of an electric train is shut off at a speed of 48 km/h. The total mass of the train is 81 tonne and the combined resistance force is 90 newtons per tonne. Find how long it will take for the train to stop.

    asked by baz
  125. critical thinking

    A common term for photographs, cartoons, advertisements, illustrations, drawings, PowerPoint slides, and graphics used to help present information is A. representers. B. ocular enhancements. C. sight perks. D. visuals. my answer is d.

    asked by Saddia
  126. mathematical physics

    Obtain the curl of the following vector field in spherical polar coordinates : vector A = x( xi^+yj^+zk^)

    asked by gourav
  127. English

    what is the story behind the monkey's paw- how does it link to fate how does the writer present this? Can you please answer this question using this quote: " "It had a spell put on it by an old fakir," said the sergeant-major, "a very holy man. He wanted

    asked by Abdi dj
  128. application of differential equation

    somebody please help me find the solution totally lost.... An object of mass 100g is thrown vertically upward from a point 60cm above the earths surface with an initial velocity of 150cm/sec. It rises briefly and then falls vertically to the earth, all of

    asked by maria
  129. mathematical physics

    Using Divergence theorum evaluate the flux integrate from s vector A.vector D's where A =xi^+yj^+zk^ and s is the complete surface of the hemisphere which has its centre at the origin and the origin and a radius of 6 units.

    asked by gourav
  130. maths

    ABC is an isosceles triangle inscribed in a circle. If AB and AC is 2.5cm and BC is 14cm find the radius of the circle

    asked by Anonymous
  131. Math

    Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y

    asked by Heather
  132. chemistry

    Which of the following chemicals are strong bases? You may select more than one compound. CH2=CH2 Ca(OH)2 NH3 RbOH

    asked by danny
  133. chemistry

    Which of the following chemicals are bases or can behave like bases? You may select more than one compound. Cu2+ RbOH CH3COO- Br-

    asked by danny
  134. Analytical Chemistry

    Indicate whether the following half-cells would act as an anode or a cathode when coupled with a S.H.E. in a galvanic cell. Calculate cell potential: Pt/O2(800 torr)/HCl(2.5E-5 M) I have not figured out a way to approach this problem. I know the nernst

    asked by Steve
  135. English check

    Which quote believes that all of us have the ability to love? A. "Love is a binding force between two things that compels them to come together..." B. "Yet we do have the capacity to love not only other humans, but animals as well." C. "love would not

    asked by Anonymous
  136. math

    The function h(t)= 2 + 50t - 1.862t^2, where h(t) is the height in metres and t is the time in seconds, models the height of a golf ball above the planet Mercury's surface during its flight. a) What is the maximum height reached by the ball b) How long

    asked by Rose
  137. Economics

    China's slowdown Jan 20th 2015, 10:26 by S.R. | SHANGHAI MUCH of the analysis of China’s 2014 GDP data, which the government published today, has focused on the economy’s slowdown That is, on one level, understandable. Growth of 7.4% was China’s

    asked by Remi
  138. MATH!!!

    What is the equation for the line that passes through W(-10,-9) and is parallel to y=5/32x-10 ? Thank you....

    asked by Joy
  139. CDA

    One suggested way to foster both prosocial behavior and self-esteem is the use of A. reasoning. B. verbal aggression. C. role modeling. D. time-out. I choose c

    asked by liliana
  140. Algebra

    Find result of imaginary unit i. 1. (3+4i^259)(2-3i^-22)=? 2. (-i^-38)/(5-4i^-27)=?

    asked by Yin
  141. English

    Can check see if these the right way to do in text citations.when “you’re ready to go do something else’’ (Jordan).

    asked by P
  142. math

    3 times 2 and 2/5

    asked by jeff
  143. English

    Is the right way to do in text citations.when “you’re ready to go do something else’’ (Jordan).

    asked by P
  144. Algebra

    A wire of length L is cut into two pieces of length X and Y respectively, with Y>X. These pieces are then used to form an upper case "L". If Y/X= (X+Y)/Y, determine the values of X and Y in terms of L.

    asked by Yin
  145. differencI also equation

    An object of mass 100g is thrown vertically upward from a point 60cm upabove the earth's surface with an initial velocity of 150cm/sec

    asked by auguste nande
  146. social studies

    Explain the importance of accommodations to the tourism industry

    asked by steve
  147. urban management

    To prevent settling of organic matter a Vs should be

    asked by Anonymous
  148. chemistry

    Hey, I'm struggling a bit with this thermal energy question: One major cost in the brewing history is the cost of energy used in running a plant. Much of the heating plant is accomplished by the cooling and or condensing of steam. When 50.0 mg of griest is

    asked by Yana
  149. Algebra

    Evaluate¡Ì7x(¡Ìx - 7¡Ì7)Show you work. My answer x¡Ì7 ¨C 49 ¡Ìx

    asked by Johnthyn
  150. math

    Calculate the mean value for the number of heads appearing in a simultaneous throw of 3 coins.

    asked by gourav
  151. physics

    Show that the angular momentum L=r¡Áp vector is an axial vector

    asked by gourav
  152. Math

    Hi I'm having a bit of trouble if anyone is able to help, thanks! Using the substitution u =1-2t^2, show that A = -1/4 ∫_1^(-7)▒e^u du

    asked by Simon
  153. science chemistry

    Calculate the relative atomic mass of Limestone CaCo3 Methanol CH3oH Sulphric acid Ca(No3)2. (Ca=40.1,C=12,O=16,H=1,S=32).

    asked by compound
  154. Debate

    I need help finding and article or news story to help my argument that Refusing to accept EBT cards is prejudicial. And that law makers should not banned EBT cards in fast food restaurants for the many card holders.

    asked by Josh
  155. mathematical physics

    Show that the angular momentum vector(L)=vector(r)×vector(p) vector is an axial vector

    asked by gourav
  156. physics

    A wheel has turned through 120 revs in 10 s after starting. find the angular acceleration.

    asked by baz
  157. mathematical physics

    Given two vector function vector a(t)=(2t+3)i^+(t^2-2)j^+tk^ and vector b(t)=(4-t)i^+(3t^3+1)j^+(2t-1)k^, determine the derivative of vector a(t).vector b(t) at t=1.

    asked by gourav
  158. physics

    Why is parallax method not useful for measuring the distances of stars more than 100 light years away?

    asked by shan
  159. mathematical physics

    Determine whether the following vector field is incompressible or irrotational at the point (0, 1, 2) vector F =[x/x^2+y^2+z^2]i^ +[y/x^2+y^2+z^2]j^+[z/x^2+y^2+z^2]k^

    asked by gourav
  160. math

    Assume that on a weekday one telephone number out of every ten being called is busy. If 6 randomly selected numbers are called what is the probability that at least three of them be busy?

    asked by gourav
  161. mathematical physics

    Determine the scale factors for an orthogonal coordinate system ( s, t, v ) whose coordinates are related to the cartesion by following equations: x = 2st:, y = s^2-t^2:, z = v Also write down an expression for the square of the arc element.

    asked by gourav
  162. English

    I wanted start fresh on the Goetta one that I got help with last night and today. I was having hard when you guys were explain it me and get easily got frustrated.

    asked by m
  163. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to

    asked by Isabel
  164. science

    The two insulated beakers contain equal amounts of identical liquids. The temperature of Beaker A is 80°C. The temperature of Beaker B is 50°C. A copper rod connects the beakers. The system is then left alone for several hours. What would you expect to

    asked by Isabel
  165. math

    adult tickets are $17, student tickets are $9. how many adult and student tickets need to be sold to make a profit of $4,400?

    asked by Anonymous
  166. CDA

    The way it's used in childcare today, time-out A. should last for at least 30 minutes. B. should completely isolate the child from the rest of the class. C. is often misused. D. is the best way to discipline children of all ages. My answer is c

    asked by Kaleisha
  167. English

    For a in-text citation do you place a source without a author with quotations and parentheses?

    asked by Woody
  168. English

    I have question to do I have reword the sentence because it give the definition for food the Goetta, which is made from mixed pork, beef, oaks and seasonings, packaged into a roll and then fried and severed hot. I don't want it to turn up as plagiarism in

    asked by m
  169. Math

    Hi! My teacher wanted me to sketch the graph of solution set of each system. For the first question, she wants me to use the slope intercept form and the second question using a table of values, but, I'm a little lost. Can someone help? Thanks! 1.) 3x + 2y

    asked by Heather
  170. chemistry

    I'm adding these three atomic weights (40.1+12.0+48.0) together, and I got 100.1 How can I round my answer to three significant figures? thank you!

    asked by ally
  171. English

    how do I analyze a story using tactics such as Formalist Biographical Psychological Historical Marxist New Historical Cultural Gender Feminist GLBTBC Mythology Reader response I have to analyze the story using any one of the tactics listed above.

    asked by NJ
  172. CDA

    Children are more likely to lose control when they're A. bored. B. listless. C. tired. D. active My answer is A

    asked by Kaleisha
  173. MATH

    for what value(s) of k does the equation kx - 10 - 5x^2 have: a) one real solution b) two distinct real solutions c) no real solution

    asked by Eloise
  174. English

    For in text-citation with no author is this the right way to do this. I look it up Purdue Owl (“Pizza”).

    asked by m
  175. homework

    Which one of the following statements is an example of a clear message to a child? A. "Cleanup time. Hurry up." B. "What a rude thing to do!" C. "Stop that right now, and get ready for a nap." D. "Take your dirty dishes to the kitchen." I choose D

    asked by liliana
  176. math

    What would be the final cost of a theater ticket that cost $6.00 and a discount rate of 15 percent was added to it?

    asked by noah ater
  177. social studies

    give a brief overview of accommodation, transportation, food and beverage in the tourism sector

    asked by nico
  178. English

    Is this how would do a in text citation?“a dish of coarsely ground corn kernels boiled with water”

    asked by P