Questions Asked on
February 25, 2012

  1. Chemistry please help

    Methanol (CH3OH) can be made by controlled oxidation of methane. CH4(g) + 1/2 O2(g) ¨ CH3OH(g) I found that the ƒ¢H‹ is -126.4kJ/K and the ƒ¢S‹ is -51.2, and the ƒ¢G‹ at 298 K is 111kJ Yet how do you Calculate the temperature at

    asked by janvi
  2. Physics

    Two identical +9.0 µC point charges are initially spaced 5.2 cm from each other. If they are released at the same instant from rest, how fast will they be moving when they are very far away from each other? Assume they have identical masses of 1.0 mg.

    asked by Jon
  3. Trigonometry (Law of Sine)

    Fire towers A and B are located 10 miles apart. They use the direction of the other tower as 0°. Rangers at fire tower A spots a fire at 42°, and rangers at fire tower B spot the same fire at 64°. How far from tower A is the fire to the nearest tenth of

    asked by Alianne
  4. College Physic I

    A space probe is traveling in outer space with a momentum that has a magnitude of 4.99 x 107 kg·m/s. A retrorocket is fired to slow down the probe. It applies a force to the probe that has a magnitude of 1.87 x 106 N and a direction opposite to the

    asked by Angela
  5. Trigonometry (Law of Sine)

    Fire towers A and B are located 10 miles apart. They use the direction of the other tower as 0°. Rangers at fire tower A spots a fire at 42°, and rangers at fire tower B spot the same fire at 64°. How far from tower A is the fire to the nearest tenth of

    asked by Alianne
  6. accounting

    Jack Shellenkamp owns and manages a computer repair service, which had the following trial balance on December 31, 2011 (the end of its fiscal year). BYTE REPAIR SERVICE Trial Balance December 31, 2010 Cash $8,000 Accounts Receivable 15,000 Parts Inventory

    asked by Will
  7. Physics

    A mass of 2.2kg is placed on a stiff vertical spring which has a spring constant of 950n/m. The object is then pressed against the spring until it has been compressed a distance of 77cm. The mass is then released and is allowed to be thrown up into the

    asked by Rob
  8. Chemistry

    A system at equilibrium contains I2(g) at a pressure of 0.23 atm and I(g) at a pressure of 0.24 atm. The system is then compressed to half its volume. Find the pressure of I2 when the system returns to equilibrium. Find the pressure of I when the system

    asked by Anjali
  9. physics

    A small sphere with a mass of 2.00×10−3 g and carrying a charge of 5.20×10−8 C hangs from a thread near a very large, charged insulating sheet, as shown in the figure . The charge density on the sheet is −2.40×10−9 C/m^2. Find the angle of the

    asked by canan
  10. Physics

    Because of the Earth's rotation, a plumb bob does not hang exactly along a line directed to the center of the Earth. How much does the plumb bob deviate from a radial line at 35.1° north latitude? Assume the Earth is spherical.

    asked by Bill
  11. Chemistry

    What species is classified as an Arrhenius base?

    asked by Christian
  12. physics

    A car is sitting at the top of an inclined plane, which is 5.2 meters long and meets the horizontal at an angle of 12 degrees. The cart is then allowed to roll to the bottom of the incline. What will be the velocity of the cart at the bottom of the

    asked by joe
  13. Physics

    A sled which has a mass of 45kg is sitting on a horizontal surface. A force of 120 N is applied to a rope attached to the front of the sled such that the angle between the front of the sled and the horizontal is 35 degrees. As a result of the application

    asked by jo
  14. math

    Write expressions for other five trigonometric ratios for each acute angle: a. csc(theta 0) = a/b b. sec(beta B) = x+1/x-1, x not equal 1

    asked by amber
  15. AP CHEMISTRY

    Write the formula for each of the following compounds, being sure to use brackets to indicate the coordination sphere. 1) bis(bipyridyl)cadmium(II) chloride 2)potassium tetrabromo(ortho-phenanthroline)- cobaltate(III)

    asked by DAN
  16. physics work and energy

    A mass of 45kg is sitting at the bottom of an incline plane which is 5.5m long has a coefficient of friction of .65 and which meets the horizontal at an angle of 32deg. A force of 812N is applied to the mass so as to accelerate the mass up the inclined

    asked by James
  17. Physics - still confused -Please help

    In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation). The line is reeled in at constant speed. Determine the angular speed of the reel in rad/s. Thank you.

    asked by Nilan
  18. World History

    1. The purpose of American and European imperialism in the Pacific was mainly to gain a. markets for manufactured products b. coaling stations and naval bases c. sources of raw materials d. places for surplus populations I'm not sure between A and C 8.

    asked by mysterychicken
  19. Physics

    A spring is mounted horizontally. A crate which has a mass of 8.5kg is pressed against the spring with a force of 350N. As a result the spring is compressed a distance of 82.0cm. The mass is then released and is allowed to slide along the horizontal,

    asked by Rob
  20. calculus

    the base of a solid is the region between the curve y=2 square root of sin x and the interval [0,pi] on the x-axis. the cross-sections perpendicular to the x-axis are equilateral triangles with bases running from the x-axis to the curve as shown in the

    asked by diny
  21. Physics

    a 25 kg box is released from rest on a rough inclined plane tilted at an angle of 33.5 degrees to the horizontal. The coefficient of kinetic friction between the box and the inclined plane is 0.200. a. determine the force of kinetic friction acting on the

    asked by Allie
  22. Geometry

    Write a two column proof. Given: angle STV is congruent to angle TVU, angle STU is congruent to angle UVS. Prove: Angle SVT is congruent to angle UTV.

    asked by Lina
  23. Chemistry

    Calculate the [OH-] for a solution in which [H+] is 1000 times greater than [OH-]? and will the final result be acidic, basic, or neutral?

    asked by Colin
  24. Math

    Robin cross- stitches bookmarks and wall hangings . A bookmark takes her 1 1/2 days, and a wall hanging takes her 4 days. Robin recently spent 18 days cross- stitching 7 items. Solve the system of equations to find the number of bookmarks b and the number

    asked by Carly
  25. College Physic I

    A student (m = 66 kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.04 s. The average force exerted on him by the ground is +18000 N, where the upward direction is taken to be the

    asked by Angela
  26. Calculus. I need help!

    Write the composite function in the form f(g(x)). [Identify the inner function u=g(x) and the outer function y=f(u).] Then find the derivative dy/dx. y=√sinx √ is square root.

    asked by danny
  27. geometry

    a hollow cylindrical pipe is 21m long .its outer and inner diameters are 10 cm and 6cm respectively .find the volume of copper used in making the pipe?/

    asked by Anonymous
  28. math

    After 12 years manoj will be 3 times as old as he was 4 years ago. Find his present age.

    asked by Anonymous
  29. elementary statistics

    The number of calls received by a car towing service averages 21.6 per day (per 24-hour period). Find the probability that in a randomly selected hour the number of calls is fewer than 4. What requirement for the Poisson distribution is probably not valid

    asked by Rose Bud
  30. Physics

    A 25kg crate is sitting at the bottom of an inclined plane. The inclined plane 12m long meets the horizontal at an angle of 15 degrees and has a coefficient of friction of 0.55. A force is applied to the crate so as to slide the crate up the incline at a

    asked by Rob
  31. Physics

    A box which has a mass of 14kg is sliding along a horizontal surface with a velocity of 18m/s when it encounters a frictionless inclined plane which meets the horizontal at an angle of 28 degrees. The box slides up the incline until it comes to a halt. How

    asked by Rob
  32. Chemistry

    I had to perform an experiment for rate of reaction. The point of the experiment was to show how changes in reactant concentration, temperature, and catalyst presence can affect the rate of a reaction. The reaction that we studied was H2O2 + 2I^- + 2H^+ ->

    asked by Hannah
  33. Physics

    In 9.7 s a fisherman winds 2.1 m of fishing line onto a reel whose radius is 30 cm (assumed to be constant as an approximation). The line is reeled in at constant speed. Determine the angular speed of the reel in rad/s. Thank you.

    asked by Nilan
  34. statistics

    The probability that a married man watches a certain television show is 0.4 and the probability that a married woman watches the show is 0.5. The probability that a man watches the show, given that his wife does, is 0.7. Find the probability that a) a

    asked by Misael
  35. Physics 2

    A wire has a length of 4.52 x 10-2 m and is used to make a circular coil of one turn. There is a current of 7.94 A in the wire. In the presence of a 8.04-T magnetic field, what is the maximum torque that this coil can experience?

    asked by Megan
  36. physics

    If the coefficient of kinetic friction between tires and dry pavement is 0.800, what is the shortest distance in which an automobile can be stopped by locking the brakes when traveling at 25.7 ?

    asked by Jack
  37. Geometry

    Look at the statement below. “All dogs are mammals.” Which of these is a logically equivalent statement? Answer A. All dogs are furry. B. If it is not a dog, it is not a mammal. C. If it is not a mammal, it is not a dog. D. All animals that are not

    asked by Anonymous
  38. math

    A bag holds 3 yellow marbles and 7 blue marbles. how many and what color marbles could you add to the bag so that the probability of picking a yellow marbles is 1/4?

    asked by shion
  39. physics

    The temperature in a room is kept at a constant 20 °C but the humidity is only 20%. If the room has a volume of 30m³, and the room’s door and windows closed, how many kilograms of water must be put into the vaporizer to increase the humidity from 20%

    asked by sand
  40. Precal

    How do you find all the polar coordinates of P=(-1, -2pi/3)? I've read that you're supposed to add 2pi to find the coterminals but when I do that I get different answers then in the book. The book answer is (1, 2pi/3+ (2n+ 1) pi) and (-1, -2pi/3+ 2npi).

    asked by Mayhem
  41. Statistics

    Problem 1. Three supermarket chains in the Denver area each claim to have the lowest overall prices. As part of an investigative study on supermarket advertising, the Denver Daily News conducted a study. First, a random sample of nine grocery items was

    asked by Jess
  42. MATH

    Find the cost of a home in 20 years, assuming an annual inflation rate of 4%, if the present value of the house is $285,000. (Round your answer to the nearest cent.)

    asked by DEE
  43. physics!!!

    To monitor the breathing of a hospital patient, a thin belt is girded around the patient's chest . The belt is a 215-turn coil. When the patient inhales, the area encircled by the coil increases by 41.0 cm2. The magnitude of Earth's magnetic field is 50.0

    asked by Help
  44. Physics

    Two forces, and , act at a point, as shown in the picture. has a magnitude of 8.00 and is directed at an angle of = 65.0 above the negative x axis in the second quadrant. has a magnitude of 6.00 and is directed at an angle of = 53.2 below the negative x

    asked by Miche
  45. physics

    A ball rolls with a speed of 6.4 m/s toward the edge of a table that is 0.7 m above the floor. The ball rolls off the table. a. Find the magnitude of the balls velocity when it hits the floor. m/s b. At what angle, measured from the horizontal, will the

    asked by Tim
  46. physics

    A pitched ball is hit by a batter at a 45° angle and just clears the outfield fence, 90 m away. Assume that the fence is at the same height as the pitch and find the velocity of the ball when it left the bat. Neglect air resistance.

    asked by Tim
  47. statistics

    Roll 2 standard dice and add the numbers. whats the probability of getting a number Larger than 4 for the first time on the third roll?

    asked by cheyanne
  48. Chemistry(Please check)

    1) The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which

    asked by Hannah
  49. Physics

    how many seconds will elapse between seeing lightning and hearing the thunder if the lightning strikes miles away and the temperature is 100.0 degrees F?

    asked by Hannah
  50. Physics

    How does the angle affect the tension?

    asked by Anonymous
  51. Math 208

    (x+1)(x+3)=

    asked by Elaine
  52. Physics

    A body of mass 10kg falls from a height of 5m above the ground what is the kinetic energy of the body just before its strike the ground. Weight loss of energy and take g=10m/s^2.

    asked by Igbekele
  53. Math

    The stopping distance d of a car in feet is related to the speed in mph by the equation d(s)=.02s^2+1.1s Calculate the speed when your stopping distance is: 1.) 51ft 2.) 315.12ft

    asked by Devin
  54. Economics

    adam smith supported three different views of theory of value (are the followings correct, i will add them to my essay) 1. Labor cost: he supported that everyone must produce his own goods using own labor and exchange the surplus with other goods. In this

    asked by Ana
  55. calculus

    I was doing calc hw and I am stuck on a part of a question. =(1/10)-(x/15sqrt(x^2-9)) I am supposed to put this equation equal to 0 and solve for x. The answer is 9/sqrt(5) but I don't understand how the answer comes out to be 9/sqrt(5). Please help. Thank

    asked by cj
  56. Biology

    How did Watson and crick's model explain why their are equal amounts of thymine and adenine in DNA?

    asked by may
  57. Trigonometry (Law of Sine)

    Triangulation can be used to find the location of an object by measuring the angles to the object from two points at the end of a baseline. Two lookouts 20 miles apart on the coast spot a ship at sea. Using the figure below find the distance, d, the ship

    asked by Alianne
  58. chemistry

    The equation A + 2 B = C + D describes an elementary reaction, which takes place in a single step. Thus, the rate law must be a. rate = k(A]2 b. rate = k(B]2 c. rate = k(A][B] d. rate = k(A][B]2 e. none of the above represents the rate law for this

    asked by bob
  59. Math

    Rebekah's recipe for 4 1/2 dozen cookies calls for 6 cups of sugar. How many cups of sugar are needed to make 8 dozen cookies? Is the correct answer 10 2/3 cups?

    asked by Taylor
  60. Math

    Last month Bob's bill was $80.77. This month Bob's bill was $69.06. What is the percent decrease? 80.77-69.06=11.71 11.71 divide 80.77 Round answer Answer: 0.14 Is 0.14 the correct answer?

    asked by Renae
  61. chemistry

    Balance each of the following redox equations using the half-reaction method. HI(s) + H2SO4 (aq) --> H2S(g) + I2 (s) My only question about this equation is...how do I know how many electrons I need to put on both sides? Other than that I know how to do

    asked by Aria
  62. MATH

    thirty percent of the 200 passengers sat alone, into how many parts were the passengers divided?

    asked by bujji
  63. health

    patricia had a car crash while she was on her way to work one morning.she was badly injured and needed to have an arm amputated.explain three effects that patricias physical disability may have on her self-concept.patricias husband,andy is a

    asked by mary
  64. Math

    Lee has 35 dimes and quarters that total $5.00. Solve the system of equations to find how many dimes and how many quarters he has. d+q=35 0.1d+0.25q=5 Please show your work thanks

    asked by Sadie
  65. Math

    a+s=1970 8a+5s=12220 Please help me solve the system of equation and show your work thanks

    asked by Rachel
  66. science

    using 0.5 m hci acid from a stock that is5m hci have to prepare 250 ml

    asked by radika
  67. math-probability

    I have to do a math project using probability. I thought I might use Go Fish cards but I am not what kind of questions to ask can you help please?

    asked by christy
  68. Trigonometry (Law of Sine)

    Triangulation can be used to find the location of an object by measuring the angles to the object from two points at the end of a baseline. Two lookouts 20 miles apart on the coast spot a ship at sea. Using the figure below find the distance, d, the ship

    asked by Alianne
  69. Math 12A

    Each side of a square is 20cm. Four points on the sides are joined as shown to form an inner square. What is the minimum area of the inner square? Can anyone help with this using quadratics? Please!

    asked by Me & u
  70. math

    You spin a spinner divied into thirds and labled a, b, c, and you flip a coin. use a tree diagram to answer the question. How many outcomes show heads and b?

    asked by shion
  71. Science

    a body of mass 5 kg is thrown vertically upwards with a speed of 10m/s what is its k.e. when it is thrown find its potential energy when it reaches at highest poiint also find maximum height attained by the body?

    asked by Sharma
  72. algebra

    A man invested half of his money at 5%, one-third of his money at 4%, and the rest of his money at 5.5%. If his total investment income was $570, how much had he invested? and please show me the solution to solve this problem. thanx sorry bobpursly I cant

    asked by aj
  73. English

    Read the following passage by Picoult and identify the metaphor. Quote the metaphor in your response and explain what makes it fit the definition of metaphor. “My mother moves so fast I do not even see it coming. But she slaps my face hard enough to make

    asked by Riley
  74. physics

    For an object in equilibrium the sum of the torques acting on it vanishes only if each torque is calculated based on your:

    asked by Hector
  75. in speech citations

    how would I site what someone said in a video on youtube in a speech?

    asked by rebekah
  76. Math

    A math teacher wrote x^2+bx+c=0 on the board and asked students to find the two real roots. Alice miscopied one of the coefficients and found that 1 and 4 were the roots. Andy miscopied a different coefficient and found that -2 and 3 were the roots.

    asked by Devin
  77. physics

    A ball rolls with a speed of 4.4 m/s toward the edge of a table that is 1 m above the floor. The ball rolls off the table. a. How long is it in the air? s b. How far out from the edge of the table does the ball hit the floor? m

    asked by John
  78. Calculus

    Determine the points at which f'(x)=0 for each of the following functions: f(x)= x^3+6x^2+1 f'(x)=3x^2+12x What to do next?

    asked by Jake
  79. math

    Keith, Anne, Elizabeth, and Marcus are taking a picture. how many different ways can the friends stand in a horizontal line for the picture?

    asked by shion
  80. Algebra

    The sum of 3 consecutive intergers is 90. Find the largest interger if x is the smallest interger.

    asked by Ernest
  81. physics

    a 1300 kg car starts from rest at A , coasts 170m through a dip and comes to stop at B after coasting a distance d on level ground . if the rolling resistance is a constant force of 220N , determine the distance d .

    asked by Anonymous
  82. Science

    A ball is dropped from a height of 10m .If the energy of ball reduces by 40% after striking the ground, how much high can the ball bounce back?

    asked by Sharma
  83. Physics 2

    A wire has a length of 4.52 x 10-2 m and is used to make a circular coil of one turn. There is a current of 7.94 A in the wire. In the presence of a 8.04-T magnetic field, what is the maximum torque that this coil can experience?

    asked by Megan
  84. chemistry

    For a one step reaction, the activation energy for the forward reaction is 40.0 kJ/mol and the enthalpy of reaction is -20.0 kJ /mol. Which statement below is true? a. The activation energy of the forward reaction would be affected to a greater extent than

    asked by bob
  85. algebra

    The time it takes you to go 12 miles upstream is 5/4 the time it takes you to go 14 miles downstream. If the current is 3mph, how fast do you go in still water.

    asked by Devin
  86. trig

    1.Ifg(x)=cos4x,find g'(pie/24). 2.Differentiate y=csc^2 pie*x

    asked by albert
  87. Physics

    A ball is dropped from 27.0 feet above the ground. Using energy considerations only, what is the velocity of the ball prior to it hitting the ground? If the ball is thrown back up to a ledge 15m above the groud, what would be the velocity as it reaches the

    asked by Hannah
  88. Math

    1.5x+4y=8 x+y=7 Please help me solve this system of equation and show your work.

    asked by Kelly
  89. 7th Grade Math

    What is the radius of a CD in cm? What\'s the height of a CD cm? What\'s the volume of the CD? What\'s the measure of the radius in the center of the CD to the beginning of the music area and the volume of it? Subtract the answer from Part D from your

    asked by Anonymous
  90. Math

    Solve: 3 - x = 12(x - 1) Is the correct answer x = 15/13?

    asked by Chris
  91. college algebra

    find the asymptotes of the function F(x) = 7- ln(x-5)

    asked by Badar
  92. math

    At one tennis match, there were about 6000 people.about 40% more people attended the second match than the first match about how many people were at both games?

    asked by savannah
  93. Calcules

    find y" by implicit differentiation. 4x^3 + 3y^3 = 4 ===================================== 4x^3 + 3y^3 = 4 12x + 9yy' = 0 24x + 9(2yy')y' + 9y^2(y") = 0 y" = -6[4x-3y(y')^2] answer. (it this right? )

    asked by Nurcan
  94. Finance

    You want to buy a stock. There are man dealers you can buy it from, so you lok at their bid-ask spreads. hich dealer do you prefer? A) Dealer 5: 88-91 B) Dealer 1: 90-93 C) Dealer 3: 91-92 D) Dealer 4: 88-94 E) Dealer 2: 89-90

    asked by Stephanie
  95. Chemistry(Please check)

    1) The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which

    asked by Hannah
  96. Chemistry

    When one of the following substances is dissolved in water, the only positive ions in the solution are hydrogen ions. NaOH NaH H2S Nh3

    asked by Christian
  97. Math

    y=3x-1 y=-2x+9 Please help me solve this system of equation and show your work thanks

    asked by Haylie
  98. math

    Now consider a rectangle of perimeter 20cm.let one side be x find the length of other sides in terms of x"plz help me"thnx

    asked by Zama
  99. Statistics

    A set of 50 data values has a mean of 27 and a variance of 16. I. Find the standard score (z) for a data value = 19. II. Find the probability of a data value < 19. III. Find the probability of a data value > 19. Show all work.

    asked by Blackqueen
  100. Math

    How do I solve: sqrt(3)tanx= I need to use the identity tanx=sinx/cosx Thanks

    asked by Bob
  101. COLLEGE CALCULUS. HELP!

    Let f(x)=(-3x^2+6)^4(9x^2+7)^14, Find f'(x). f'(x)= (-3^2+6)^4 d/dx(9x^2+7)^14+(9x^2+7) d/dx(-3x^2+6)^4 =(-3x^2+6)x14(9x^2+7)^13 d/dx(9x^2+7)+(9x^2+7)^14x4(-3x^2+6)^3 d/dx(-3x^2+6) =14(-3x+6)^4(9x^+7)^13 (18x)+ 4(9x^2+7)(-3x^2+6)^3 (-6x)

    asked by cynthia
  102. Math

    3x+3y=15 3x-6y=-12 Please help me solve each system of equation and show your work thanks.

    asked by Haylie
  103. physics

    a 25,ooo kilogram train is traveling down a track at 20 meters per second. a cow wanders onto the tracks 75 meters ahead of the train, causing the conductor to slam on the brakes. the train skids to a stop. if the brakes can provide 62,500 newtons of

    asked by savid
  104. math

    Joseph is making a sandwich. He can choose turkey, ham, or peanut butter on white or wholewheat bread. How many different combinations of bread and filling can joseph choose from?

    asked by shion
  105. Math

    4x+y=-17 -3x+y=4 Please help me solve each system of equation and show your work.

    asked by Hannah
  106. Economics

    Can you tell me please if my answer is right to the following question? The question: present Adam Smith's theory of value and limitations. 1. Labor cost: he supported that everyone must produce his own goods using own labor and exchange the surplus with

    asked by Anna
  107. calculus

    Consider a differentiable functionf having domain all positive real numbers, and for which it is known that f'(x)=(4-x)^-3 for x.0 a. find the x-coordinate of the critical point f. DEtermine whether the point is a relative maximum or minomum, or neither

    asked by bill
  108. AMHS'Mechanics

    The spring shown in figure is unstreched when a man starts pulling on the cord.The mass of the block is M.If the man exerts a constant force F.Find:-1.The amplitude and time period of the motion of thae block,2.The energy stored in the spring when the

    asked by Deep
  109. Pre-Cal

    A website is offering a savings account that pays 33% compounded continuously. How much interest would a deposit of $3,000 earn over 15 years? (Round your answer to the nearest cent.) I used f(t)=Pe^rt and got 1000e^-0.045t I don't know what I did wrong.

    asked by Ann
  110. Indices help!

    I need help with a question! If 3^(3x+2)*7^(x-1)=81^x*7^2x, what is 21^x

    asked by YOY
  111. Old Bridge

    Sue has 8 pairs of dress shoes. How many diff. way can she arrange five pairs of her shoes in her closet?

    asked by Jane
  112. English

    Writeacher, I really need your help to write a short paragraph (100 words) on how best to prepare for a university interview. I'll have to write a report for students giving them some advice on what to do. I should include information on how to dress, hot

    asked by Henry2
  113. physics

    Under what conditions can you use the formula W=Fnetd to calculate the work done on an object? Describe 2 requirements. What conditions would an applied force increase and decrease the energy of any object.

    asked by Anonymous
  114. algebra

    A man invested half of his money at 5%, one-third of his money at 4%, and the rest of his money at 5.5%. If his total investment income was $570, how much had he invested? and please show me the solution to solve this problem. thanx

    asked by aj
  115. Science

    iron cube of side 10 cm is kept on a horizontal table . If the density of iron cube is 8000 kg /m cube , find the pressure on the portion of the table where the cube is kept?

    asked by Sharma
  116. MATH

    thirty percent of the 200 passengers sat alone. 1.Into how many parts were the passengers divided? 2. how many were in each part? 3.how many parts sat alone? 4. how many passengers sat alone? 5. how many parts did not sit alone? 6. how many passengers did

    asked by bujji
  117. Math

    x=-2y+1 x+3y=-2 Please help me solve each system of equations and show your work thanks.

    asked by Lacy
  118. chemistry

    The decomposition of hydrogen peroxide in solution and in the presence of iodide ion was studied in laboratory, and the following mechanism proposed based on the experimental data. H2O2 + I - = H2O + IO - (slow) H2O2 + IO - = H2O + O2 + I - (fast) Which

    asked by bob
  119. English

    Thank you very much for your help. I tried to include a few things, though I couldn't find much about how to prepare for an interview. 1) During the interview you’ll be asked to talk about your interests, show your personality and offer an impression of

    asked by Henry2
  120. chemistry

    If the reaction Cl2 (g) + O3 (g) = Cl2O (g) + O2 (g) occurred in just two steps, what would be the overall order of the reaction be? a. 1 b. 2 c. 3 d. 4 e. not possible to determine from the information given help

    asked by bob
  121. English

    I also need to find information about the following questions. I really hope you can help me, writeacher. 1) How important do you think it is for young people to feel part of a group? 2) Do you think that if a child has very strict parents, he or she will

    asked by Henry2
  122. Calculus

    Evaluate the limit: lim 25-(x+2)^2 / x-3 x->3

    asked by Labiba
  123. Math

    A fisherman has estimated that it takes 6 minutes to paint each square foot of the hull of his boat? How much time should the fisherman allow for the painting of the hull, if the hull were composed of two sides, each 31.5 feet by 8.00 feet? Is the correct

    asked by Sam
  124. Math

    The speed limit on a highway is 65 mi/hr. What is this speed in km/hr? Is the correct answer 104 km/hr?

    asked by Mandi
  125. Statistics

    Find Maximum Likelihood Estimator of Gamma Distribution Given: f(x; β) = [ 1/( β^2) ] * x * e^(-x/ β) for 0 < x < infinity EX = 2β and VarX = 2(β^2) Questions: 1/First, I believe this is a gamma distribution with alpha = 2. Is that right? 2/Find

    asked by Cecile
  126. History

    Why is Lucius Lyon reluctant to give up the Toldeo Strip?

    asked by Lauren
  127. Math

    Simplifying Radicals: 2ã108 ----- ã180y The check mark represents the radicand. How do I work this problem?

    asked by Jane
  128. Psychology

    Can someone give me an example when the self-fulfilling prophecy resulted from you own expectations of the outcome of the event? Can someone give me an example when the self-fulfilling prophecy resulted someone else's expectations of your performance? I

    asked by Alana
  129. physics

    State biot savart's law

    asked by mrt
  130. Calculus

    For the following function, state the derivative and evaluate f'(4): f(x) = x Please show your work! Thank you!!

    asked by Labiba
  131. Chemistry

    When one of the following substances is dissolved in water, the only positive ions in the solution are hydrogen ions. CH3OH LiOH PO4 -3 CO 3 -2

    asked by Christian
  132. math

    How to I round 613,572,947 to the nearest tens. My teacher confuses me with this. Would it be 50?

    asked by ruby
  133. Finance

    Which of the following is true regarding financial instruments? A) Common stock typically cost less than Debt B) Stock has limited liability C) Common Stockholders have a senior claim over Debt Holders D) Debt holders have voting rights E) Common dividend

    asked by Stephanie
  134. ela

    What does aldous Huxley quote mean "Technological progress has merely provided us with more efficient means of going backward."

    asked by erika
  135. Geography

    Why oceans are important as a source of moisture

    asked by Slindile Muthwa
  136. math

    3(x + 2) – 5(x^2 – 6x + 7) + 3(x – 6)

    asked by Anonymous
  137. world history

    Why were leaders of Western Europe surprised by the Stalin- Hitler Pact?

    asked by Anonymous
  138. KNOWLEDGE

    Indian movie that won oscar

    asked by MARY
  139. pre-cal

    Find the inverse function of f. f(x) = log5(x − 2) Can someone explain to me how do i get this answer like this???? Thank you!!! the answer is: =ln(x-2)/ln(5) f-1(x)= 5^x+2

    asked by melek
  140. ela

    What does the quote from Jean arp "soon silence will have passed into legend.man has turned his back on silence. Day after day he invents machines and devices that increase noise and distract humanity from the essence of life,contemplation and meditation."

    asked by erika
  141. Math

    The Robinsons decide they would rather purchase the $85,000 home. Their bank requires a 5% down payment to be paid to the seller and a payment of 1 point (1%) of the mortgage at the time of closing. How much is the down payment?

    asked by Pat
  142. math

    A bag holds 8 yellow marbles and 5 orange marbles. How many and what color marbles could you add to the bag so that the probability of picking a yellow is 2/3?

    asked by shion
  143. English

    Writeacher, I need to know the vocabulary generally used when comparing pictures. I need you to check these sentences and improve them. 1) Why may people have to wear these clothes? The people in the picture may have to wear these clothes because I think

    asked by Henry2
  144. geometry

    A carton containing soap weights 6kg.if the weight of the empty carton is 600kg,find the weight of the soap

    asked by Anonymous
  145. college Calculus Help!

    Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3 ---> i hate trig. 3. y=4sec5x 4. y=xsin√x

    asked by dania
  146. English

    I need help finding stats about saving money by using the online community for communication instead of in the actual community. How you save money by doing this

    asked by Anonymous
  147. geometry

    A carton containing soap weights 6kg.if the weight of the empty carton is 600kg,find the weight of the soap solutin

    asked by Anonymous
  148. Algebra

    x^2–4 ÷ x^2+5x+6 ____________ ______________ x^2 + 3x – 10 x^2 + 8x + 15

    asked by Diana
  149. college Calculus Help!

    Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3 ---> i hate trig. 3. y=4sec5x 4. y=xsin√x

    asked by dania
  150. medical front office

    How does bookkeeping and banking affect the position of the Medical Assistant?

    asked by beth
  151. physics

    what is the power of a 6 ohm bulb when 3 of such bulbs ar econnected in a 12 volt parallel circuit?

    asked by Hannah
  152. geometry

    In the accompanying diagram ab and cd are chord of the circle and intersect at e if ae=10 en=9 and ec =6 find de

    asked by Alley
  153. math

    these letters are placed into a bag:OUTCOME.What is the probobility of picking a vowel?

    asked by shion
  154. Math

    Find the roots of the given equation by completing the square: ax^2+bx+c=0

    asked by Devin
  155. maths

    10 pencils in each packet 46 pencils how many packets are needed

    asked by jack
  156. chemistry

    A particular reaction has an activation energy of 51.6 kJ/mol-rxn. How much faster is the reaction at 50 degrees C versus 25 degrees C? a. 2 times b. 5 times c. 3 times d. half as fast d. 20% as fast help No one has answered this question yet.

    asked by bob
  157. math problem

    Add simplify if possible 9/10t + 6/25t

    asked by Clenisford J
  158. Chemistry

    A line in the infrared region of the hydrogen spectrum has a wavelength of 1.875 micro meters. What is the transition responsible for this wavelength?

    asked by Jimmy
  159. math

    Tristan is having a birthday party. He doesn’t want anyone less than 10 years old to come to his party. If y equals age in years, which number sentence expresses his age requirements? A. y < 10 B. 10 = y C. y 10 D. 9 > y

    asked by math
  160. calculus

    sketching the level curve of f(x,y) = y/(x^2 + y^2) Just wondering if there is a way to get the equation of the line cause I have no clue if im supposed to do it another way or im just rusty and need to review my precalc notes.

    asked by Bryan
  161. math

    What is the angle formed if there is a rise of 10 inches over a run of 57 inches?

    asked by John
  162. Physiology

    Which structures of the inner ear would be activated by a somersault? By a cartwheel? By fast acceleration in a race car?

    asked by Anonymous
  163. Math

    Find the value of the expression. 99 x 4/9 - (5+4) Is the correct answer 35?

    asked by Renae
  164. math

    how do you Match each ordered pair with the quadrant in which it lies?

    asked by Lorna
  165. Math gr 4

    Is 4 2/4 lbs heavier than 4 1/2 lbs?

    asked by Miya
  166. Math -Tutor help only please!

    Solve: 2/12x-3/12=8/12 Is x = 11/2 the correct answer?

    asked by Chris
  167. CHEMISTRY

    Why does thymol blue change color at the pH that is does? I know it goes through transition one and transition two but I don't know why it changes at the pH that it does.

    asked by TED
  168. Math Help!

    How do I solve this? 7 = m/5

    asked by Mandi
  169. Math help! Tutor only!

    Find the value of the expression. 99 x 4/9 - (5+4) Is the correct answer 35? Help please how do I solve this?

    asked by Renae
  170. Math

    If the radius is 2cm and the height is 8cm. How do i start this.

    asked by Phillip Su
  171. chemistry

    A line in the infrared region of the hydrogen spectrum has a wavelength of 1.875 micro meters. What is the transition responsible for this wavelength?

    asked by Jimmy
  172. MAth(algebra)

    7/2x - 5/x = 5 solve the equation check your answer

    asked by Jennifer
  173. 8th grade math

    The time is now between 3 and 4 o'clock. Fifty-four minutes ago, the number of minutes past 2 o'clock was twice the number of minutes that it is now before 4 o'clock. How many minutes before 4 o'clock is it?

    asked by Anonymous
  174. Math

    x^2 + 9x + 20 over x^2 -25 divided by x +4 over x - 4 How to do this really confusing i need to simplify the rational expression

    asked by luis
  175. physics

    Three identical spheres of mass M are placed at the corners of eqvilateral triangle of sides 2m taking one of the corner as origin the position vector of the centre of mass is

    asked by Anonymous
  176. organic chemistry

    how do you propose a synthesis of a triphenylmethanol using a benzene, a formaldehyde,and any other inorganic reagents?

    asked by Dee
  177. Finance

    Which of the following is true about hedge funds? A) They are heavily regulated B) Hedge fund investments are more liquid than mutual fund investments C) Most of the hedge fund managers receive very poor compensation D) The major portion of hedge fund's

    asked by Stephanie
  178. math

    Find the unknown value in the following equation: y ÷ 10 = 6 A. 6 B. 60 C. 600 D. 6,000

    asked by math
  179. Math

    how do you factor: 3x^2 + 11x - 4

    asked by Anon
  180. math

    Penelope is having a party for her friends. She invited ten friends and seven have said they will come. Three of Penelope’s friends haven’t responded yet. Penelope needs to buy party supplies. Which sentence below is true of this situation? A. Penelope

    asked by math
  181. math

    a clear plastic bag containing black marbles and white marbles.draw the box of marbles and shade the marbles to show that 1/4 are black

    asked by khalid
  182. Finance

    When a company’s executives purchase securities of their company and disclose it to the public: A) It is considered illegal B) This strategy is considered a Flight to Quality C) The market does not react D) It is generally seen as a positive sign for the

    asked by Stephanie
  183. Computers

    How would you write a linux program to read data from a joystick, and turn that data into a command that is pushed onto the queue?

    asked by Adhi
  184. Math

    5e+15p

    asked by Jess
  185. math

    Now consider a rectangle of perimeter 20cm.let one side be x find the length of other sides in terms of x"plz help me"thnx

    asked by Zama
  186. math

    Now consider a rectangle of perimeter 20cm.let one side be x find the length of other sides in terms of x"plz help me"thnx

    asked by Zama
  187. gender roles

    what are characteristics and behaviors that are associated with being male and female in or society?

    asked by lou
  188. science

    Scientists performed an experiment to determine whether there is a connection between learning ability and food. They took two groups of 20 mice each, all from the same purebred strain. The mice were deprived of food for 3 days and then given a standard

    asked by dude
  189. MATH

    Richard invited 6 friends to go skating. Of those 6 friends, there are twice as many boys as girls. How many girls were invited to go skating? A. 1 B. 2 C. 3 D. 4 I DON'T WANT MS.SUE TO HELP ME.

    asked by math
  190. math

    find the value of ¨ª(theta) for 0 ¡ ¨ª(theta) ¡ 2¥ð(pi) a)sec¨ª = ¡î2 b)tan¨ª = -1 c)sin¨ª = 1/¡î2 d)cot¨ª = ¡î3

    asked by bela
  191. Maths

    y=1/x-3 - 4 state the domain and range, at first I though domain would be R (any real number) and range would be R also? I'm not sure

    asked by Ben
  192. algebra

    Express in simplest form: 10 + 72 / 6 x 4

    asked by Anonymous
  193. English

    Does geography/history/economics/politics play a role in your understanding of the theme of the book "The namesake"? If so, how?

    asked by Labiba
  194. Probability

    how many can 5 people be arranged in a row if the father is on the far right?

    asked by phil
  195. math

    Ariel used the number 1,111 five times and got the number1,111. Explain how Ariel might have done this?

    asked by antonio
  196. physics

    Under what conditions can you use the formula W=Fnetd to calculate the work done on an object? Describe 2 requirements. What conditions would an applied force increase and decrese the energy of any object.

    asked by deedee
  197. American Literature

    According to Langston Hughes in "The Negro Artist and the Racial Mountain, what is the "mountain standing in the way of any true Negro art in America"?

    asked by help
  198. chem sig figs

    How many significant figures are in 0.0? And how about 0.00?

    asked by L.Bianchessi
  199. Physic

    What is comet how it fall

    asked by Vivek
  200. math

    Nick is writing the 4 letters in his name in different orders. In how many different orders can he write the letters?

    asked by shion
  201. math

    what does z equal in the equation 3z minus z equals 24

    asked by megan
  202. math

    Nick is writing the 4 letters in his name in different orders. In how many different orders can he write the letters?

    asked by shion
  203. English

    I need help finding statistics on how many people prefer managing money online instead of the actual community.

    asked by Anonymous
  204. geometry

    the measurement of two angles is 48 an 23 find the third

    asked by Anonymous
  205. math

    what size of room that's 711 square feet

    asked by geoff
  206. physics

    under what conditions can you use the formula W=Fnetd to calculate the work done on an object? Describe at least two requirements.

    asked by Anonymous
  207. calculus 1 help!!

    If f(x)=(4x+8)^-2, Find f'(x)

    asked by danny
  208. Biology

    What is the importance of embryo polarity during cleavage?

    asked by Timothy
  209. chemistry

    If the % m/m of a solution of NaCl is 22%, how many grams of NaCl are present in 250g of solution???/

    asked by Mandy
  210. physics

    A 90 cm length of steel wire with a diameter of 0.5 mm is stretched between the inside walls of an oven the wire is just taut with no tension when the temperature in the oven is 250 °C. What is the the tension force in the wire when the oven cools to a

    asked by sand
  211. ela

    What does this quote mean from aldous"technological progress has merely provided us with a more efficient means of going backwards."

    asked by erika
  212. Economics

    If all company in a certain industry are earning economic profits now, in long run what will happen?

    asked by me
  213. Precal

    Write down 3 other possible trig forms for - 1 + isqrt2. How do you solve this?

    asked by Mayhem
  214. english - Writeacher?

    Can someone look over my defitional essay. I'm comparing traditional versus modern family and using the reality tv as my examples arguing that modern is better. Using my own definition. Would like to know if the sentences are in the essay are okay. I am

    asked by Farrell
  215. math

    Abox holds 2 marbles and 6 red marbles. How many and what color marbles could you remove from the bag to make the probability tf picking red 1/2?

    asked by shion
  216. Science

    What is comet how it fall and why he look blue

    asked by Vivek
  217. ela

    What does this quote from Albert Einstein "it has become appallingly obvious that our technology has exceeded our humanity".

    asked by erika
  218. chemistry

    complete the following double displacement reaction and indicate the states: KCl+AgNO3=

    asked by Mandy
  219. English?

    What is a prepositional phrase?

    asked by Cassie
  220. calculus

    why is that when it comes to diagonal it must be divided into 2

    asked by diny
  221. OldBridge

    Triangle ABC has sides of: AB=25 BC=4 CA=26 Angle B is a Rt. Angle. What is the approx. measure of Angle A? How do you find the answer? Thanks, Jane

    asked by Jane
  222. Computers

    I asedthi question areay, but I accidentally wrote in linux rather than in C. How would you write a C program to read data from a joystick, and turn that data into a command that is pushed onto the queue?

    asked by Adhi
  223. Algebra 2

    2 1/8 ln y= 4 1/4 ln x+ 3/8

    asked by Danielle
  224. Statistics

    can someone give me the formula of standard deviation?Please! Thanks!

    asked by pallavi
  225. physical science

    120ml of a solution whose concentration is 30g/ml was diluted with distilled water by raising its volume to 160cm3. Calculate the concentration of the new solution.

    asked by grace
  226. Ms. sue

    To Ms. Sue, Thanks for correcting my School subject. Did you answer my question? Cannot locate

    asked by Jane
  227. marketing

    discuss the various ways that distribution adds or utility to a product or service?

    asked by Anonymous
  228. English

    Is the grammar correct? When things aren't going your way, always remember to keep smiling, because life is a beautiful thing and there's so much to smile about.

    asked by Hailey