Posts by Andrew

Total # Posts: 1,211

  1. chemistry

    2.34 moles
  2. Math calculus 2

    Find the volume of the solid generated by revolving the given region about the line x=16: y=4-x,y=0,y=2,x=0.
  3. World History

  4. World History

    Can someone describe characteristics of absolute monarchies and the rights of citizens under those monarchies in Austria, Prussia, and Russia
  5. Chemistry

    How many moles of tungsten atoms are in 6.5x10^25 atoms of tungsten?
  6. physical scince

    Imagine two billiard balls on a pool table. Ball A has a mass of 7 kilograms and ball B has a mass of 2 kilograms. The initial velocity of the ball A is 6 meters per second to the right, and the initial velocity of the ball B is 12 meters per second to the left. Compare the ...
  7. Managerial Economics

    Suppose you decide to produce a product and you discover it has a demand function given by; Q = 10P^-0.5Y^0.75 (I) calculate the price elasticity of demand for the product. (ii) calculate the income elasticity of demand.
  8. Math

    1 rabbit saw 6 elephants while going to the river. Every elephant saw 2 monkeys going towards the river. Every monkey holds 1 parrot in their hands. How many animals are going towards the river?
  9. algerba math

    Write the next two terms in the pattern. 9, 27, 81, 243, ___, ___
  10. algerba math

    Write the next two terms in the pattern. 9, 27, 81, 243, ___, ___
  11. Excel

    That is ok. I will figure it out. I appreciate that you are honest with me and that you took time to answer.
  12. Excel

    I need help to convert a birthday in one format to another w/o using the cell formating by using EXTEXT and DATEDIF. example: 901101 -> 1990-11-01
  13. Math

    Find g'(x) G(x)=9tcos(t^10)dt; intergral from [0 to sqrt(x)]
  14. Math Help!!

    Find all points of the graph of y=7x^2+7x whose tangent lines are perpendicular to the line -49y=x
  15. Math

    Li cut a 6inch piece of string into pieces that are each 1/2 how many string did she get
  16. Math

    A faucet is leaking at a rate of 4.2 milliliter per minute. How many gallons of water does the faucet leak per day? Use 1 L = 0.26 gal. Explain how you solved this problem
  17. Chem

    Sodium thiosulfate, Na2S2O3, is an important reagent for titrations. Its solutions can be standardized by titrating the iodine released when a weighed amount of potassium hydrogen iodate, KH(IO3)2 (389.912 g/mol), is allowed to react with excess potassium iodide in acidic ...
  18. math

    the sales tax in the town where amanda lives is 7%.amanda paid $35 in sales tax on a new stereo.what was the price of the stereo?
  19. Math

    How many 1 1/4 foot pieces can you cut from a piece of wood that is 20 ft long
  20. Science

    WHat names do we give to portion of the earth form (a) our gaseous environment, (b) our liquid environment, and (c) our solid environment. My answers a. greenhouse gases b. ocean c. land
  21. math

    The scale on amount is 2 inches equals 75 feet. On the map a rectangle or park is 8 inches long and 3 inches wide. What is the actual area of the park? Please answer I am confused.
  22. Math

    Two trains leave the station at the same time, one heading east and the other west. The eastbound train travels at 85 miles per hour. The westbound train travels at 95 miles per hour. How long will it take for the two trains to be 252 miles apart?
  23. physics

    A 500 g mass of Copper at 24°C is placed in contact with another 750g of copper at 84°C. If it is isolated from it surroundings, what will be the final equilibrium temperature of the blocks.
  24. Mathematics

    Juice is sold in a rectangular prism measuring 11 cm by 6 cm by 4 cm. A cube is built to hold the same volume. By how much does the surface area decrease? Give answer to 1 decimal place.
  25. Physical Science

    At a crime scene, the forensic investigator notes that the 7.0-g lead bullet that was stopped in a doorframe apparently melted completely on impact. Assuming the bullet was fired at room temperature (20°C), what does the investigator calculate as the minimum muzzle ...
  26. Math

    Method C? It's seems to be less biased since it's randomly chosen
  27. Math

    Predicted winner in an election for town mayor . Method C: Telephone 100 randomly-chosen voters who live in the town. 54 percent plan to vote for the incumbent mayor. Method D: Telephone 70 people who have lived in the town for more than 25 years. 45 percent plan to vote for ...
  28. Math

    Perimeter (p) = 200cm 2(L+B)=200 Length (L)= (16+x)cm Solution substitute 2(16+x)=200 32+2x=200 2x=200-32 2x=168 divide both sides by 2 2x=168 2x/2=168/2 x= 81 Remember, Length(L)= 16+x 16+81 Length=97cm 2(L+B)=200 2(97+B)=200 divide both sides by 2 2(97+B)/2=200/2 (97+B)= 100...
  29. 6th grade math (student)

    Yes. I didn't know I was to assume that she answered all 20 questions correctly. Thank you!
  30. 6th grade math

    On a math quiz, Mary scored 3 points for each of the 12 multiple choice questions she answered correctly, and 5 points for each of the 8 free response questions she answered correctly. What was the total number of points Mary scored?
  31. it

    Of course.
  32. Mathematics

    There are 4 sides to a square. So, ideally the equation would be written as 20/4 = ? Seeing as how 20 is the entire length of the square. 20/4 = 5
  33. Math

    Ever tried wolfram alpha? The answer to your equation here though I've figured is 480. 48 possible arrangements of women to their roles and 10 to the men, in such a situation. to find the possible arrangement for the two combined we must then multiply as each combination ...
  34. math

    There are 3 red balls and 7 blue balls in Bowl A, and 8 red balls and 2 blue balls in Bowl B. Mandy rolls a die and if a prime number is up, Bowl A is selected; otherwise Bowl B is selected. Then Katie draws a ball randomly from the selected bowl. Find the probability of Bowl ...
  35. Physics

    A 1140 kg car traveling south at 24 m/s with respect to the ground collides with and attaches to a 2550 kg delivery truck traveling east at 16 m/s.
  36. Probability, Stats

    For every 1000 batteries produced by a manufacturer 15 are defective. What is the probability that 100 randomly chosen batteries will have exactly 2 defective batteries?
  37. Precalculus

    its pi/2
  38. Chemistry

    I did again, using (molecular weight 16.0) and (atomic weight 40.0), instead of the molar masses to convert from g to mol and I used a 50g imaginary sample. It is pretty close to 500. torr, maybe just a rounding error?
  39. Chemistry

    A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0). If the partial pressure of argon is 200. torr, what is the pressure of methane, in torr? I am coming out with 443torr, but the listed options are 80.0 torr b. 200. torr c...
  40. Chemistry

    A gas mixture consists of equal masses of methane (molecular weight 16.0) and argon (atomic weight 40.0). If the partial pressure of argon is 200. torr, what is the pressure of methane, in torr?
  41. Math

    There are 132 people seated in the school auditorium for an assembly.  There are 6 rows in the auditorium, each with the same number of seats.  If the auditorium is completely filled, how many seats are there in each row?
  42. chemistry

    a) 14.6 g B) 23.76 g C) 38.54 g
  43. math

    use a arrow notation to write a rule for this translation (2,1) (5,3) (-1,4) ?
  44. language arts

    1. which of the following sentence contains a linking verb ? A. Teresa wore her fav shoes today. b. her shoes look really comfortable c. she put them on with striped socks d. Teresa walked for hours without a complaint ! I'm not sure whts the answer , I think its A or b , ...
  45. math

    2. is D n 4. is b , wht is 3 n 1?
  46. math

    1. determine which order pair is a solution of y = -5x + 10 A. (-15,5) **** B. (2,0) C. ( -1 , -5 ) D. (3, 25 ) 2.on which of the following lines does the point ( 7,1 ) lie? A. y-5x = 4 B. y=x -10 C. y = -4x +3 *** D. y + -x +8 3.find the slope of the line through ( -9 , -10...
  47. math

    Four friends contribute sums of money to a charitable organization in the ratio of 2:4:5:7. if the largest amount contributed is $1.40, calculate the total amount contributed used by the four people?
  48. Chemistry

    Before small batteries were available, carbide lamps were used for bicycle lights. Acetylene gas, C2H2, and solid calcium hydroxide were formed by the reaction of calcium carbide, CaC2, with water. The ignition of the acetylene gas provided the light. Currently, the same lamps...
  49. Chemistry

    A sample of carbon monoxide was collected over water at a total pressure of 752 torr and a temperature of 15°C. What is the pressure (in torr) of the carbon monoxide?
  50. math-mechanics 1

    i solved a)u=2i and b)r=2t+1/2[-0.4(i) 0,2(j)] at c) i don t have idea how to solve At time t = 0, a small boat is at a buoy travelling due east with speed 2 ms?1 . The boat experiences a constant acceleration of (– 0.4i + 0.1j) ms?2 . The unit vectors i and j are ...
  51. math

    A girl swims across a river. When she swims in still water, she swims at 1.25 m/s, the river flows parallel to its banks at v m/s. The girl aims to swim upstream at angle ? degrees parallel to the river bank so that her resultant velocity of 1 m/s is along AB, perpendicular to...
  52. Chemistry

    How many milliliters of water at 25.0°C with a density of 0.997 g/mL must be mixed with 165 mL of coffee at 91.0°C so that the resulting combination will have a temperature of 62.1°C? Assume that coffee and water have the same density and the same specific heat (4....
  53. Chemistry

    Calcium oxide, or lime, is produced by the thermal decomposition of limestone in the reaction CaCO3(s) arrow CaO(s) + CO2(g). What mass of lime can be produced from 2001.2 kg of limestone?
  54. Chemistry

    For the reaction HCl + NaOH → NaCl + H2O, how many moles of hydrochloric acid are required to produce 281.0 g of water?
  55. math

    At a sports festival half the number of people that chose basketball, chose football. The number of students who chose basketball was a quarter the number of students who chose baseball. There were 84 more students who chose baseball than soccer. How many chose basketball?
  56. Math

    Two 2 1/2 inch plastic strips and two 5 1/3 inch plastic strips are used to form a rectangle. What is the Perimeter of the rectangle?
  57. Physics

    A 1.55 m tall person lifts a 1.80 kg book off the ground so it is 1.95 m above the ground. A.) What is the potential energy of the book relative to the ground? B.) What is the potential energy of the book relative to the top of the person's head?
  58. Chemistry

    In order to determine the concentration of a solution of Carbonic Acid (H2CO3), a sample was placed in a buret and titrated with 0.1132 M Sodium hydroxide. For the carbonic acid, the initial reading was 11.0ml and final reading was 31.0 ml. For sodium Hydroxide, the initial ...
  59. Maths

    The sum of 26 and a number equals 3 times the number Have to define a variable ,then write equation
  60. Math

  61. math

    Kyle and Andrew decide to make some money by raking leaves in their neighborhood. The houses in their neighborhood each have half acre lawns. Kyle and Andrew each start by raking the leaves from their own yards. Kyle realizes it takes him 3 hours to rake one yard and Andrew ...
  62. Physics (Mechanics)

    A bat makes contact with a ball 0.8 meters above the ground. The ball then travels with a speed of 22 m/s, moving up. How high does it go?
  63. Math

  64. Psychology

    China and Singapore are examples of what type of economies?
  65. Math

    Given 800 matches, what is the largest figure in the series(ie what value of n) that you could construct and how many matches would you have left over at the end?
  66. Algebra

    Hey! I need some help with this question! I totally forget how to do these types of problems! 1 over 2.75 = 1 over 3.2 - 1 over x ( 1/2.75 = 1/3.2 - 1/x) / = fraction bar
  67. control structures

    A store uses the following policy to award discount. If the customer purchases products costing more than ksh 30,000 she is given a discount of 10%, otherwise she is given a discount of 2%. Write a complete C++ program that allows a user to input the total value of purchases ...
  68. COM 425

    Organizational innovation is a planned and direction change intended to 1) get an advantage over the organization's competition 2) improve the organization's upper hierarchy 3) address problems and improve organizational performance 4) dismantle organizational rules ...
  69. Math

    Which letter on the number line above represents 6?
  70. science

    hipocryte do your own work
  71. science

  72. 8th grade algebra 1 b

    HELP I'M DESPERATE did u submit the test right the anwsers down here
  73. Math

    Then there would 9 and 2/5 pieces left.
  74. Computer science

    How is creating a virtual ecosystem similar from the real world?
  75. Msth

    The first 10 miles of a taxi ride for free each additional mile cost $0.45 John takes a taxi ride across town and it's a driver $4 write an expression to represent the cost of M miles
  76. Math

    The number of blocks has nine in the ones place the numbers in the hundreds place is one more than the number in the tens place there are two numbers equal 11 how many block are there
  77. Algebra

    A farmer has 20 acres to plant in wheat and barley. He has to plant at least 15 acres. Wheat costs $200 per acre to plant and barley costs $150 per acre, and the farmer has only $2400 to spend. If the estimated profit of an acre of wheat is $450 and the estimated profit of an ...
  78. Algebra

    Bakery has bought 250 pounds of muffin dough. They want to make waffles or muffins in half-dozen packs out of it. Half a dozen of muffins requires 1 lb of dough and a pack of waffles uses 3/4 lb of dough. It take bakers 6 minutes to make a half-dozen of waffles and 3 minutes ...
  79. Algebra

    The first group was responsible for making 160 suits while the second group was responsible for making 25% fewer suits in the same amount of time. The first team made 10 more suits each day than the second team and finished its job 2 days before the deadline date. How many ...
  80. Algebra

    A tourist traveled on a motorboat against the current for 25 km. And then returned back on a raft. In the boat the tourist traveled for 10 hours less than on the raft. Find the speed of the current if the speed of the motorboat in still water is 12 km/hour.
  81. Algebra

    A ship traveled 150 km with the current, and then turned around and traveled back, spending 5h and 30 min on its trip. Find the speed of the current if the speed of the ship in still water is 55 km/hour.
  82. Algebra

    A train covered the distance of 400 km between A and B at a certain speed. On the way back it covered 2/5 of the distance at that same speed and then it decreased its speed by 20 km/hour. Find the speed of the train at the end of its journey from B back to A, if the entire ...
  83. Algebra

    An automobile covered the distance of 240 km between A and B with a certain speed. On its way back, the automobile covered half of the distance at the same speed and for the rest of the trip he increased his speed by 10 km/hour. As a result, the drive back took him 2/ 5 of an ...
  84. politcal science

    Ralph Nader
  85. Math

    The units digit of a two-digit positive integer is 4. If the tens digit and units digit of the number are switched, the new number is 45 less than the original number. What is the sum of the original and the new number?
  86. Science. (I'm patient, no rush)

    ur right
  87. Algebra 2

    Log base 5 of 16 cubed. Times log base 11 of 6 squared. Equals logx.
  88. Geography and Society

    Actually, it's "areas near the poles". I just took the quiz. Also, you know this, because near the poles, it's colder, so all the moisture in the air freezes, making very, very, very dry.
  89. Algebra

    identify the initial amount a and the growth factor b in the exponential function g(x)=14*2^x a=14, b=x a=14, b=2 a=28, b=1 a=28, b=x
  90. L.O

    Nobody can answer this question but you. What do you think it is?

    what is the question you are asking?
  92. English

    Thanks Ms. Sue! You are a great help!
  93. English

    hi I need help with this. It is a section from the story 'The Sniper' and it is a PEE (Point, Evidence, Explanation) question... PLEASE HELP ME. Here is the question: "The writer says that the sniper's eyes had 'the cold gleam of the fanatic' what does...
  94. English

    What i do is i look for historical events for example example World War 2 and i write about that
  95. Math

    How do you find the point of intersection(s) for x = 2y2 + 3y + 1 and 2x + 3y2 = 0 A) You cannot find points of intersections for non-functions. B) Plug in 0 for x into both equations and solve for y. Then plug that answer back into the other equation to find the corresponding...
  96. Algebra

    substitute 12=-4(5)+3 -20+3 12=-17 is not true
  97. physics

    session.masteringphysics. com/problemAsset/1187768/5/P4-80.jpg
  98. physics

    A 71.0 kg patient is suspended in a raised hospital bed as shown in the figure. The wire is attached to a brace on the patient's neck and pulls parallel to the bed, and the coefficients of kinetic and static friction between the patient and the bed are 0.500 and 0.800, ...
  99. Science

    If an astronaut with a tool belt accidentally pushed off from the shuttle, how could the tools in the belt be used to return the astronaut to the shuttle?
  100. Math

    What's another way you can write 0.023 (fraction or percent) problem: write 0.023 two different ways
  1. Pages:
  2. 1
  3. 2
  4. 3
  5. 4
  6. 5
  7. 6
  8. 7
  9. 8
  10. 9
  11. 10
  12. 11
  13. 12
  14. 13
  15. Next>>