Popular questions and responses by max
  1. chemistry

    What is the molar concentration of sodium ions in a 0.450 M Na3PO4 solution?

    asked on March 30, 2013
  2. math

    You have exactly 100 dollars to buy 100 animals you must buy at least one of each of the following animals Chickens=50 cents each Pigs=3.00 each Cows=10.00 each

    asked on February 15, 2011
  3. statistics

    72% working women use computers choose 5 at random whats the probility at least 1 does not use a computer whats the probility that all 5 use a computer

    asked on September 17, 2011
  4. Physics HELP PLEASE

    If 10-kg of ice at 0 degrees Celsius is added to 2-kg of steam at 100 degrees Celsius, the temperature of the resulting mixture is? Use Joules. ANSWER: 40 Specific Heats: Ice = 2060 Steam = 2020 Latent Heats: Water melting = 3.33x10^5 Water boiling =

    asked on February 11, 2013
  5. Math

    Calculate S(17) for the geometric series 256 - 128 + 64 - 32 + ... using the finite geometric sum formula. Round your answer to three decimal places. 170.668 0.004 511.996 168,151.254 Find a(5) for the geometric sequence in which S(6) = 63 and the common

    asked on January 9, 2018
  6. Art History

    The grid-like Hippodamian plan is similar to that of the City of Machu Picchu City of Nan Madol Palace at Versailles Forbidden City I think it's Machu Picchu, if not, Nan Madol. My lesson/textbook does not address anything about this (they don't even

    asked on March 5, 2019
  7. Math

    Suppose theta is an angle in standard position with cos theta > 0. In which quadrants could the terminal side of theta lie? Select two answers. I II III IV I don't know what this means:(

    asked on February 4, 2018
  8. math HELP!

    Kara's custom tees experienced fixed costs of $300 and variable costs of $5 a shirt. write and equation that can be used to determine the total expenses encountered by kara's custom tee's. Let x be the number of shirts and let C(x) be the total cost of

    asked on January 27, 2013
  9. English

    Read this excerpt from Jonathan Swift’s A Modest Proposal. “I do therefore humbly offer it to public consideration that of the hundred and twenty thousand children already computed, twenty thousand may be reserved for breed, whereof only one-fourth

    asked on January 19, 2019
  10. physics

    You walk for 6.44 km with at a constant velocity of 2.55 m/s due west, turn around, and then walk with an average velocity of 0.440 m/s due east. From your starting point to your destination, your overall average velocity is 1.33 m/s due west. During the

    asked on September 22, 2016
  11. Math

    Thevolume of a right circular cone is 5 litres.calculate the volumes of the two parts into which the cone is divided by a plane parallel to the base,one-third of the way down from the vertex to the base.

    asked on May 14, 2017
  12. Art History

    In what way is the story of "The Qorikancha" temple evident in Jaune Quick-To-See Smith's "Trade (Gifts for Trading Land with White People)"? Symbolism in "Trade" relays how native culture was co-opted by Europeans Elements of the creator god Viracocha's

    asked on January 6, 2019
  13. Math

    Write z = 2(sqrt)2 + 2(sqrt)2i in polar form. z = 4(sqrt)2 (cos pi/4 + i sin pi/4) z = 4 (cos pi/4 + i sin pi/4) z = 4 (cos 5pi/4 + i sin 5pi/4) z = 4 (cos pi/2 + i sin pi/2) Write z = -6i in polar form. z = 6 cis 3pi/2 z = 6 cis pi/2 z = -6 cis 3pi/2 x =

    asked on April 28, 2018
  14. Math

    Write the first five terms of the sequence defined by the recursive formula a(n) = 2*(a(n - 1)) + 5 with a(1) = -3 -3, -10, -24, -43, -81 -3, -1, 3, 11, 27 -3, 2, 7, 12, 17 -3, 4, 18, 46, 102 I'm trying to do this the way I've always done them (and gotten

    asked on January 12, 2018
  15. economics

    What should Tom Sloane and U.S. Pharmaceutical of Korea do to improve collections from wholesalers?

    asked on June 24, 2008
  16. Physics

    After a 0.300-kg rubber ball is dropped from a height of 1.75 m, it bounces off a concrete floor and rebounds to a height of 1.50 m. (a) Determine the magnitude and direction of the impulse delivered to the ball by the floor. (b) Suppose the ball is in

    asked on March 10, 2020
  17. Math

    Which of the following expressions is equivalent to (cos(3x))/sin(x)cos(x))? csc(x) cos(2x) - sec(x) sin(2x) sec(x) cos(2x) - csc(x) sin(2x) sec(x) cos(x) - csc(x) sin(x) csc(x) cos(x) - sec(x) sin(x) This is my last question and I've tried solving it

    asked on March 13, 2018
  18. physics

    Three charges were positioned as shown in the figure below. If Q1=Q2=8uc and d=0.5m, determine q if the electric field at is zero.

    asked on April 8, 2020
  19. English

    "I compute that Dublin would take off annually about twenty thousand /carcasses/; and the rest of the kingdom (where probably they will be sold somewhat cheaper) the remaining eighty thousand." Which of these is nearest in meaning to the word /carcasses/,

    asked on January 18, 2019
  20. Biology

    Why does scenedesmus colony consist of 4,8 or 16 cells?

    asked on August 16, 2015
  21. English

    Which sentence has correct subject and verb agreement? A)We be planning to celebrate all night. B)Both of my older sisters plays softball. C)The frogs croaks in the pond all night long *** D)Neither Carla nor Tim plays in the marching band. I got C but my

    asked on October 21, 2019
  22. Physics

    If you disconnect the wires from the battery and then reconnect them at the opposite ends of the battery, how does that change the direction of the charge flow? The direction of the charge flow is the same as the question The direction of the charge flow

    asked on April 5, 2018
  23. Economics

    Suppose a university decides to alter its tuition schedule by separating its students based on how many years of college they have completed. Most university programs require four years to complete. First-year students would get a 13% tuition reduction.

    asked on October 17, 2017
  24. math

    What is the area of a regular 30-gon with a radius of 9mm? So far I know my interior angle is 6. That is all I can seem to figure out. Thanks!

    asked on March 8, 2016
  25. English (essay question)

    Hi, I'm doing an assignment which requires me to choose two of Mark Twain's quotes (from a certain page) and answer the following questions: 1. What is the essential cultural observation or situation being satirized? What clues lead you to this conclusion?

    asked on March 7, 2018
  26. Trigonometry

    The number of hours of daylight in a city in the northern hemisphere shows periodic behavior over time. - The average number of daylight hours is 12 - The maximum number of daylight hours is 14.4 - The period is 365 days - The day with the least sunlight

    asked on March 2, 2018
  27. Physics

    A ball thrown by Ginger is moving upward through the air. Which force diagram represents the forces on the ball? You may neglect the effects of air resistance. a) only down force b) only up force c) both forces d) both forces (but down is larger/longer). I

    asked on December 15, 2017
  28. Maths

    Sum of 4 terms in GP is 312 . Sum of 1st and 4th term is 252. Find the numbers.

    asked on February 23, 2017
  29. alg. Compounding periods.

    a loan requires that the 4% interest be compounded monthly for 5 years. find the number of compounding periods. 48 60 10 20 ________________________________________ Yolanda deposited $11,000 in a savings account that earns 3.5% onterest compounding daily.

    asked on March 12, 2015
  30. Math/ Compouded semiannually ?'s

    Jessica plans to purchase a car in one year at a cost of $30,000. How much should be invested in an account paying 10% compounded semiannually to have the funds needed. a. $27,210.90 b. $3,512.06 c. $24,793.50 d. $27,272.70 The Lee family plans to buy a

    asked on February 24, 2015
  31. math

    Find all values of c such that the limit exists lim x-->1 (x^2 + 3x + c) / (x-1)

    asked on September 19, 2011
  32. physics

    The curves on a race track are banked to make it easier for cars to go around the curves at high speed. Draw a free-body diagram of a car on a banked curve. From the motion diagram, find the direction of the acceleration. (a) What exerts the force in the

    asked on November 30, 2010
  33. Physics

    Mark's physics book is on the desk. Mark pushes horizontally (from the side) on the book, but the book does not move. Which force diagram represents the force on the physics book? You may neglect air resistance. a) A box with two arrows, one pointing up

    asked on December 15, 2017
  34. Math

    To convert temperatures from degrees Celsius to degrees Fahrenheit, you can use the function F(x)=9/5x+32 where x is the temperature in degrees Celsius. To convert temperatures from degrees Kelvin to degrees Celsius, you can use the function C(x)=x-273.15,

    asked on September 18, 2017
  35. math

    there are 3 pizzas .each child will get 1/4 of a many children will get pizza?

    asked on May 12, 2015
  36. Chemistry

    A concentration cell consists of two Sn/Sn2+ half-cells. The cell has a potential of 0.12V at 25 ∘C. What is the ratio of the Sn2+ concentrations in the two half-cells?

    asked on November 3, 2014
  37. math

    find the slope intercept form for the line satisfying the following conditions: y-intercept=2 y-intercept =2/3

    asked on January 27, 2013
  38. Chemistry

    How many grams of lithium will combine with 29.1 g of sulfur to form the compound Li2S?

    asked on March 20, 2011
  39. Biology

    The graph illustrates the activity level of three common digestive enzymes, across a range of pH values. Which enzyme is likely to be the most active in the acidic environment of the stomach? A) pepsin B) trypsin C) amylase D) pepsin and trypsin In

    asked on October 22, 2019
  40. Math

    The graph of f(x), a trigonometric function, and the graph of g(x) = c intersect at n points over the interval 0

    asked on March 19, 2018
  41. math

    if milk costs 3.45 per gallon how much does it cost per ounce

    asked on January 23, 2018
  42. English

    The Gettysburg Address The phrase "The world will little note nor long remember what we say here, but it can never forget what they did here" is ironic because a. everyone has forgotten the speech. b. the speech is famous and people have not forgotten what

    asked on January 22, 2018
  43. Precalc

    To which set(s) of numbers does the number sqrt -16 belong? Select all that apply. real numbers complex numbers*** rational numbers imaginary numbers*** irrational numbers I can only pick two, and that's what I think it is. Please check? Thanks

    asked on September 8, 2017
  44. math

    How does the volume of a rectangular prism change if the width is reduced to 2004-06-01-04-00_files/i0280000.jpg of its original size, the height is reduced to 2004-06-01-04-00_files/i0280001.jpg of its original size, and the length is reduced to

    asked on July 28, 2016
  45. math

    the lengths of the three sides of a right triangle R have odd integer values and two of the three sides have lengths 3 and 5. What is one possible length of the third side?

    asked on July 23, 2013
  46. US History

    A treaty was signed in 1842 to end the border dispute between the United States and Britain in Maine. Which best expresses the end result for Britain? the British lost all the territory in Maine The British territory was bigger than that of the U.S. The

    asked on March 1, 2013
  47. math

    lydia wrote 4_1/2 pages of her science report in one hour. what was her writing rate in pages per minute? (2-4 rates ratios and proportions)

    asked on October 21, 2010
  48. Physics

    Two wires with the same resistance have the same diameter but different lengths. If wire 1 has length L1 and wire 2 has length L2, how do L1 and L2 compare if wire 1 is made from copper and wire 2 is made from aluminum? The resistivity of copper is 1.7 ×

    asked on October 15, 2010
  49. History

    Why is the Latin language important to medicine and law? ALatin is the basis for the Romance languages BMany legal and medical terms used still today stem from Latin*** CLatin Americans moved from Rome and Greece and are able to speak Latin Dwater traveled

    asked on October 22, 2019
  50. math

    The value of a new car decreases 35 % in the first year. If a car costs $9,800, how much less would it be at the end of the first year?

    asked on July 14, 2019
  51. Math

    Which of the following values best approximates of the length of c in triangle ABC where c = 90(degrees), b = 12, and B = 15(degrees)? c = 3.1058 c = 12.4233 c = 44.7846 c = 46.3644 In triangle ABC, find b, to the nearest degree, given a = 7, b = 10, and C

    asked on January 26, 2018
  52. Physics

    The slope of a position vs. time graph represent's the object's... acceleration displacement position speed I thought the answer should be velocity, but that's not an option. Should it be displacement then?

    asked on December 12, 2017
  53. Math

    At a professional sports game, T-shirts are shot out of a small cannon into the crowd. Suppose a T-shirt is shot from 1 meter off the ground with an initial upward velocity of 20 meters per second. The height of the path of the shirt, in meters, is

    asked on March 29, 2017
  54. Physics

    Block A (Mass = 2.319 kg) and Block B (Mass = 1.870 kg) are attached by a massless string as shown in the diagram. Block A sits on a horizontal tabletop. There is friction between the surface and Block A. The string passes over (you guessed it) a

    asked on September 25, 2016
  55. psychology

    where does spanking fall between punishment and discipline

    asked on January 26, 2014
  56. US History

    What gave Andrew Jackson the power to remove the Cherokee from their land? Georgia state laws Acts of Congress two Supreme Court decisions treaties signed by the Cherokee Im thinking two Supreme Court decisions?

    asked on March 1, 2013
  57. math

    evaluate f(x) at the given values of x. f(x)=2. x=-11,5/2

    asked on January 27, 2013
  58. math

    a certain mountain has an elevation 19580 feet in 1907 the glacier on its peek covered 8 acres by 2002 this glacier had melted to 1 acre assume the glacier melted at a constant rate each year find this yearly rate

    asked on January 27, 2013
  59. Chemistry

    The equation of the line for a graph of voltage versus log[Cu2+] was y= - 0.0179x - 0.0015. The voltage of a solution with an unknown [Cu2+] was measured against the same reference cell, under the same conditions; the voltage was found to be 0.012 V.

    asked on June 15, 2011
  60. Chemistry

    A salt solution can be acidic, basic, or neutral. when dissolved in water, which of the following salts will not affect the pH: KCl, FeCl3, NaNO3, CaCO3, LiF, and NH4Br?

    asked on April 17, 2011
  61. World History

    How is it that the Roman Catholic Church was able to gain power in the Roman Empire and what effect did the shift of power have on the telling of the history of the world?

    asked on November 28, 2010
  62. Physics

    A concave mirror has a radius of curvature of 3.4 cm. (a) Determine the object position for which the resulting image is upright and seven times the size of the object. cm? (b) Draw a ray diagram to determine the position of the image. (Use a negative

    asked on November 18, 2010
  63. college physics

    What is the heat capacity of 20.0 kg of silver? kcal/K

    asked on April 18, 2010
  64. Human Geography

    Assuming that achieving replacement-level fertility is desirable, is the assumption of 0 years to reach replacement fertility realistic, optimistic, or pessimistic? Why? A) Because achieving replacement-level fertility will not drop until people desire

    asked on February 25, 2010
  65. social studies

    Political corruption can directly hurt a country’s economy because A. Citizens have to pay off politicians. B. It wastes money that can be invested C. Citizen lose confidence in their elected officials D. Government leaders may be forced out of power

    asked on May 12, 2020
  66. English

    What does "aching joys" mean?

    asked on March 1, 2020
  67. caluclus

    Find the inverse function f^-1 of the function f. What is the domain of f^-1? What is its range? f(x) = 5 tan (10x-2)

    asked on July 8, 2019
  68. Math

    Our math team had m students last year, but this year it has already n students! By what percent did the number of students grow?

    asked on May 22, 2019
  69. Science

    The Hoover Dam is a hydroelectric power plant that converts the energy of falling water into electricity. Which of the following determines the amount of potential energy of the water stored in the reservoir of the dam? Choose all that apply. A - the

    asked on December 5, 2018
  70. History

    During the cold war, people were afraid of communists, both outside and inside the United States. The red scare and McCarthyism that grew out of these fears was damaging to the American way of life. During the McCarthy years, many of the freedoms

    asked on February 21, 2018
  71. Math

    Justin wants to evaluate 3cot(-5pi/4). Which of the following identities can he use to help him? Select two answers. cot(-theta) = cot(theta) cot(-theta) = -cot(theta) cot(-theta) = cot(-theta) cot(theta + pi) = cot(theta) cot(theta + 2pi) = cot(theta)

    asked on February 12, 2018
  72. Math

    If theta is the smallest angle in a right triangle with side lengths of 3, 4, and 5 units, then what does sin theta equal? 3/4*** (???) 3/5 4/5 5/3

    asked on February 4, 2018
  73. Math

    Which of the following could be a coterminal angle for -5pi/4? 19pi/4 7pi/4 -17pi/4 -25pi/4 I've done my math twice, but I can't seem to get the right answer:( pls help?

    asked on January 30, 2018
  74. Math

    Calculate the sum of the infinite series 72 + 60 + 50 + 125/3 + ... 489 432 360 307 Can someone please help me with this one? I can never solve these on my own:(

    asked on January 12, 2018
  75. Math

    A rubber ball is dropped from the top of a building, which is 40 ft. above the ground. Each time the ball hits the sidewalk, it rebounds 77% of its previous height. How high will the ball rebound after its sixth bounce? Round your answer to the nearest

    asked on January 5, 2018
  76. Chemistry

    The following data was obtained by Odar Sverk when he completed this investigation: a) 220 mL of acid (0,1 M HCl) was added to two tablets of Divol , a brand of antacid. The total mass of the two tablets was 2.50 g. 15 mL of base was used to complete the

    asked on December 20, 2017
  77. Math

    A parabolic microphone used on the sidelines of a professional football game uses a reflective dish 24 inches wide and 6 inches deep. How far from the bottom of the disk should the microphone be placed? a.) 6 in b.) 5.8 in c.) 5.2 in d.) 4 in I tried

    asked on December 17, 2017
  78. Precalc

    The complex number -3 + 2i is one zero for a polynomial function. Which complex number must also be a zero for this function? -3 + 2i 3 + 2i -3 - 2i 3 - 2i I am very confused with what the question is exactly asking. Please help? Thanks

    asked on November 2, 2017
  79. English

    What do signaling phrases in a research paper identify to a reader? The author of a source The type of source The page number of a source The publication date of a source Couldn't it be either option a or c? I can only pick one, though. Please help? Thanks

    asked on September 18, 2017
  80. Math

    Solve. (-10x^3+30x-20) / (-5x+5) A) 2x^2-2x+4 B) -2x^2-2x-4 C) -2x^2+2x+4 D) 2x^2+2x-4*** Simplfy x/6x-x^2 A) 1/6-x; where x=0,6 ***** B) 1/6-x ; where x= 6 C) 1/6x ; where x = 0 D) 1/6 Simplfy x-2/x^2+4x-12 A) 1/x+6; where x=-6 B) 1/x+6; where x= -6,2***

    asked on June 16, 2017
  81. science

    Cobalt-60 has a 30 year half-life. How much of an 80 gram sample would remain after 60 years?

    asked on May 16, 2017
  82. History

    4. Which of the following represents elements of foreign policy? Select all that apply. declaring war

    asked on November 18, 2016
  83. Math/Stats

    The average monthly attendance to the senior citizen bowling league is 67 with a stdev of 6.5. What is the probability that a randomly selected day will see between 72 and 78 visitors?

    asked on April 6, 2016
  84. Math

    (5x^3y/20xy^5)^4 According to my teacher the answer is x^8/256y^16, but I don't understand how to get there.

    asked on February 25, 2016
  85. Strategies for the independent learner

    1.When you approach a text, you should A. survey it, using the technique called SQ3R. B. dive right in at the first page and read the assigned section. C. skip over words you don’t know. D. read only the boldface type. 7.You might want to review as you

    asked on May 20, 2015
  86. Strategies for the independent learner

    1.When you approach a text, you should A. survey it, using the technique called SQ3R. B. dive right in at the first page and read the assigned section. C. skip over words you don’t know. D. read only the boldface type. 2.The proctored exams for your

    asked on May 20, 2015
  87. Chemistry

    Consider the titration of 30.0 mL of 0.100 M NH3 with 0.150 M HCl. calculate the pH after the following volumes of titrant have been added:(a) 0mL (b) 10.0 mL (c) 19.5 mL (d) 20.0 mL (e) 20.5 mL (f) 30 mL

    asked on March 4, 2015
  88. Physics

    A person pushes on a doorknob with a force of 5N. The direction of the force is at an angle of 20 degrees from the perpendicular to the surface of the door. The doorknob is located .800m from axis of the hinges of the door. The door begins to rotate with

    asked on November 23, 2014
  89. physics

    A clock has a second hand whose tip rubs against the inside of the glass cover. If the frictional force between the glass cover and the tip of the second hand is 0.0010 N and the length of the hand is 6.5 cm, what is the minimum torque that must be applied

    asked on November 21, 2014
  90. Physics

    Two objects are moving in the xy-plane. No external forces are acting on the objects. Object A has a mass of 3.2 kg and has a velocity of Va= (2.3 m/s)i + (4.2m/s)j and object B has a mass of 2.9 kg and has a velocity of Vb= (-1.8m/s)i + (2.7m/s)j. Some

    asked on November 12, 2014
  91. Physics

    A mass of 2.0kg traveling at 3.0 m/s along a horizontal plane hits a relaxed spring 20cm away from it. The coefficient of kinetic friction is 0.3. The mass is slowed to zero velocity when the spring has been compressed. By how much the spring has been

    asked on November 9, 2014
  92. Science independent variable

    A scientist designed an experiment to test the effect of temperature on bacterial growth. He grew three different cultures of the bacterium E. coli under three heat lamps at different temperatures. What was the independent variable in this experiment?

    asked on September 3, 2014
  93. College science

    Im in Chem. but looks like physics.. If a rock climber accidentally drops a 70.5 g piton from a height of 295 meters, what would its speed be just before striking the ground? Ignore the effects of air resistance.

    asked on February 1, 2014
  94. physics..

    What is the maximum height achieved if a 0.800 kg mass is thrown straight upward with an initial speed of 40.0 m·s–1? Ignore the effect of air resistance.

    asked on February 1, 2014
  95. Chemistry

    What is the maximum height achieved if a 0.800 kg mass is thrown straight upward with an initial speed of 40.0 m·s–1? Ignore the effect of air resistance.

    asked on February 1, 2014
  96. Geography HELP

    HOw do I explain how you would make a scale map of a room in your home.

    asked on November 22, 2013
  97. Chemistry

    explain why glucose 1,6 bisphosphate would not be able to go through the aldolase reaction.

    asked on October 20, 2013
  98. Chemistry

    Explain using electron-pushing arguments why glycolysis must go through G6P to F6P step (C1 aldehyde to C1 ketone). Focus on the subsequent aldolase-catalysed reaction and explain why glucose 1,6 bisphosphate would not be able to go through the aldolase

    asked on October 19, 2013
  99. Chemistry

    Explain using electron-pushing arguments why glycolysis must go through G6P to F6P step (C1 aldehyde to C1 ketone). Focus on the subsequent aldolase-catalysed reaction and explain why glucose 1,6 bisphosphate would not be able to go through the aldolase

    asked on October 19, 2013
  100. Math 7th Geometery

    I have a complex figure like a U shape. I understand the formula for this is l x w = a Can you show me the steps? 31m is parael to 31m this would be the height (sides of the U)?? or is this the width? Length 69m Width is on the right top of U 23m. Inside

    asked on April 24, 2013


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