Randy

Popular questions and responses by Randy
  1. Math

    sec 7pi/4 without a calculator Find the exact answer

    asked on November 7, 2014
  2. Chemistry

    A selenium atom (Se) would form its most stable ion by the 1. loss of 2 electrons. 2. gain of 1 electron. 3. loss of 1 electron. 4. loss of 7 electrons. 5. gain of 2 electrons. Help please and tell me how you got the answer. Thanks!

    asked on October 29, 2009
  3. Statistics

    A box contains five numbered balls (1,2,2,3 and 4). We will randomly select two balls from the box (without replacement). (a) The outcome of interest is the number on each of the two balls we select. List the complete sample space of outcomes. (b) What is

    asked on March 12, 2013
  4. math

    the absolute value of an integer is always greater than the integer. True or False?

    asked on January 27, 2012
  5. Physics

    Two horizontal forces, F1-> and F2-> , are acting on a box, but only F1->is shown in the drawing. F2-> can point either to the right or to the left. The box moves only along the x axis. There is no friction between the box and the surface. Suppose that

    asked on February 13, 2013
  6. ALGEBRA

    What are the odds in favor of drawing face card from an ordinary deck of cards? to

    asked on May 23, 2012
  7. ALGEBRA

    The product of two consecutive positive even numbers is 528. What are the numbers? (Enter solutions from smallest to largest.) and

    asked on April 25, 2012
  8. geometry

    The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2

    asked on January 17, 2012
  9. chemistry

    Isotonic saline is 0.89% NaCl (w/v). Suppose you wanted to make 1.0 L of isotonic solution of NH4Cl. What mass of NH4Cl would you need? Question 23 options: 1.6 g 8.1 g 8.9 g 54 g

    asked on October 30, 2014
  10. Trig / Calc

    What angle (in degrees) corresponds to 18.96 rotations around the unit circle? Enter the exact decimal answer.

    asked on October 23, 2014
  11. geometry

    Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees

    asked on January 17, 2012
  12. Chemistry

    What is the percent by mass of C in methyl acetate (C3H6O2)? The molecular weight of carbon is 12.0107 g/mol, of hydrogen 1.00794 g/mol, and of oxygen 15.9994 g/mol. Answer in units of %. Please work it out for me so I totally understand it. Thanks!

    asked on December 6, 2009
  13. Word Problem

    Assume that the mathematical model C(x) = 16x + 130 represents the cost C, in hundreds of dollars, for a certain manufacturer to produce x items. How many items x can be manufactured while keeping costs between $525,000 and $781,000? Thanks in advance!

    asked on February 18, 2009
  14. Statistics/Probability

    So I tried solving the first one and apparently failed miserably, attempted both twice and got it wrong each time and I have one submission attempt left, so any help is definitely appreciated! 1. Hotels R Us has kept the following recordes concerning the

    asked on May 21, 2014
  15. physics

    A golfer hits a shot to a green that is elevated 3.0 m above the point where the ball is struck. The ball leaves the club at a speed of 16.8 m/s at an angle of 30.0¢ª above the horizontal. It rises to its maximum height and then falls down to the green.

    asked on October 6, 2011
  16. Physics

    To move a large crate across a rough floor, you push on it with a force at an angle of 21 below the horizontal, as shown in the figure. Find the acceleration of the crate if the applied force is 400 , the mass of the crate is 32 and the coefficient of

    asked on March 6, 2011
  17. chemistry

    The solubility of Na3(PO4) is 0.025 M. What is the Ksp of sodium phosphate?

    asked on November 11, 2015
  18. math

    order the numbers from least to greatest. _ 1 4/5, 1.78, 1 5/6, 7/4, 1.7, 1 8/11 I am confused on going back and forth between decimals and fractions.

    asked on September 11, 2014
  19. Chemistry

    Help with lab report Need Help finishing my lab report.KNOWN VALUES ARE V OF HCL=50ML,M=2.188.V OF NAOH=55.3ML,M=2.088.INTIAL TEMP FOR HCL=22.5C,NAOH IS 23C.this is for part A: Mass of final NACL solution assuming that the density of a 1 M Nacl solution is

    asked on October 26, 2012
  20. Statistics

    How do frequency tables, relative frequencies, and histograms showing relative frequencies help us understand sampling distributions? A. They help us to measure or estimate of the likelihood of a certain statistic falling within the class bounds. B. They

    asked on September 26, 2010
  21. physics

    consider a pair of planets that find the distance between them is decreased by a factoer of 5. Show that the force between them becomes 25 times as strong?

    asked on November 14, 2008
  22. Chemistry

    What mass of oxygen is consumed when 1.73L of carbon dioxide (STP) are produced in the following equation. C4H8 + 6 O2 > 4 CO2 + 4 H2O please help and show your work. My answer for this problem is 11.12g/O2. I have no confidence in my answer.

    asked on April 16, 2012
  23. Chemistry

    What volume of carbon monoxide gas (at STP) is needed when 1.35 Moles of oxygen gas react completely in the following equation. 2CO + O2 > 2CO2 please show your work I'm having trouble with Gas Stoichiometry.

    asked on April 16, 2012
  24. ALGEBRA

    Select all statements that are true. (log_b\(A\))/(log_b\(B\))=log_b\(A-B\) (If ) log_1.5\(8\)=x, text( then ) x**(1.5) =8. log\(500\) text( is the exponent on ) 10 text( that gives ) 500. text (In )log_b\(N\), text( the exponent is )N. text( If )

    asked on April 16, 2012
  25. math

    Ray OX bisects angle AOC and angle AOX =42 degrees, angle AOC is: 42 degrees 84 degrees 21 degrees 68 degrees

    asked on January 16, 2012
  26. statistics

    A USU today survey found that of the gun owners surveyed 275 favor stricter gun laws. Test the claim that the majority (more than 50%) of gun owners favor stricter gun laws. Use a .05 significance level.

    asked on December 7, 2010
  27. chemistry

    How many moles of Cu are needed to react with 3.50 moles of AgNO3?

    asked on October 30, 2010
  28. Geometry

    How do you find the coordinates of the image of J (-7,-3) after the translation (x,y) (x-4,y+6)

    asked on September 14, 2015
  29. Pre-Calculous (Trig)

    The Singapore Flyer, currently the world's largest Ferris wheel, completes one rotation every 37 minutes.1 Measuring 150 m in diameter, the Flyer is set atop a terminal building, with a total height of 165 m from the ground to the top of the wheel. When

    asked on October 17, 2014
  30. chemistry

    While in Europe, if you drive 105km per day, how much money would you spend on gas in one week if gas costs 1.10 euros per liter and your car's gas mileage is 22.0mi/gal? Assume that 1euro = 1.26 dollars.

    asked on September 8, 2013
  31. Math

    Search Results for "Ruth has some money in a savings account. after the bank adds 5% interest to her account , she has $126. How much was in her account before the interest was added" How do i write this in an equation?

    asked on September 3, 2013
  32. ALGEBRA

    Solve the equations. ((a) ) (2 L)/(5) = 2 L = ((b) ) 4 = (4 M)/4 + 8 M =

    asked on April 16, 2012
  33. ALGEBRA

    (a) Write the expression in terms of natural logarithms. (Express all logarithmic functions in terms of ln(x) in your answer.) log_(8.5) \(127\) = Give a calculator approximation (correct to four decimal places). log_(8.5) \(127\) ~=

    asked on April 16, 2012
  34. ALGEBRA

    Solve the equations by finding the exact solution. (a) 1 = x - 1 (B)

    asked on April 16, 2012
  35. ALGEBRA

    Solve the equation. 2(W + 4) - 3(W + 2) = 0

    asked on April 11, 2012
  36. Biology

    the biome with the fewest seasonal changes is?

    asked on October 29, 2011
  37. chemistry

    When I am writing a half-reaction with a corroding metal that is in Deaerated water, what can i assume there to be in the water that can show up in a half-reaction?

    asked on November 11, 2010
  38. chemistry

    When I am writing a half-reaction with a corroding metal that is in deionized water, what can i assume there to be in the water that can show up in a half-reaction?

    asked on November 11, 2010
  39. physics

    A log is floating on swiftly moving water. A stone is dropped from rest from a 84-m-high bridge and lands on the log as it passes under the bridge. If the log moves with a constant speed of 3.6 m/s, what is the horizontal distance between the log and the

    asked on September 8, 2010
  40. college

    what is ADE/CLR?

    asked on January 20, 2010
  41. English

    I have to write an essay for Heart of Darkness by Joseph Conrad. The question says in some works of literature a character who appears brifely or doesn't appear at all is a significant presence. Show how such a character functions in the work. You may wish

    asked on November 14, 2006
  42. math

    What is (f+g)(x)? f(x)=x^2−36 g(x)=x^3+2x^2−10

    asked on April 9, 2018
  43. Physics! NEED HELP!

    A 40 kg girl runs up a flight of stairs that is 34 m high. How much work does this require?

    asked on October 19, 2017
  44. chemistry

    What is the pH of a buffer solution that has CH3CO2H=0.68 M and CH3CO2- =0.58 M, and has 0.01 M concentration of H2SO4 added to it? Ka of acetic acid is 1.8x10-5

    asked on November 11, 2015
  45. chemistry

    What is the pH of a 0.5 M solution of NaHCO3? Kb = 2.4x10-8 (base)

    asked on November 11, 2015
  46. Math Trig

    A kite flier wondered how high her kite was flying. She used a protractor to measure an angle of 40 degrees from level ground to the kite string. If she used a full 120-yard spool of string, how high, in feet, was the kite? (Disregard the string sag and

    asked on October 24, 2014
  47. SAVE ME ( MATH)

    function p(t) has a domain of 1 less than or equal to t less than or equal to 12 range of -40 < p less than or equal to 160 Find the domain and range for. Enter the exact answers A) P(1/4t+4) B) -1/10p(2t)+46

    asked on October 17, 2014
  48. statistics

    You can answer any questions from the questions on an exam. In how many different ways can you choose the questions, assuming that the order in which you choose the questions is irrelevant?

    asked on August 6, 2014
  49. Statistics/Probability

    So I tried solving the first one and apparently failed miserably, attempted both twice and got it wrong each time and I have one submission attempt left, so any help is definitely appreciated! 1. Hotels R Us has kept the following recordes concerning the

    asked on May 20, 2014
  50. math

    Trail mix is sold in 1-pound bags. Mary will buy some trail mix and re-package it so that each of the 15 members of her hiking club gets one 25_ -pound bag. How many 1-pound bags of trail mix should Mary buy to have enough trail mix without leftovers?

    asked on May 11, 2014
  51. chemistry

    The conversion factor relating miles to meters is 1 mile= 1610m The speed of light is 3.00×10^8 m/s. How fast is this in miles per hour (miles/h \rm miles/h)?

    asked on September 8, 2013
  52. Statistics

    *Give all probabilities to two decimal places. Three daily newspapers are published in a large city. Suppose we have the following facts about the people in the city: 60% read Newspaper A. 34% read Newspaper C. 72% read Newspaper A or Newspaper B. 18% read

    asked on March 12, 2013
  53. Physics

    A small lead ball, attached to a 1.50-m rope, is being whirled in a circle that lies in the vertical plane. The ball is whirled at a constant rate of three revolutions per second and is released on the upward part of the circular motion when it is 0.75 m

    asked on February 26, 2013
  54. math

    a car weighing 15000N rounds a curve of 60m. radius banked at angle of 30 degrees.find the frictional force acting on the tires when the car is travelling at 100kph.The coefficient of friction between the tires and the road is 0.90.

    asked on February 23, 2013
  55. Physics

    A space probe has two engines. Each generates the same amount of force when fired, and the directions of these forces can be independently adjusted. When the engines are fired simultaneously and each applies its force in the same direction, the probe,

    asked on February 13, 2013
  56. Science

    Nathaniel is driving his sports car down a four lane highway at 40m/s. He comes up behind a slow moving dumptruck and decides to pass it in the left hand lane. If Nathaniel can accelerate at 5m/s^2, how long will it take for him to reach the speed of

    asked on January 14, 2013
  57. Algebra

    - There are less than 40 members of the Landowners Association. These memebers vote on various proposals. All the members were present at a meeting and all voted on each of two proposals. On the first proposal 4 times as many memebers voted yes to those

    asked on December 5, 2012
  58. math

    evaluate the following expression _(5)P_0=

    asked on August 28, 2012
  59. Homework test

    An artifact was found and tested for its carbon-14 content. If 70% of the original carbon-14 was still present, what is its probable age (to the nearest 100 years)? Use that carbon-14 has a half-life of 5,730 years.

    asked on June 17, 2012
  60. math

    A pie plate has a diameter of 22 cm. How much counter space is needed to display 8 pies?

    asked on June 15, 2012
  61. ALGEBRA

    Make a 5% offer on a Volkswagen New Beetle that has a sticker price of $22,120 and a dealer cost of $20,862. (Round your answer to the nearest dollar.)

    asked on May 6, 2012
  62. chemistry

    how many grams of NaOH would be needed to make 896mL of a 139 M solution

    asked on April 30, 2012
  63. chemistry

    calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq)

    asked on April 29, 2012
  64. chemistry

    calculate the molarity of an acetic acid solution if 39.96 mL of the solution is needed to neutralize 136mL of 1.41 M sodium hydroxide. the equation for the reaction is HC2H3O2(aq) + NaOH(aq) > Na+(aq) + C2H3O2(aq) +H2O(aq)

    asked on April 29, 2012
  65. Chemistry

    the heat of fusion water is 335J/g,the heat of vaporization of water is 2.26kJ/g, the specific heat of water is 4.184J/deg/g. how many grams of ice at 0 degrees could be converted to steam at 100 degrees C by 9,574J

    asked on April 27, 2012
  66. ALGEBRA

    Graph the equation. x = -6

    asked on April 25, 2012
  67. ALGEBRA

    Use the definition of logarithm to simplify each expression. text((a) )log_(3b) \(3b\) text((b) )log_(4b) \((4b)^6\) text((c) )log_(7b) \((7b)^(-11)\)

    asked on April 25, 2012
  68. chemistry

    the heat of fusion water is335 J/g. The heat of evaporization of water is 2.26 kJ/g, the specific heat of ice is 2.05 J/Deg/g, the specific heat of steam is 2.08 J/deg/g and the specific heat of liquid water is 4.184 J/deg/g. How much heat would be needed

    asked on April 24, 2012
  69. chemistry

    the heat of vaporization of water is 2.26kJ/g. how much heat is needed to change 2.55 g of water to steam?

    asked on April 20, 2012
  70. Chemistry

    what volume of ammonia gas will be produced when 8.01 L of hydrogen react completely in the following equation. N2 + 3H2 > 2NH3 this stuff is so confusing because one little word seems to change the entire process for solving.

    asked on April 17, 2012
  71. Chemistry

    what volume of ammonia gas will be produced when 1.26L of nitrogen react completely in the following equation? N2 + 3H2 > 2NH3 Please if someone can just give me the order of operation it will be much appreciated because chemistry is just not my forte.

    asked on April 16, 2012
  72. ALGEBRA

    3x2 = 17x + 6

    asked on April 16, 2012
  73. ALGEBRA

    Consider the following expression. 3(x - 2) - 9(x**2 + 7 x + 4) - 5(x + 8) (a) Simplify the expression.

    asked on April 16, 2012
  74. ALGEBRA

    The Greek God Zeus ordered his blacksmith Hephaestus to create a perpetual water-making machine to fill Zeus' mighty chalice. The volume of Zeus' chalice was reported to hold about one hundred and fifty sextillion gallons (that is a fifteen followed by

    asked on April 16, 2012
  75. ALGEBRA

    Evaluate the given expressions (to two decimal places). (a) ) log((23.0) (b) ) log_(2) \(128\) (c) ) log_(9) \(1\)

    asked on April 16, 2012
  76. ALGEBRA

    Use the definition of logarithm to simplify each expression. (a) )log_(3b) \(3b\) ((b) )log_(8b) \((8b)^6\) (c) )log_(10b) \((10b)^(-13)\)

    asked on April 16, 2012
  77. ALGEBRA

    Evaluate the given expressions (to two decimal places). (a) log((23.0) ((b) log_(2) \(128\) text((c) ) log_(9) \(1\)

    asked on April 16, 2012
  78. ALGEBRA

    Find a simplified value for x by inspection. Do not use a calculator. (a) log5(25) = x (b) log2(16) = x

    asked on April 16, 2012
  79. ALGEBRA

    Contract the expressions. That is, use the properties of logarithms to write each expression as a single logarithm with a coefficient of 1. text ((a) ) ln\(3\)-2ln\(4\)+ln\(8\) ((b) ln\(3\)-2ln\(4+8\) (c) )ln\(3\)-2(ln\(4\)+ln\(8\))

    asked on April 16, 2012
  80. ALGEBRA

    Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3

    asked on April 16, 2012
  81. ALGEBRA

    ln\(e\) = ln\( sqrt(2)/x \) -ln\(e\)

    asked on April 16, 2012
  82. ALGEBRA

    (1)/(2) log\(x\) - log\(10000\) = 4

    asked on April 16, 2012
  83. ALGEBRA

    Solve the equations by finding the exact solution. ln\(x\) - ln\(9\) = 3

    asked on April 16, 2012
  84. ALGEBRA

    A seismograph 300 km from the epicenter of an earthquake recorded a maximum amplitude of 5.4 multiplied by 102 µm. Find this earthquake's magnitude on the Richter scale. (Round your answer to the nearest tenth.)

    asked on April 16, 2012
  85. ALGEBRA

    Find the number of decibels for the power of the sound. Round to the nearest decibel. A rock concert, 5.21 multiplied by 10-6 watts/cm2

    asked on April 16, 2012
  86. Algebra II

    if y varies directly as x, if y=80 when x=32, find x if y=100

    asked on March 22, 2012
  87. geometry

    The altitude of an equilateral triangle is 7 square root 3 units long. The length of one side of the triangle is ____ units. 7 14 14 square root 3 7 square root 3 over 2

    asked on January 16, 2012
  88. math

    1. find the lateral area of a right prism whose altitude measures 20 cm and whose base is a square with a width 7 cm long. 2. the volume of a rectangular solid is 5376 cubic meters, and the base is 24 meters by 16 meters. find the height of the solid. 3. a

    asked on January 7, 2012
  89. physics

    A jetliner can fly 5.57 hours on a full load of fuel. Without any wind it flies at a speed of 2.43 x 102 m/s. The plane is to make a round-trip by heading due west for a certain distance, turning around, and then heading due east for the return trip.

    asked on October 6, 2011
  90. physics

    Relative to the ground, a car has a velocity of 14.4 m/s, directed due north. Relative to this car, a truck has a velocity of 24.8 m/s, directed 52.0° north of east. What is the magnitude of the truck's velocity relative to the ground?

    asked on October 6, 2011
  91. physics

    A ball is thrown upward at a speed v0 at an angle of 59.0¢ª above the horizontal. It reaches a maximum height of 8.7 m. How high would this ball go if it were thrown straight upward at speed v0?

    asked on October 6, 2011
  92. physics

    A speedboat starts from rest and accelerates at +1.68 m/s2 for 5.43 s. At the end of this time, the boat continues for an additional 8.16 s with an acceleration of +0.475 m/s2. Following this, the boat accelerates at -0.866 m/s2 for 7.54 s. (a) What is the

    asked on October 3, 2011
  93. algebra

    what is the slope of line that passes through (-3,-8) and (0,6)

    asked on May 25, 2011
  94. physics

    Driving in your car with a constant speed of 12 m/s, you encounter a bump in the road that has a circular cross-section. If the radius of curvature of the bump is 35 m, find the apparent weight of a 63-kg person in your car as you pass over the top of the

    asked on March 6, 2011
  95. Math

    What is the surface area of a right circular cylinder with base circle of radius of 5m and height of the cylinder 10m?

    asked on January 18, 2011
  96. statistics

    Find z such that 20.3% of the standard normal curve lies to the right of z. 0.831 0.533 -0.533 -0.257 0.257

    asked on September 26, 2010
  97. statistics

    Assume that about 45% of all U.S. adults try to pad their insurance claims. Suppose that you are the director of an insurance adjustment office. Your office has just received 110 insurance claims to be processed in the next few days. What is the

    asked on September 26, 2010
  98. economics

    Explain how absolute advantage and comparative advantage differ?

    asked on July 30, 2010
  99. Pre-cal

    Please determine the following limit if they exist. If the limit doe not exist put DNE. lim 2x^3 / x^2 + 10x - 12 x->infinity. Thanks.

    asked on May 10, 2010
  100. geometry

    If a rectangle has an area of 64 square units and a length of 16 units, what is its width? If necessary, round your answer to two decimal places.

    asked on February 25, 2010

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