Most popular questions and responses by Jaime
  1. social studies - WW1

    in 1914, which neutral nations joined allies later? Also, which neutral nations joined central powers later? Why would Germany worry about the alliance between France and Russia? Based on the map, which alliance had a greater advantage in 1914? Explain

    asked on November 30, 2016
  2. Math

    A standard deck of cards is made up of four suits with 13 cards in each suit (total of 52 cards). If we randomly sample five cards from a standard poker deck, find the probability that all five cards selected are clubs.

    asked on June 21, 2010
  3. Physics

    Four identical masses of 800kg each are placed at the corners of a square whose side length is 10.0cm. What is the net gravitational force (magnitude and direction) on one of the masses, due to the other three? I think I have to separate the four masses

    asked on January 20, 2009
  4. Physict

    This question is similar to some on driver's-license exams: A car moving at 50 km/h skids 15 m with locked brakes. Show that with locked brakes at 150 km/h the car will skid 135 m.

    asked on April 8, 2014
  5. physics

    Air streams horizontally past a small airplane's wings such that the speed is 70.0m/s over the top surface and 60.0m/s past the bottom surface. If the plane has a wing area of 16.2m^2 on the top and on the bottom, what is the net vertical force that the

    asked on January 29, 2009
  6. physics

    A woman finds the front windshield of her car covered with ice at -12.6°C. The ice has a thickness of 4.80 10-4 m, and the windshield has an area of 1.25 m2. The density of ice is 917 kg/m3. How much heat is required to melt the ice?

    asked on April 14, 2008
  7. geometry

    The diagonal of a rectangle is 25 meters long makes an angle of 36° with one side of the rectangle. Find the area and the perimeter of the parallelogram.

    asked on March 2, 2017
  8. Physics

    A pilot maintains a heading due west with an air speed of 240 km/h. After flying for 30 min, he finds himself over a town that he knows is 150 km west and 40 km south of his starting point. a) What is the wind velocity, in magnitude and direction? b) What

    asked on May 18, 2015
  9. Calculus AB

    Let R be the region bounded by the graphs of y=sin(pi x) and y=(x^3)-4x, as shown in the figure above. (a) Find the area of R. (b) The horizontal line y=-2, x=2, x=-1. Write, but do not evaluate, an integral expression for the area.

    asked on March 11, 2011
  10. Math/Business

    n n "Suppose ∑ i = 21. and. ∑ i^3 = 441" i=1 i=1 i) Evaluate n Sn = ∑ [4i + (1/3) i^3)] i=1 ii) Determine the value of n." I got n = 6 / n = -7 using the "(n^2(n-1)^2)" formula but I'm not sure if it's right/how to do the first part. I'm very unsure

    asked on November 5, 2018
  11. math

    find the volume of a tent having the shape of a rectangular solid of length 13 ft, width 12 ft, and heihght 8 ft topped by a rectangular pyramid of the same width and length with height 5 ft

    asked on July 2, 2010
  12. science

    An athlete executing a long jump leaves the ground at a 27.7∘ angle and travels 7.60m.If this speed were increased by just 5.0%, how much longer would the jump be?

    asked on November 23, 2014
  13. English

    I need help identifying the main arguments in the essay as well as the supports used. I believe the thesis is: If children are taught their place in the environment they will look at other species with a sense of fellowship and community. I am also

    asked on March 15, 2008
  14. geometry

    The diagonal of a rectangle is 25 meters long makes an angle of 36 ° with one of the rectangle. Find the area and the perimeter of the parallelogram. how to find the b to arrive to the area?

    asked on March 2, 2017
  15. Physics

    In a Cavendish balance apparatus suppose that M1= 1.10Kg, M2= 25.0Kg, and the rod connecting the M1 pairs is 30.0cm long. If, in each pair, M1 and M2 are 12.0cm apart center-to-center, find (a) the net force and (b) the net torque (about the rotation axis)

    asked on January 19, 2009
  16. Physics

    The university skydiving club has asked you to plan a stunt for an air show. In this stunt, two skydivers will step out of opposite sides of a stationary hot air balloon 2,500m above the ground. the second skydiver will leave the ballon 20 seconds after

    asked on April 6, 2015
  17. Chemistry

    What is the balanced equation of HClO4(aq)+Sr(OH)2(aq)

    asked on December 21, 2010
  18. Calculus - Newton's Method

    Use the Newton's Method to approximate the real root of the equation: f(x)=x-2+cosx=0 a) What is the iterative equation of Newton's method of the given equation? b) Iterate the equation with starting point x1=5 until you get a repetition of the four digits

    asked on March 23, 2017
  19. Physics

    A roller-coaster car is moving at 20.0 m/s along a straight horizontal track. What is its speed after climbing a 15.0 m hill?

    asked on May 5, 2013
  20. algebra

    A 40 inch board is cut into two pieces so that the shorter piece is two-thirds of the length of the longer piece. What are the lengths of the two cut pieces?

    asked on October 28, 2012
  21. Physics

    1. Car A, with mass of 1250 kg, is travelling at 30 m/s to the east. Car B is a truck with mass of 2000 kg, travelling to the west at 25 m/s. Assume these two vehicles experience an inelastic collision but do not stick together, and Car A goes off 10 m/s

    asked on April 8, 2014
  22. Physics

    2. Boxcar A, with mass of 1500 kg, is travelling at 25 m/s to the east. Boxcar B has a mass of 2000 kg, and is initially at rest. The box cars collide inelastically and move together after they get stuck. What is their combined velocity?

    asked on April 8, 2014
  23. calculus area between three curves

    find the area of the region for 2y=4sqrt(x) , y=3, and 2y+3x=7

    asked on December 2, 2013
  24. Business Law

    Dale Emerson served as the chief financial officer for Reliant Electric Company, a distributor of electricity serving portions of Montana and North Dakota. Reliant was in the final stages of planning a takeover of Dakota Gasworks, Inc. a natural gas

    asked on April 27, 2010
  25. pre-algebra

    Which is heavier, The Thrust SCC that is 54 ft long and weighs 7 tons or the Spirit of America that is 47 ft long and weighs 4 tons?? The numbers need to be put into an inequality equation! Unless you have not adequately stated your question, no equation

    asked on July 6, 2005
  26. Science

    18 g of hydrochloric acid reacts with 15 g of calcium hydroxide produce calcium chloride and water.

    asked on April 26, 2016
  27. Trignonmetry

    Please find the exact values: Tan(-3p/4)= Sec(2p/3)= Csc(7p/4)= Cot(11p/6)= p=pie

    asked on July 13, 2008
  28. Science

    25 g of Iron (II) Oxide reacts with 25 g of Chloric acid to produce Iron (II) chlorate and water. a. Determine the limiting reactant b. Determine the excess reactant c. Determine the theoretical yield of water d. Determine how much excess reactant is left

    asked on April 26, 2016
  29. math

    Roberto and Luisa Barron Lopez each work full time jobs, and Luisa's mother, Carmena, collects a monthly pension of $628. Between the three of them, their total household income is $4238 each month. If Luisa earns $1772, how much does Roberto earn each

    asked on October 1, 2012
  30. Chemistry

    In a coffee cup calorimeter, 50.00 mL of HNO3 (aq) and 50.00 mL of KOH(aq) were mixed. The temperature of the resultant solution increased 6.5 C. What is the Delta H of this reaction?

    asked on April 8, 2012
  31. Statistics/Chi Square

    I have a question to do in which the efficacy of a drug used to treat panic disorder is tested. Patients are given a placebo for one week and then the drug for one week, and the number of panic attacks is measured for each week. The data looks like this:

    asked on February 29, 2012
  32. Math / Probability

    In a certian lottery, 4 differnt numbers between 1 and 11 inclusive are drawn. These are the winning numbers. A player selects 4 different numbers between 1 and 11. What is the probability that the player has all winning numbers?

    asked on July 24, 2010
  33. chem

    how do i write a balanced equation for the reaction for Calcium Carbide, CaC2, acetylene gas, C2H2, and calcium hydroxide, Ca(OH)2 are produced

    asked on April 13, 2010
  34. physics

    A superhero is running toward a skyscraper to stop a villain from getting away. As he is moving, he looks up at the top of the building and his line of sight makes a 33.0° angle with the ground. After having moved 300 m, he looks at the top of the

    asked on August 9, 2014
  35. Statistics

    For a math assignment we need to design a dice roll game with different expected values of winning. The game should require a player to make a bet on the sum of one roll of two dice. If the dice sum to that number, the player wins; otherwise, he loses. We

    asked on February 1, 2012
  36. Linear Algebra

    Let W be the set of all polynomials p(t) in P3 such that p(0)=0. Show that W is a subsapce of P3 and find a basis.

    asked on November 19, 2011
  37. English 3

    I'm writing an essay comparing and contrasting two of Edgar Allan Poe's poems, "Annabel Lee" and "The Raven". I'll be comparing and contrasting the theme, rhyme scheme, irony and the use of figurative language. I have an idea of what I will be writing but

    asked on August 18, 2009
  38. 9the Grade Honours English

    I need info on Aphrodite,Apollo,Atalanta,Perseus,Cerberus and the Minotaur for my honors English class.I have to make a book about them two pages per person.Please help!!! The links in this previous response by SraJMcGin should give you all the information

    asked on July 13, 2007
  39. algebra

    One sixth of a certain number and three-eighths of the same number total 13. What is the number

    asked on January 12, 2016
  40. math

    jenny's company has two photocopying machines, one of which is older and slower than the other. In fact, the newer machine can put out four-thirds as many copies as the older machine in the same amount of time. If, while running at the same time, together

    asked on October 1, 2012
  41. Physics

    a solid aluminum ingot weighs 89N in the air. what is its volume? (b) the ingot is suspended from a rope and totally immersed in water. What is the tension in the rope?

    asked on January 27, 2009
  42. Trignonmetry

    Is there a formula to find the correct asymptotes on y=3cos(4x+p/2)-3 p=pie Now I know that answer is -p/8

    asked on July 13, 2008
  43. Science

    A drop of oil (volume 0.05cm3) is released from a medicine dropper on to the calm surface of a pond where it spreads out to cover an area of 40cm2. Assume that the oil film has a uniform thickness equal to the diameter of a oil molecule. Calculate the

    asked on March 5, 2007
  44. Calculus

    Let F(x) = (x+1) / (x^2-16). Use the definition of the derivative to compute f'(x) and give its domain. Show all steps.

    asked on February 3, 2017
  45. algebra

    A: 7x+7y=-77 B: 20x-5y=-35

    asked on October 28, 2012
  46. Macro Eco

    The belief that monetary policy can be effective in changing aggregate demand and that the money supply is the critical monetary variable is associated with: Answer a Modern Keynesians. b Monetarists. c Supply-side economists. d New classical economists.

    asked on April 26, 2012

    Craig sees a glass with ice tea sitting on the table. He notices that there is a great deal of moisture on the outside of the glass and a puddle of water on the table. He asks his family what they think causes the water to form on the outside of the glass.

    asked on October 20, 2011
  48. math/probability

    For some reason I can not get my head around probability. Please show me how to work the problem not just the answers. A class has 11 students who are to be assigned seating by lot. What is the probability that the students will be arranged in order from

    asked on July 24, 2010
  49. physics

    a solid aluminum ingot weighs 89N in the air. what is its volume? (b) the ingot is suspended from a rope and totally immersed in water. What is the tension in the rope?

    asked on January 27, 2009
  50. Chemistry

    How do you convert umol/m3 to umol/m2?

    asked on October 28, 2008
  51. math: repost with corrections

    p. 942 #5 This is a three-part question: a. the graph y = f(x) in the xy-plane has parametrization x=x, y=f(x), and vector formula r(x) = xi + f(x)j. Use this to show that if f is twice-differentiable, then k(x) = ((absvalue f''(x))/[1+((f'(x))^2]^3/2 b.

    asked on December 10, 2007
  52. math

    Hi This is a three-part question: a. the graph y = f(x) in the xy-plane has parametrization x=x, y=f(x), and vector formula r(x) = xi + f(x)j. Use this to show that if f is twice-differentiable, then ((absvalue f''(x))/[1+((f'(x))^2]^3/2 b. use the formula

    asked on December 8, 2007
  53. Math

    The greater of two consecutive even integers is six less than twice the smaller. Find the integers. The greater of two consecutive even integers is six less than twice the smaller. Find the integers How about x + 2 = 2x - 6 almost .. it's x + (x+2)=2x-2

    asked on June 3, 2007
  54. Chemistry

    How do can you find the difference between these acids/bases with only one indicator? We have 0.1M NaOH, H2SO4, HCl, AlCl3, and Na2CO3. We know the pH of all the solutions (AlCl3 = 2.9, H2SO4 = 0.7, HCl = 1, Na2CO3 = 11.8, NaOH = 13). We only can use 1

    asked on May 11, 2016
  55. math

    Rebecca has a lanyard that is 16.4 inches long. She cuts the lanyard in 3.5 inch pieces. How many whole pieces did she cut?

    asked on October 12, 2015
  56. Trig

    I need to the steps to get (1-sinx)(1+sinx)=cos^2 x

    asked on October 28, 2014
  57. Math


    asked on September 15, 2013
  58. Chemistry

    Solution A is 2.40M. 20mLs of solution A is transferred to a 250mL volumetric flask and diliuted to volume with water. What is the concentration of the diluted solution?

    asked on April 25, 2013
  59. math


    asked on January 24, 2013
  60. algebra

    *simplifying rational expressions a. 6x+12/4-x b. 3x^2/12-2x

    asked on November 13, 2012
  61. Geometry

    Use the special triangles to find the exact values of the following: 1) csc45degrees 2)sec30degrees 3)longest side of a 30-60-90 triangle if the side opposite the 60degree angle is 5radical3

    asked on September 2, 2011
  62. algebra


    asked on September 9, 2010
  63. math/ measurment

    What is the measure of the point angle for a star-shaped polygon with 8 points and a dent angle of 130 degrees? Is there a formula to figure this?

    asked on July 24, 2010
  64. math

    how may polygon arrangments does a semi-regular tessellation have? a) exactly three, b) exactly two or three, c) exactly four, d) exactly two of four

    asked on July 2, 2010
  65. His115

    What political events and social viewpoints made a federal constitution and government essential?

    asked on December 2, 2009
  66. math

    What is the product of 65.5 ' 0.2?

    asked on August 2, 2009
  67. Biochem

    Describe the one dehydration reaction in glycolysis. Include reactants, products, enzyme, and which step it is. I know that it is step 6 and I believe that the reaction uses glyceraldehyde-3-phosphate dehydrogenase to convert glyceraldehyde-3-phosphate

    asked on April 6, 2009
  68. Statistics

    X = 7 and SX2 = 21. A new variable Y is created by multiplying each X by 3. What are SY and SY2 equal to ? I do not understand.

    asked on January 17, 2009
  69. Physics

    A 67.0 kg crate rests on a level floor at a shipping dock. The coefficients of static and kinetic friction are .800 and .460 respectively. A) what horizontal pushing force is required to just start the crate moving? B) What horizontal pushing force is

    asked on September 2, 2008
  70. Math

    The greater of two consecutive even integers is six less than twice the smaller. Find the integers. Let the smaller be x. That means that the larger is x+2. From your statement x+2=2x-6 Solve for x. I hope this helps. Thanks for asking.

    asked on June 3, 2007
  71. Science help please...

    Each element has a different set of energy levels. Use this fact to explain why the colour of the light emitted by an element in the gaseous stare is characteristic of the element? Ive read and researched Quantum physics for over a week now and i still

    asked on March 5, 2007
  72. Science

    How does the mass of the moon and the earth help the moon stay in its orbit around the earth?

    asked on February 22, 2018
  73. Math - Calculus

    Compute the sum: 81 ∑ (2i-1) i=1

    asked on April 4, 2017
  74. Calculus

    The point on the parabola y=x^2 that is closest to the point (2,1/2) is (___,___). The distance between the two points is _______.

    asked on March 28, 2017
  75. calculus

    find the limit without using L'Hopital's Rule Lim(X->-4) (16-x^2 / x+4)

    asked on January 25, 2017
  76. Math

    Cheryl does a 2 mile warm up trail run at one rate for half of her workout. In the same amount of time she runs an additional 3 miles at a rate that is 2 mph faster. Find Cheryl's rate for her 2 mile warm-up run and for the 3 mile portion of her run.

    asked on November 22, 2016
  77. Math

    Which is greater, the greatest whole number with 4 digits or least whole number with 5 digits

    asked on August 29, 2016
  78. alegebra

    A cup of coffee milk is 35% coffee syrup with a second cup of coffee milk that is 65% coffee syrup. How many kilograms of each cup of coffee milk must be combined to get 20 kilograms of coffee milk that is 41% coffee syrup

    asked on January 19, 2015
  79. English

    What is one example of the Gothic characteristic morbidity ? Please help me

    asked on November 28, 2014
  80. Math

    taxi company has 31 drivers and now has 43 how to find the percentage increase or decrease.

    asked on March 5, 2014
  81. language arts

    What would a flow map look like on the book The Hunger Games?

    asked on September 22, 2013
  82. Math


    asked on September 15, 2013
  83. Math

    Y=2x^2 ;(1,2) ,(3,18)

    asked on September 15, 2013
  84. Math


    asked on September 12, 2013
  85. Math

    5x+1/7 -2x-6/4

    asked on September 11, 2013
  86. logic

    what is the truth value of the sentence "P v ~ P"

    asked on June 26, 2013
  87. math

    What is (-2)^2 What is (-2)^3

    asked on December 12, 2012
  88. Math

    In a right triangle, the middle angle is 12 more than twice the smallest angle. What are the measures of the smallest and middle angles?

    asked on October 9, 2012
  89. math

    on her first two math tests, Gracie has an average score of 86. If she got a score of 92 on the first test, what is her score on the second test?

    asked on September 29, 2012
  90. trig

    What is cosx=1/2?

    asked on March 22, 2012
  91. Math

    A cafe holds 300 coffee mugs. 175 of those coffee mugs do not have handles. Estimate the percent of mugs that have handles.

    asked on October 30, 2011
  92. Geometryy

    given that sec theta = radical13/whole number 3, and csctheta

    asked on September 2, 2011
  93. chem

    if you cann get 5candies for 7dollars, then how many candies will 33 dollars get you?

    asked on February 10, 2010
  94. critical thinking

    I have 4 out of 50 questions left...I cannot figure out the last two rhetorical questions, or the last two fallacy questions. What type of rhetorical device are these? 1. Very little research has been done using properly matched groups with a control

    asked on May 31, 2009
  95. accounting

    for each of the following items, give an example of a business transaction that has described effect on the accounting equation: Increase an asset and increase a liability. Increase one asset and decrease another asset. Decrease an asset and decrease

    asked on July 27, 2008
  96. english

    Is time, summer and winter concrete or abstract words?

    asked on May 22, 2008
  97. Cal

    circle x^2 +y^2 = 1. r(t) = (sint)i +(cost)j at both pi/4 and pi/2 Find velocity & acceleration Thx!

    asked on December 8, 2007
  1. American History

    Mean teacher! I would hate to be your student!

    posted on July 9, 2019
  2. math

    The answer is 87.5%.

    posted on January 30, 2019
  3. English

    They needed some way to keep track of what they owned.

    posted on November 28, 2017