Popular questions and responses by brooke
  1. History

    How did European imperialism influence Asia? -Low Chinese demand for European goods led British traders to deal in opium, creating addicts and triggering a war. -Chinese merchants transported European goods from ports to the interior of China,

    asked on July 9, 2020
  2. physics

    Calculate the net charge on a substance consisting of a combination of 4.3 multiplied by 1013 protons and 2.5 multiplied by 1013 electrons.

    asked on April 10, 2012
  3. math: easy

    A bag held 3 red marbles, 1 blue marble, and 4 yellow marbles. Lee drew a red marble and did not replace it. What is the probability of drawing a yellow marble next?

    asked on March 27, 2008
  4. Psychology

    With respect to the theory of cognitive dissonance, people can hold contradictory ideas in their minds. If you become aware of the dissonance between two ideas, you could pursue which of the following strategies to reduce the dissonance? B. You can modify

    asked on July 31, 2016
  5. Physics

    Two objects, one of mass 3kg moving at 2m/s, the other of mass 5kg and speed of 2m/s move towards each other and collide in a head on collision. If the collision is perfectly inelastic, find the speed of the objects after the collision.

    asked on December 21, 2014
  6. Chemistry

    Please help me N2O5(g) + H2O(l) --> 2HNO3(l) delta H° = -76.2 kJ H2O(l) --> H2(g) + 1/2O2(g) delta H° = 286.0 kJ 1/2N2(g) + 3/2O2(g) + 1/2H2(g) --> HNO3(l) delta H° = -174.0 kJ Calculate delta H° for the reaction 2N2O5(g) --> 2N2(g) + 5O2(g)

    asked on October 27, 2015
  7. Biology

    In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be: A The distance the golf ball traveled B The type of material the club is made of C The material the golf ball was

    asked on January 11, 2012
  8. English

    Pablo insists that a conclusion should reinforce the thesis statement. Patrice says that the conclusion should follow logically from the introduction. Who is correct? A. Both Pablo and Patrice are correct. B. Neither Pablo nor Pam is correct. C. Only Pam

    asked on October 21, 2016
  9. algebra

    is the average of 27 - x, x - 8, and 3x + 11 is y, what is the average of 2y and 2y/3?

    asked on June 7, 2010
  10. Math

    Which graph represents this system of inequalities? y _ -2

    asked on October 21, 2018
  11. math

    Jose invests money in two simple interest accounts. He invests twice as much in an account paying 10% as he does in an account paying 7%. If he earns $94.50 in interest in one year from both accounts combined, how much did he invest altogether? Total

    asked on January 9, 2016
  12. Writing Skills

    Which of the following statements about connecting paragraphs is correct? A. A good connection between two paragraphs is an implied transition. B. Two paragraphs may be joined by an action verb. C. You can use a pointing word that that refers to a word in

    asked on December 9, 2015
  13. Math

    A science class has 3 girls and 3 boys in the seventh grade and 4 girls and 1 boy in the eighth grade. The teacher randomly selects a seventh grader and an eighth grader from the class for a competition. What is the probability that the students she

    asked on February 14, 2016
  14. math: probability

    A locker combination has three nonzero digits, and digits cannot be repeated. If the first two digits are even, what is the probability that the third digit is even?

    asked on March 27, 2008
  15. Chemistry

    A 25.0 mL sample of a 0.100 M solution of aqueous trimethylamine is titrated with a 0.125 M solution of HCl. What is the pH of the solution after 10.0, 20.0, and 30.0 mL of acid have been added?

    asked on April 5, 2019
  16. Math

    A framed picture 20 inches wide and 36 inches high is shown in the diagram below. The picture will be hung on a wall where the distance from the floor is 10 feet. The center of the picture frame must be 2 3/4 feet from the floor. A) determine the distance

    asked on June 27, 2016
  17. Math

    There are 12 pieces of fruit in a bowl.7 are apples 2 are peaches.What is the probability that a randomly selected piece of fruit will not be an apple or a peach?Justify your answer.

    asked on August 19, 2015
  18. algebra

    The sum of two numbers is 43. The smaller number is 15 less than the larger number. What are the numbers

    asked on November 28, 2016
  19. US GOV

    Which of the following statements concerning the Twenty-fifth Amendment is incorrect? a. It allows the vice president to serve as acting president in the case of presidential disability. b. It allows the vice president alone to declare the president

    asked on November 18, 2011
  20. Physical Science

    Under what circumstances would you expect the shared electron pair to be equal distances on the average from each of the atoms participating in a covalent bond?

    asked on October 18, 2011
  21. help me for this stupid worksheet

    the question is.. why did the ghost decide to haunt city hall? urgh i don't fee like doing it so im hoping someone has the answer :] You might have gotten an answer if you'd told us the source of your question. To which story, poem, play are you referring?

    asked on January 31, 2007
  22. Physics

    Three resistors are connected in series across a battery. The value of each resistance and its maximum power rating are as follows: 7.1Ω and 20.9 W, 29.5Ω and 11.4 W, and 13.6Ω and 12.5 W. (a) What is the greatest voltage that the battery can have

    asked on March 3, 2017
  23. Calculus

    Find the dimensions of the right circular cone of maximum volume having a slant height of 5 ft. See the figure.

    asked on December 12, 2016
  24. Accounting

    Holly County needs a new county government building that would cost $24 million. The politicians feel that voters will not approve a municipal bond issue to fund the building since it would increase taxes. They opt to have a state bank issue $24 million of

    asked on January 31, 2013
  25. algebra

    The length of Sally's garden is 4 meters greater than 3 times the width. The perimeter of her garden is 72 meters. What are the dimensions of Sallly's garden?

    asked on January 26, 2010
  26. math

    Peter played his favorite video game for 10 hours last week. Today, Peter's parents restricted him to 5 additional hours each week for the next 8 weeks. Create the function, f(x), that models Peter's total video game time? Is it f(x)=5x + 10 or f(x)=5x + 8

    asked on March 3, 2017
  27. Social Studies

    1. How did World War 1 change warfare? A. By introducing the atomic bomb B. By showing the effectiveness of trench warfare C. By using tanks, airplanes, and machine guns D. By demonstrating the success of the blitzkrieg 2. Which of the following was a

    asked on February 29, 2016
  28. math

    The area of a square floor on a scale drawing is 100 square centimeters and the scale of the drawing is 1 centimeter:2ft. What is the area of the actual floor? What is the ratio of the area in the drawing to the actual area?

    asked on November 16, 2015
  29. 5th grade math

    In the multiplication problem at the right different letters stand for different digits, and ABC and DBC each represent a three digit number. What number does DBC represent? Two answer possible; give one

    asked on March 1, 2014
  30. Math

    Write a situation that can be represented by 6n+4.

    asked on April 25, 2013
  31. math

    Ben purchased 5 shirts for $12.95 each. How much sales tax will he pay if the tax rate is 6%?

    asked on July 22, 2012
  32. physics

    An 85 kg football player traveling 4.7 m/s is stopped in 1.0 s by a tackler. What is the original kinetic energy of the player? (I tried using 1/2 m v^2 but that doesn't seem to be right. How do I manipulate the formula?) What average power is required to

    asked on June 18, 2012
  33. Physics

    Jane, looking for Tarzan, is running at top speed (6.2 m/s) and grabs a vine hanging vertically from a tall tree in the jungle. How high can she swing upward?

    asked on October 24, 2011
  34. physics

    I place a single negative charge in a region where there is a constant electric field pointed toward the floor. The charge feels a force where?

    asked on August 22, 2011
  35. Chemistry

    Consider the reaction below : P4(s) + 5O2(g) ---> P4O10(s) How many grams of phosphorus react with 4.745 x 10^1 L of oxygen at STP to form tetraphosphorus decaoxide?

    asked on July 29, 2011
  36. Stats

    How many different simple random sample of size 8 can be obtained from a population whose size os 42?

    asked on March 28, 2011
  37. Biology

    Name three characteristics of mitochondria and chloroplasts that support the endosymbiotic hypothesis of eukaryotic evolution?

    asked on February 3, 2010
  38. I dont understand

    everytime I try to ask for hwlp my teacher goes and helps other st8dents when I am tryin to ask him for help on a problem. How do I solve the system of equation? x+y=1 2x-y=5

    asked on September 28, 2009
  39. Math

    from a window 35 meters high, the angle of depression to the top of a nearby street light is 55 degrees. The angle of depression to the base of the streetlight is 57.8. How tall is the streetlight?

    asked on March 2, 2009
  40. college board

    what does the SQ3R method stand for?Example: S- Q- R- R- R-

    asked on September 23, 2008
  41. Mathematics

    10 people share 4 pizzas equally. How much pizza does each person get?

    asked on May 28, 2020
  42. Math

    The seats at the auction were each 0.47 meters wide. If there were 12 seats in each row, how long was each row in meters? (Assume that there was no space between the seats.)

    asked on April 22, 2018
  43. Chrmisty

    Find the pH at each of the following points in the titration of 25 ml of 3.0M HF with 0.3 M NaOH. The Ka value is 6.6x10-4. After adding 25 ml of 0.3M NaOH

    asked on January 29, 2017
  44. English

    In which of the following sentences does the use of prepositional phrases make it harder for readers to find the main point of the sentence? A. The committee voted on several of the issues under consideration. B. In what way is a political group considered

    asked on October 21, 2016
  45. Psychology

    When researchers find similarities in development between very different cultures, what implications might such findings have for the nature-nurture issue?

    asked on September 27, 2016
  46. Psychology

    What study strategies can you think of that would make effective use of the levels-of-processing approach to memory?

    asked on September 21, 2016
  47. Chemistry DR BOB

    Under standard conditions of 1 atm and 298.15K, the half-cell reduction potential E,zero for the anode in a voltaic cell is 0.37V. The half-cell reduction potential E,zero for the cathode of the cell is 0.67V. The number of moles, n, of electrons

    asked on March 16, 2016
  48. Pre- Algebra

    You buy x pairs of shoes that each cost $24.95 the same number of socks that each cost $4.75 and a pair of pants that costs $29.99 write an expression in simplest form that represents the total amount of money spent. Would you add them all together?

    asked on January 13, 2016
  49. math

    what is the volume of a cylinder with a radius of inches and a height of 6 inches ?

    asked on March 26, 2015
  50. Psychology

    Martina heard the noise, but could not understand what was being said. Perhaps it was simply the humming of the machines that she heard? She was uncertain whether she should move toward or away from the sound. Martina is having difficulty with? A.

    asked on March 7, 2015
  51. chemistry

    A co-op student designed an experiment to collect hydrogen gas by reacting iron with a hydrochloric acid (HCl) solution. The student’s co-op supervisor suggested that aluminum can also be included to generate hydrogen gas: Fe + 2 HCl → 2 FeCl2 + H2 2

    asked on October 17, 2014
  52. chemistry

    Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of mercury / mL, what is

    asked on September 23, 2014
  53. chemistry

    How to calculate the molarity of commercial bleach

    asked on April 1, 2013
  54. Chemistry

    Using Werner Hesienbergs uncertainty principle delta x >h/ (4pie*m*delta v) when mass of electron is 9.11x10^-31kg what is the uncertainty in the position of an electron moving at 9x10^6 m/s with an uncertainty of delta v= 0.01x10^6m/s

    asked on January 14, 2013
  55. Physics

    A 1.5 N force acts on a .20 kg cart so as to accelerate it along a frictionless track. If it is accelerated from rest, how fast is it going after .3m? The answer given is 2.12 m/s but I am not sure how to get to that.

    asked on November 17, 2011
  56. grade 9 math

    Does this answer seem correct. 2k+3=4k-5 2k-4k+3-3=-5-3 2k-4k=-5-3 -2k/-2k = -8/2 k=4

    asked on April 12, 2011
  57. Physics

    A car of mass = 1200 traveling at 60.0 enters a banked turn covered with ice. The road is banked at an angle , and there is no friction between the road and the car's tires.What is the radius of the turn if = 20.0 (assuming the car continues in uniform

    asked on April 6, 2011
  58. algebra

    A 30ft. cable is cut into 2 pieces. One piece is twice as long as the other piece. Find th length of each piece of the cable.

    asked on January 24, 2010
  59. history

    What are some websites that will help me research African Americans in the colonial times?

    asked on September 23, 2008
  60. square roots

    How do I figure out the square root of 90 over 2

    asked on February 11, 2008
  61. Physics (12)

    A car and train move together along parallel paths at 25 m/s [W]. The car then undergoes a uniform acceleration of 2.5m/s^2 [E] because of a red light and comes to rest. It remains at rest for 45s, then accelerates back to a velocity of 25m/s [W] at a rate

    asked on September 11, 2007
  62. chemistry

    A compound has the following composition. C 54.5%, H 9.10% and 0 36.4% its molecular weight is 88.10. Determine its empirical formula and molecular formula. Take 100 g sample. That gives you 54.5 g C, 9.10 g H and 36.4 g O. Now convert those grams to mols.

    asked on June 24, 2007
  63. math

    The sum of a number times 3 and 19 is at most −26.

    asked on November 8, 2019
  64. Math

    A cookie recipe calls for 5/8 cups of flour and 5/6 cup of sugar. What is the least common denominator of the fractions?

    asked on April 25, 2019
  65. Accounting

    On June 3, a company borrows $200,000 cash by giving its bank a 90-day, interest-bearing note. On the statement of cash flows, where should this be reported?

    asked on April 23, 2019
  66. history

    12. What was the Cold War? What exactly made it "Cold"? Why was it never "hot"? (Answer every part of the question) (5 points) *

    asked on April 4, 2019
  67. Algebra

    Hello! Suppose that the price per unit in dollars of a cell phone production is modeled by p = $55 − 0.0125x, where x is in thousands of phones produced, and the revenue represented by thousands of dollars is R = x · p. Find the production level that

    asked on October 12, 2018
  68. Math

    The price of gasoline increased 25% from July to August. If c = cost of gasoline in July, write two expressions that represent the price of gas in August. If you know the cost of gas in July, which expression do you think would be easier to use to

    asked on June 22, 2018
  69. algebra

    Tickets to a sporting event cost $6 for children and $8 for adults. The total revenue from the tickets sold was $2340. There were 320 total tickets sold. How many children’s tickets were sold?

    asked on October 12, 2017
  70. Algebra

    Sarah's mother has a miniature village modeled after her home town. The model is 10 feet long and 7 feet wide. The actual village is 7 miles long. What is the village's actual width? I just want to know if I should convert the feet to miles at one point.

    asked on August 25, 2017
  71. Math

    Ms. Alison drew a box-and-whisker plot to represent her students’ scores on a midterm test. Josh received 53 on the test. Describe how his score compares with those of his classmates. a. About 25% scored higher; about 75% scored lower. b. About 50%

    asked on August 25, 2017

    What is the slope of the line that passes through (2, 5) and (−1, 5)? A. Undefined B. 0 I think its 0

    asked on March 3, 2017
  73. Physics

    Two wires are identical, except that one is aluminum and one is copper. The aluminum wire has a resistance of 0.527Ω. What is the resistance of the copper wire? Take the resistivity of copper to be 1.72 x 10-8 Ω·m, and that of aluminum to be 2.82 x 10-8

    asked on February 26, 2017
  74. Physics

    a 4500 kg truck traveling at 17.5 m/s collides with a motionless 1350 kg car. they become locked together. if there is no friction, what is their velocity?

    asked on January 17, 2017
  75. English

    Which of the following is a true statement about an MLA Works Cited page? A. The Works Cited page requires no special formatting. B. The Works Cited page should immediately follow the conclusion and be on the same page. C. The Works Cited page should

    asked on November 30, 2016
  76. English

    Read the following opening sentence of an introductory paragraph and answer the question that follows. Should you ever find yourself in a situation in which you suspect that someone is listening in your private conversation, you might not be as paranoid as

    asked on October 20, 2016
  77. social studies

    10. Which of the following best describes the purpose of the Non-Intercourse Act? (1 point) to forbid the U.S. from trading with Britain and France so the countries would recognize U.S. trading rights to allow U.S. merchants to resume trade with all

    asked on October 20, 2016
  78. sails math

    A chemist has a solution that is 70% acid and another that is 45% acid. How many liters of each should he mix to obtain 300 liters of a solution that is 65% acid?

    asked on April 29, 2016
  79. US History

    Hello, I am filling out a study guide for a test coming up in two days, and I can not seem to find this answer in my text book. Could someone please help? Which of the following is true of the Korean conflict? A. It ended with an enormous American victory.

    asked on April 27, 2016
  80. Physics

    P= 231fraction numerator f t asterisk times l b over denominator s end fraction t= 14.3s W= ?

    asked on February 22, 2016
  81. science

    which of the following is a constant, or control variable, in this experiment?

    asked on January 14, 2016
  82. physics

    A 65.5 kg high jumper leaves the ground with a vertical velocity of 8.1 m/s. How high can he jump? The acceleration of gravity is 9.8 m/s2 .

    asked on December 1, 2015
  83. Math

    A food co.packs 24 cans of tuna into a box. The co.has 768 cans to box. If they sell a full box for $12,how much money will the food co.make on these boxes?

    asked on October 1, 2015
  84. precalc

    A projectile is launched from a platform 20 feet high with an initial velocity of 48 feet per second, The height h of the projectile at t seconds after launch is given by h = –16t^2 + 48t + 20 feet. (a) How many seconds after launch does the projectile

    asked on July 12, 2015
  85. Algebra

    A ball is thrown from the top of a building. It's height (y) in feet at any given time (x) in seconds is y=-16x^2+240. What is the maximum height of the ball?

    asked on June 22, 2015
  86. math

    Elisa surveyed people in her neighborhood about whether they would like to have a swimming pool in their community park. Of those who responded, 65% were in favor of having a swimming pool. Based on these results, which statement could be true? A. Elisa

    asked on April 9, 2015
  87. Math

    A box of Cereal X contains 36 ounces and costs $ 4.99. A box of Cereal Z contains 30 ounces and costs $ 4.50. Which cereal is the better buy ?

    asked on March 26, 2015
  88. Physics

    A motorcycle has a mass of 250kg. It goes around a 13.7 m radius turn at 96.5 km/hr. What is the centripetal force? a. 2.95x10^3 N b. 4.31x10^4N c. 1.31x10^4 N d. 719N

    asked on January 20, 2015
  89. Chemistry

    How many moles of carbon are needed to react with 5.6 moles of hematite (Fe2O3)?

    asked on January 8, 2015
  90. Chemistry

    If 3.79x1024 formula units (molecules) of hematite react with excess carbon, what mass of iron will be produced?

    asked on January 7, 2015
  91. chemistry

    Propane (C3H8) which is used as fuel in BBQ tanks often contains some butane(C4H10). A sample of a fuel mixture known to contain both propane and butane occupies a certain volume at a total pressure of 30 mmHg. The sample is then burned completely to

    asked on October 17, 2014
  92. Pre-Calc

    1.) Describe how the graphs of f(x) = |2x| and g(x) = -|2x| are related. a.) All of these. b.) The graph of g(x) is a reflection of the graph of f(x) over the y-axis. c.) Non of these. d.) The graph of g(x) is a reflection of the graph of f(x) over the x

    asked on September 26, 2014
  93. Rbowh

    On the second problem r+11=19 r+11-_=19-_ r=_ Would it be R+11=30=19-11 R=8

    asked on April 9, 2013
  94. Health

    What is the Affordable Care Act? A. A program that allows people who are at lower risk for chronic diseases to gain free memberships to gyms and fitness facilities. B. A program that covers diet counseling for people who are at lower risk for chronic

    asked on March 2, 2013
  95. Calculus

    Find the equation of the tangent line to the graph of 4y^2− xy − 3 = 0, at the point P=(1,1)

    asked on December 9, 2012
  96. chemistry

    How much heat is needed to change 4.5g of water at 10degrees celcius into steam at 150 degrees celcius?

    asked on August 21, 2012
  97. chem

    calculate the solubility of barium sulfate (Ksp=1.1x10^-10) in a) water b) a 0.10 M barium chloride solution help is GREATLY appreciated

    asked on March 18, 2012
  98. physics

    Assume the driver has a mass of 70.6 kg . What horizontal force does the seat exert on the driver? Answer in units of N

    asked on November 13, 2011
  99. algebra

    use this inequality -4t - 8 less than or equal to 12 to fill in the missing number, t+4 greater than or equal to ___?

    asked on October 6, 2011
  100. MATH QUIZ

    Round each number to the underlined place value. 1.) 15.6571 -->5 is underlined 2.) 0.8914 -->1 is underlined 3.) 7,022.56 -->3 is underlined 4.) 345.678 -->6 is underlined Estimate. 5.) 3.7 · 8.06 about 32 about 27 about 12 about 24 6.) 17.25 + 6.66

    asked on October 5, 2011


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