Popular questions and responses by amber
  1. Litature

    The novel To Kill a Mockingbird features a main character named Scout. Scout is also the voice that tells the story. What point of view is used in the novel? A. first person B. third-person limited

    asked on August 9, 2016
  2. chemistry

    Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: 2 NO(g) + O2(g) → 2 NO2(g), ΔH°rxn = ? Given: N2(g) + O2(g) → 2 NO(g), ΔH°rxn = +183 kJ 1/2 N2(g) + O2(g) → NO2(g), ΔH°rxn = +33 kJ

    asked on June 14, 2011
  3. Pre-Cal

    Find sin 2x, cos 2x, and tan 2x from the given information. [1]. sin x = 8/17, x in Quadrant I 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x =________. [2]. sin x = -5/13, x in Quadrant III 1). sin 2x =________. 2). cos 2x =________. 3). tan 2x

    asked on July 7, 2016
  4. probability

    in a 2-card hand, what is the probability of holding only face cards?

    asked on March 25, 2013
  5. physics

    3) A 5.0 kg book is sitting on a table. Which describes the force acting on the book a. there are no forces acting on the book b. the force of the table upward is greater than the force of gravity downward c. the net force on the book is zero d. kinetic

    asked on February 23, 2010
  6. Pre-Cal

    An equation is given. (Enter your answers as a comma-separated list. Round terms to three decimal places where appropriate. If there is no solution, enter NO SOLUTION.) 2 cos 2θ − 1 = 0 a). Find all solutions of the equations answer--> θ= (π+6nπ)/6 ,

    asked on July 11, 2016
  7. Social studies

    Which of the following was a cause of the Great Depression? (Choose all that apply.) A. the stock market crash of 1929 B. prohibition C. failed crops and drought D. a lack of demand for goods The first 3? Is that correct?

    asked on March 2, 2016
  8. Math Essentials

    How many ways can an IRS auditor select 4 of 9 tax returns for an audit?

    asked on November 27, 2012
  9. chemistry

    According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy? SiO2(s) + 4 HF(g) → SiF4(g) + 2 H2O(l), ΔH°rxn = -184 kJ

    asked on June 14, 2011
  10. Algebra

    Find the accumulated value of an investment of $5000 at 5% compounded monthly for 8 years.

    asked on February 22, 2011
  11. Pre-Calc

    sin(2θ)=1/2 Find all solutions in the interval [0, 2π). (Enter your answers as a comma-separated list.) k = any integer What I have so far: pi/12 + kpi, 5pi/12 + kpi However, I do not know how to solve for the interval. Please help, thank you!

    asked on March 7, 2019
  12. Science

    Which of the following are examples of science? Mark all that apply. A. a journalist writes a story about a man who became rich by buying stock on Tuesdays B.a woman chooses an item to purchase based on its packaging C. a farmer consults a weather almanac

    asked on August 8, 2016
  13. Pre-Cal

    Use an Addition or Subtraction Formula to write the expression as a trigonometric function of one number. (tan(74°)-tan(14°))/(1+tan(74°)tan(14°)) =__________ Find it's exact value (not decimal form) =__________ Note: A similar question(but with

    asked on July 7, 2016
  14. Math

    Simplify 14-3x4/6 A. 14 B. 12*** C. 6 D. 3 Is it B?

    asked on August 11, 2015
  15. Algebra

    Translate this phrase into an algebraic expression. 7 increased by twice Malik's savings. Use the variable m to represent Malik's savings.

    asked on October 27, 2014
  16. Health

    Characteristics caused by hormones but that do not include development of reproductive organs are called........ A. primary sex Characteristics B. secondary sex characteristics C. physical Characteristics D. body Characteristics The many physical changes

    asked on August 25, 2014
  17. Algebra

    find the unit rate for number of parts manufactured per hour if 1630 parts are made in 6 hours. round to the nearest integer. SHOW ALL WORK.

    asked on November 28, 2010
  18. physics

    You want to swim straight across a river that is 76m wide. You find that you can do this if you swim 28 degrees upstream at a constant rate of 1.7m/s relative to water. At what rate does the river flow? The angle is measure from the river bank (directly

    asked on March 7, 2010
  19. check my answers please

    "President Lincoln’s Declaration of Emancipation, January 1, 1863" by Frances E. W. Harper 1 It shall flash through coming ages, 2 It shall light the distant years; 3 And eyes now dim with sorrow 4 Shall be brighter through their tears. 5 It shall flush

    asked on April 7, 2015
  20. Art

    Which inference about Near Eastern cultures is best supported by this image? (Its a image of Cappadocian Tablet with Cuneiform Inscription Assyrian) A. All citizens of the ancient Near East were excellent writers. B. This tablet describes the only god

    asked on January 14, 2016
  21. algebra

    In Chemistry class, Andrew has earned scores of 64, 69, and 73 on three tests. He must maintain an average of 70 to pass the course. What score must Andrew earn on the final exam to pass the course?

    asked on April 5, 2012
  22. Algebra

    A brick staircase has a total of 16 steps The bottom step requires 112 bricks. Each successive step requires 4 fewer bricks than the prior one. How many bricks are required to build the staircase?

    asked on March 7, 2011
  23. algebra

    A 10 ft. long stem of bamboo is broken in such a way that its tip touches the ground 3 ft. from the base of the stem, as shown in the figure. What is the height of the break? please show me how to do it I'm reviewing for our final exam... thanks in solving

    asked on October 11, 2015
  24. Calc

    A rectangular page is to contain 30 sqaure inches of print. The margins on each side are 1 inch. Find the dimensions of the page sucha that the least amount of paper is used. A farmer plans to fence a rectangular pasture adjacent to a river. The pasture

    asked on July 7, 2017
  25. math

    if Y varies jointly as X and the square of Z, and if Y=24 when X=2 and Z=6, find Y when X=10 and Z=9

    asked on September 5, 2012
  26. finite math

    Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model-A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model-B hibachi requires 4 lb of cast iron and 3 min of labor. The

    asked on May 7, 2011
  27. Language Arts

    3. Which statement best expresses a central theme of ''The Story Teller''? A. People with no children to care for are usually better at handling children. B. It is important to instruct children about right and wrong at all times. C. The best way for

    asked on September 15, 2014
  28. Liberal Arts 1

    In a class of 50 students, 26 are Democrats, 13 are business majors, and 3 of the business majors are Democrats. If one student is randomly selected from the class, find the probability of choosing a Democrat or a business major.

    asked on November 15, 2014
  29. Physics. PLEASE HELP!!

    Two ice skaters hold hands and rotate, making one revolution in 7.6 s. Their masses are 15 kg and 50 kg, and they are separated by 4.6 m. Find the angular momentum of the system about their center of mass. Answer in units of J · s Find the total kinetic

    asked on April 25, 2012
  30. science

    Which direction will the box move in the diagram below? (Its a square in the middle and it has a long arrow pointing to it on the left side which is 5 N and then on the right side theirs a short arrow pointing to it which is 3 N) A. It will move to the

    asked on January 14, 2016
  31. Physical Science

    1) Carbon dioxide is obtain from the air and changed into carbohydrates oxygen during the process of fossilization. respiration. digestion. photosynthesis. 2) Which sequence of processes must occur for an atom of carbon to go from car to tree? respiration,

    asked on January 22, 2014
  32. Statistics

    It is reported that 72% of working women use computers at work. Choose 5 working women at random. Find a. The probability that at least 1 doesn't use a computer at work b. The probability that all 5 use a computer in their jobs

    asked on November 11, 2014
  33. algebra

    a cyclist rides her bike at the speed of 18 kilometers per hour what is this rate in meters per second how many meters will the cyclist travel in 2 seconds

    asked on October 17, 2014
  34. Chemistry

    This compound is mescaline, a hallucinogen. Which of the following statements is true? Mescaline is an amine. Mescaline contains an alcohol group. Mescaline is a carboxylic acid. Mescaline is an amine and contains an alcohol group.

    asked on March 18, 2014
  35. Geometry

    Angle ABC and ange DBE are vertical angles,the measure of angle ABC =3x+20, and the measure or angle DBE =4x-10. Write and solve an equation to find the measure of angle ABC and the measure of angle DBEin

    asked on September 2, 2012
  36. Physics

    1. A worker pushes horizontally on a 2000 N refrigerator on a kitchen floor with a force of 25 N. Which statement is the most accurate about the situation? A. If the refrigerator moves forward, this person feels it pushing back with less than 25 N. B. The

    asked on October 5, 2018
  37. Physics

    If a person weighs 818 N on earth and 5320 N on the surface of a nearby planet, what is the acceleration due to gravity on that planet? A. 55.4 m/s^2 B. 46.5 m/s^2 C. 63.7 m/s^2 D. 73.3 m/s^2 Help!!

    asked on October 4, 2018
  38. Algebra

    61 times a number minus 83 is equal to -59 less than a number write equation

    asked on February 4, 2017
  39. Math

    1. What is the probability of rolling a number less than or equal to 6 when rolling a six-sided number cube? a. 0.17 b. 5% c. 5/6

    asked on February 4, 2016
  40. Algebra

    A mother wants to invest 8,000 dollars into her child's college fund. She invests a portion of the money into a CD account which earns 4% interest, and the remainder into a savings bond which earns 7% interest. If the total interest earned after one year

    asked on June 1, 2014
  41. math

    quadrilateral RSTU has vertices R(-6,-3), S(3,3), and T(4,-1). what are the coordinates of vertex U if RSTU is a parallelogram?

    asked on December 25, 2013
  42. physics

    The period of the musical node E0 is 4.85 × 10-2 seconds. What is the frequency of this note?

    asked on April 19, 2013
  43. Geometry

    To approach a runway, a plane must began a 7 degree descent starting from the height of 2 miles above the ground. To the nearest mile, how many miles from the runway is the airplane at the start of this approach?

    asked on October 16, 2012
  44. finite math

    The price of a new car is $16,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 6%/year compounded monthly. (Round your answers to the nearest cent.) What monthly

    asked on May 7, 2011
  45. Physics

    A flat slab of styrofoam, with a density of 32 kg/m^3, floats on a lake. What is the minimum volume the slab must have so that a 42 kg boy can sit on the slab without it sinking?

    asked on November 15, 2010
  46. calculus - identities

    prove this identity: sec(y) - cos(y)= tan(y)sin(y) THANK YOU!!

    asked on October 16, 2009
  47. language arts

    1. Part A What paragraphs provide dialogue that introduces the play's main conflict. a. paragraphs 3-4 b. paragraphs 6-7 c. paragraphs 12-13 d. paragraphs 18-19

    asked on May 11, 2017
  48. Science

    Which of the following is true? Mark all that apply. A. a hypothesis can be proved incorrect through experiment B. conclusions cannot disprove a hypothesis C. conclusions are made based on the analysis of data D. opinion is used to analyze data Is it A and

    asked on August 8, 2016
  49. Pre-Cal

    Find sin x/2, cos x/2, and tan x/2 from the given information. [1]. sin x = 5/13, 0° < x < 90° 1). sin x/2 =________. 2). cos x/2 =________. 3). tan x/2 =________. [Note: Plz help with these 3]

    asked on July 7, 2016
  50. Math

    Use the graph below to answer the following question. I'll post the link to the graph below. Find the slope. A. 2 B. -1/2 C. -2 D. 1/2 Honestly I'm horrible at Math so I can't really pick a answer can someone please help me? Please explain to me how to

    asked on April 28, 2015
  51. Math

    Mrs. Daniel pays $324 for a handbag and 3 pairs of shoes. The handbag cost half as much as the 3 pairs of shoes combined. Find the cost of the hand bag.

    asked on October 14, 2014
  52. Algebra

    A building is 2ft from a 9ft fence that surrounds the property. A worker wants to wash a window in the building 13ft from the ground. he plans to place a ladder over the fence so it rests against the building. he decides he should place the ladder 8ft from

    asked on September 27, 2014
  53. chemistry

    A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ΔH°comb for aniline.

    asked on June 14, 2011
  54. chemistry

    how many moles of ions are released when 1.6 mol of ammonium phosphate is dissolved in water?

    asked on October 10, 2010
  55. Physics

    1. In outer space, where there is no gravity or air, an astronaut pushes with an equal force of 20 N on a 3 N moon rock and on a 9 N moon rock. Which statement is the most accurate about this situation? A. Since both rocks are weightless, they will have

    asked on October 5, 2018
  56. English

    Identify the correct sentence. A. Neither Bill nor Linda ever wish to see that snarling cat again. B. Bill and Linda hope never to see that snarling cat again. C. Bill and Linda wishes they would never see that snarling cat again. D. Bill and Linda hopes

    asked on January 28, 2017
  57. Math

    Match the inequality to its graph. Graph A. less than or equal to -1 Graph B. less than 3 Graph C. less than 1 Graph D. less than or equal to -3 7. 4y + 3 *less than or equal to* y+6 8. -2y > 2 9. y over 3 < -1 10. 3y *less than or equal to* 2y +3 Not

    asked on October 2, 2016
  58. Chemistry

    You are given a solution of HCOOH (formic acid) with an approximate concentration of 0.20 M and you will titrate with a 0.1105 M NaOH. If you add 20.00 mL of HCCOOH to the beaker before titrating, approximately what volume of NaOH will be required to reach

    asked on November 11, 2015
  59. math

    Identify the solutions of the systems of equations, if any. -4x-4y=8 4y=-4x-8 No solution (0,-2) (-2,0) Infinitely many solutions

    asked on September 2, 2014
  60. I would like to understand my calc homework:/

    Consider the differential equation given by dy/dx=(xy)/(2) A) sketch a slope field (I already did this) B) let f be the function that satisfies the given fifferential equation for the tangent line to the curve y=f(x) through the point (1,1). Then use your

    asked on March 27, 2013

    An investment of $63,000 was made by a business club. The investment was split into three parts and lasted one year. The first part of the investment earned 8% interest, the second 6% and the third 9%. Total interest from the investments was $4950. The

    asked on March 25, 2012
  62. Chem

    calculate the mass in grams of carbon needed to produce 160 grams of CO2 burning. C + O2 -> CO2

    asked on December 15, 2011
  63. Physics

    Light of wavelength 550 nm in air is found to travel at 1.96 x 10^8 m/s in a certain liquid. Determine the index of refraction of the liquid.

    asked on June 3, 2010
  64. Physics

    A 0.50-kg mass at the end of a spring vibrates 3.0 times per second with an amplitude of 0.15 m. Determine (a) the velocity when it passes the equilibrium point, (b) the velocity when it is 0.10 m from equilibrium, (c) the total energy of the system, and

    asked on May 28, 2010
  65. Mathematics

    Find the surface area of a conical grain storage tank that has a height of 30 meters and a of 16 meters. Round the answer to the nearest square meter. Options: 2365 m squared 1762 m squared 981 m squared 780 m squared

    asked on May 8, 2020
  66. Chemistry

    Which of the following represents lattice energy? None of the reactions Na+(s) + I-(s) = NaI (s) Mg2+(g) + 2F-(g) = MgF2(s) LiBr(s) = Li+(s) + Br-(s) NaCl(s) = Na+ (g) + Cl-(g)

    asked on October 26, 2017
  67. history

    During the rapid urbanization of the late-19th century, _______________________ maximized the use of urban space by housing large numbers of people in cramped, and often unsafe, conditions. tenements projects row houses skyscrapers

    asked on March 21, 2017
  68. Microbes and Society

    Which of the following is not a good example of a scientific hypothesis (i.e., the hypothesis you would set up to test against the null hypothesis)? Answers: a. Smaller class size is related to better academic performance. b. There is no relationship

    asked on January 31, 2017
  69. Biology

    1. Which of the following is not a characteristic of life? A. maintains homeostasis *** B. composed of cells C. composed of atoms D. carries out metabolism 2. Which of the following must be true to consider something to be alive? A. It must be able to

    asked on August 10, 2016
  70. Math

    The perimeter of a rectangle is 154 feet. The length of the rectangle is 55 feet. What is the width of the rectangle?

    asked on January 14, 2016
  71. math

    Which special version of the Pythagorean Theorem can you use to find the length of any square's diagonal, d, using only the length of its side, s? is this a^2+b^2=c^2?

    asked on November 12, 2015
  72. Probability

    Ten horses run in a race. How many different arrangements of placing 1st, 2nd , 3rd? I tried by doing 10!over 7! But I don't know if that is correct , also how can you tell the finishing number as well.

    asked on September 30, 2015
  73. Health

    2. What is the primary cause for emotional and physical changes during adolescence? A. changes in growth patterns B. peer pressure C. Hormonal changes*** D. differences in family structures I think C but I'm not sure?

    asked on August 17, 2015
  74. Physics.

    From greatest to least, rank the accelerations of the boxes. C. B. A. D.

    asked on February 21, 2014
  75. Trigonometry

    A person on a ship sailing due south at the rate of 15 miles an hour observes a lighthouse due west at 3p.m. At 5p.m. the lighthouse is 52degrees west of north. How far from the lighthouse was the ship at a)3p.m.? b)5p.m.? c)4p.m.? Please Show The Solution

    asked on June 23, 2012
  76. Chemistry

    Chemical analysis show that hemoglobin contains 0.34 percent Fe by mass. What is the minimum possible molar mass of hemoglobin? The actual molar mass of hemoglobin is four times this minimum value. What conclusion can you draw from these data?

    asked on November 2, 2011
  77. math

    A ball is thrown vertically upward from the ground with an initial velocity of 110ft/sec. Use h=−16t2+v0t+h0 I have no idea what i am doing

    asked on March 24, 2019
  78. math

    The length of a rectangle is 5 times the width. The area is 720 square centimeters. Find the length and width of the rectangle.

    asked on March 24, 2019
  79. Microbes and Society

    Which of the following is the correct sequence of steps in the scientific method? a. observation - prediction - hypothesis - observation - hypothesis b. hypothesis - observation - prediction - hypothesis - observation wrong c. observation - hypothesis -

    asked on January 31, 2017
  80. Math

    A car traveling at 46 mi/h slows to a speed of 23 mi/h in 5 seconds. It maintains that speed for 5 seconds and then slows to stop after 5 more seconds. Which graph shows the car's speed overtime

    asked on February 18, 2016
  81. Physics

    A point charge of 4 μC is placed at the origin. There is an external uniform field E = 400 i N/C. What is the net force on a 5 μC charge placed at (5 m, 3 m) ??? i + ??? j N

    asked on September 6, 2015
  82. Chemistry

    Determine the pH of a buffer made from 250 ml of 0.50M HF and 150 ml of 0.75 M NaF.

    asked on May 25, 2015
  83. The Giver

    Read the paragraph from the Novel The Giver. With the chant, Jonas Knew, the community was accepting him and his new role, giving him life, the way they had given it to the newchild Caleb. His heart swelled with gratitude and pride. But at the same time,

    asked on May 22, 2015
  84. Finance

    Calculate, to the nearest cent, the future value FV of an investment of $10,000 at the stated interest rate after the stated amount of time. HINT [See Example 1.] 5% per year, compounded daily (assume 365 days/year), after 11 years

    asked on February 24, 2015
  85. Science

    A science teacher was curious to see whether offering money for good grades would increase student peformance on a test. The teacher offered half of the students in the class $5.00 if they got an A on their next test. The other half of the class was not

    asked on August 19, 2014
  86. chemistry

    An oxalic acid solution contains the following species in varying concentrations: H2C2O4, HC2O4-, C2O4^2-, and H+. Which of the above four species can act only as acids, which can act only as bases, and which can act as both acids and bases?

    asked on September 29, 2011
  87. Physics

    An airplane pilot tries to fly directly east with a velocity of 800.0 km/h. If wind comes from the southwest at 80.0 km/h, what is the relative velocity of the airplane to the surface of Earth?

    asked on October 27, 2009
  88. algebra

    Henry paid $.80 for each bag of peanuts. He sold all but 20 of them for $1.50 and made a profit of $54. How many bags did he buy? (HINT: Profit = selling price-buying price.)

    asked on October 18, 2009
  89. physics

    The drawing shows three point charges fixed in place. The charge at the coordinate origin has a value of q1 = +8.70 µC; the other two charges have identical magnitudes, but opposite signs: q2 = -4.50 µC and q3 = +4.50 µC. Determine the net force

    asked on September 2, 2009
  90. Animals

    How do gazelles sleep and when? And what do they do during the night?

    asked on January 21, 2009
  91. finance

    It’s been two months since you took a position as an assistant financial analyst at Caledonia Products. Although your boss has been pleased with your work, he is still a bit hesitant about unleashing you without supervision. Your next assignment involves

    asked on May 19, 2008
  92. Bus. Math

    Misu Sheet, owner of the Bedspread Shop, knows his customers will pay no more than $140 for a comforter. Misu wants a 25% markup on cost instead of on selling price. What is Misu’s cost? (Round your answer to the nearest cent.)

    asked on March 26, 2017
  93. psychology

    I need a topic that is minimum risk and ethical that the goal is to examine the effects of the independent variable on the dependent variable

    asked on March 23, 2017
  94. english

    When a paragraph tells a story, which method of organization is being used? A. specific-to-general order B. spatial order C. importance order D. chronological order my answer is B

    asked on February 7, 2017
  95. Science

    Which of the following is not a characteristic of life? A. maintains homeostasis B. composed of cells C. composed of atoms D. carries out metabolism C? Is that correct

    asked on August 9, 2016

    Which of the following lines of poetry contains a simile?

    asked on January 26, 2016
  97. Chemistry

    When Zn(OH)2(s) was added to 1.00 L of a basic solution, 1.24×10−2 mol of the solid dissolved. What is the concentration of OH− in the final solution?

    asked on October 29, 2015
  98. Science

    What is the difference between a scientific theory and a scientific law? A. A scientific theory describes a pattern of observations, while a scientific law is an educated guess based on observation. B. A scientific theory is based on a few experiments,

    asked on August 13, 2015
  99. algebra2/ trig

    The figure at the right shows three circular pipes all with 12inch diameters the have been strapped together by a metal band.What is the lenght of the band? I don't even know where to start , please help?

    asked on October 1, 2014
  100. Language Arts

    1. In ''The Story -Teller,'' the bachelor says that Bertha was ''horribly good.'' What do you think this term means? A. She is so good that she deserves three medals. B. She is horrible-looking but is very well behaved. C. Being good is a horrible quality.

    asked on September 15, 2014


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