Popular questions and responses by sophie
  1. Health

    A _________ is a substance the body needs in order to grow and function properly. A. metabolism B. diet C. nutrient D. calorie I think it is calorie

    asked on September 24, 2018
  2. social studies

    What was unique about priests in Sumerian society? A. They were not allowed to farm. B. They were females chosen from an early age. C. They were the only ones who could communicate with the gods. D. They were responsible for the Sumerian advancements in

    asked on October 8, 2018
  3. Spanish

    Where did the dominoes originate before spreading throughout the Spanish-speaking world? A. Miami B. México and Cuba C. The United States D. Spain I think the answer is D

    asked on September 25, 2018
  4. Math

    The supply function for a product is 2p-q-10=0, while the the demand function for the same product is (p+10)(q+30) = 7200. Find the market equilibrium point. .. I think q=656.6667 and p= 333.33335 I think D must = S... but I don't know how do do that.

    asked on January 9, 2017
  5. Math

    The graph below models the value of a $20,000 car t years after it was purchased. Which statement best describes why the value of the car is a function of the number of years since it was purchased? A: Each car value, y, is associated with exactly one

    asked on September 11, 2019
  6. chemistry

    Where possible, classify these systems as reactant-favored or product-favored at 298 K. If the direction cannot be determined from the information given, classify the reaction as "Insufficient information". a)2A(g) + 3B(g) -->4C(g) delta H = -95kJ b)2A(g)

    asked on April 20, 2014
  7. Chemistry

    Write the formula for a complex formed between Ni 2+ and NH3, with a coordination number of 5. Write the formula for a complex formed between Ni 2+ and CN–, with a coordination number of 4. I am having trouble with these problem because I don't really

    asked on June 1, 2014
  8. Math

    Find the ordered pair that represents the vector from A(-4.3,-0.9) to B(-2.8,0.2)? Then find the magnitude of AB. A. (1.5,1.1); 3.46 B. (-7.1, -0.7); 7.13 C. (1.5, 1.1); 1.86 D.(-7.1, -1.1); 7.18 I got C, is this right?

    asked on June 2, 2009
  9. Math

    Four subtracted from 3 times a number is 29. Find the number

    asked on January 29, 2017
  10. Math Data Management

    In how many ways can the 12 members of a volleyball team line up, if the captain and assistsant captain must remain together? Thank you in advance.

    asked on September 21, 2009
  11. English

    Read the passage below and answer the question that follows: “I like pond skating best by moonlight. The hollow among the hills will always have a bit of mist about it, let the sky be clear as it may. The moonlight, which seems so lucid and brilliant

    asked on September 11, 2020
  12. Math

    Which of these tables represents a linear function? A: 3,3 4,4 5,6 6,7 B: 3,6*** 4,5 5,4 6,3 C: 3,7 4,6 5,5 6,5 D: 3,2 4,4 5,5 6,6

    asked on September 11, 2019
  13. Social Studies

    Why did settlers in North Carolina begin to move inland over time?

    asked on September 5, 2019
  14. math help?!

    If x = 6sinθ, use trigonometric substitution to write square root 36-x^2 as a trigonometric function of θ, where where 0

    asked on July 11, 2016
  15. math

    What is the distance between the parallel planes: ax+by+cz=d1 and ax+by+cz=d2?

    asked on May 22, 2011
  16. Social Studies

    The end of the trans-Atlantic slave trade resulted in A. a decrease in money going to African kingdoms.*** B. payment from the Americas to Africa. C. Africa owing money to American slaveholders. D. an increase of European goods in Africa.

    asked on September 19, 2019
  17. Career. 8th PLZ GIVE ANSWERRS

    1. You need a college degree to enter the military True False 2. Which of the following is an elected office? lawyer police officer paramedic state representative 3. All people in government or public administration are elected. True Flase 4. Inspectors

    asked on September 19, 2018
  18. Chemistry

    The density of carbon in the form of diamonds is 3.51 g/cm^3. If you have a 40- carat spherical diamond, what is the diameter of the diamond in millimeters? (1 carat=0.200 g)

    asked on March 7, 2013
  19. Chemistry

    The ph of a solution is 9.55 at 25degree celcius. What is the hydroxide-ion in the solution?

    asked on April 2, 2015
  20. Social Studies

    Which statements best describe the effects of the War of Regulation? Check all that apply. Regulators succeeded in forcing the government to hold elections. Many Regulators fled to Kentucky and Tennessee.**** The war discouraged other groups from rebelling

    asked on October 3, 2019
  21. ap chemistry

    Which of the following rate laws is possible for the following two-step reaction? 1) NO(g) + NO(g) N2O2(g); FAST 2) N2O2(g) + O2(g) 2NO2(g); SLOW Net: 2NO(g) + O2(g) 2NO2(g); A. k[N2O2][NO] B. k[NO]2 C. k[N2O2][O2] D. k[NO][O2] help!!!!! i don't know how

    asked on March 5, 2018
  22. Math

    The Smith family drinks 1 4/5 liters of apple juice each day. The apple juice is packed in 2-liter bottles. How many bottles does Mrs. Smith need to buy every week?

    asked on April 10, 2015
  23. math

    the area of a rectangle is 60cm.the length is 11cm more than the width. find the width.

    asked on November 1, 2010
  24. Geometry

    How do you find the angle of FAC when: D is in the interior of

    asked on October 16, 2006
  25. Math

    Student answers 75​% of the questions on a math exam correctly. If he answers 30 questions​ correctly, how many questions are on the​ exam?

    asked on December 15, 2018
  26. AP Chemistry

    The reaction of the molecules to produce ethane is C2H4(g) + H2(g) → C2H6(g). A mechanism for this reaction is shown below: (The figures show how the ethene molecule with two hydrogen molecules attached 'binds' to

    asked on April 1, 2018
  27. Language Arts

    where do you look up context clues to the meaning of a word

    asked on March 2, 2015
  28. chemistry, science

    Carbon is also removed from the atmosphere during the process of weathering. carbon dioxide combines with water to form carbonic acid. this reacts with calcium silicate (in rocks) to produce calcium ions, bicarbonate ions and silicon dioxide (silica) the

    asked on November 2, 2009
  29. General Chemistry

    Question 1: In the Balmer-Rydberg equation, what value of m is used to determine the wavelengths of the Balmer series? m=? Question 2: List a possible set of four quantum numbers (n,l,ml,ms) in order, for the highest energy electron in gallium,Ga.

    asked on October 25, 2009
  30. math work

    determine whether the planes are parallel, octagonal or neither a. 4x + 5y + z = -1 3x + 5y - 37z = -3 b. 2x - y - 3z = -5 -2x - 6y - z = 3

    asked on August 31, 2016
  31. algebra

    a store buys jeans for $24 each and marks them up 30%. what is the selling price of a pair of jeans?

    asked on August 8, 2013
  32. Chemistry

    Mercury dissolves in concentrated nitric acid, with the evolution of a reddish-brown gas, just as in the reaction shown in figure 5.4 on page 188 for copper. The oxidation state of the mercury after reaction is +2. Write a balanced net ionic equation for

    asked on March 7, 2013
  33. Chemistry

    Mercury dissolves in concentrated nitric acid, with the evolution of a reddish-brown gas, just as in the reaction shown in figure 5.4 on page 188 for copper. The oxidation state of the mercury after reaction is +2. Write a balanced net ionic equation for

    asked on March 7, 2013
  34. algebra

    In a basketball game, a regular basket was worth 2 points and a long-distance basket was worth 3 points. If there were 45 baskets in a game and 96 points total, how many regular baskets r and long-distance baskets l were made? Show the correct system of

    asked on December 21, 2012
  35. algebra

    You decide to market your own custom computer software. You must invest $3,255 for computer hardware, and spend $2.90 to buy and package each disk. If each program sells for $13.75, how many copies must you sell to break even?

    asked on December 21, 2012
  36. physics

    small mass hangs at rest from a vertical rope of length that is fixed to the ceiling. A force then pushes on the mass, perpendicular to the taut rope at all times, until the rope is oriented at an angle and the mass has been raised by a vertical distance .

    asked on May 22, 2012
  37. Calulus

    Consider the following function. f(t) = 3t2 − 3 (a) Find the average rate of change of the function below over the interval [3, 3.1]. (b) Compare this average rate of change with the instantaneous rates of change at the endpoints of the interval. (at t =

    asked on October 15, 2010
  38. Physics

    An electromagnetic wave has a wavelength of 6.2 x 10^14 m. What is the frequency of the wave? A. 2.0 x 10^6 Hz B. 4.8 x 10^-7 Hz C. 1.8 x 10^24 Hz D. 5.3 x 10^-22 Hz I got B..? When the currents in two parallel metal conductors are in the same direction,

    asked on April 11, 2009
  39. Physics help!

    Heat is added to an open container of a liquid. The liquid is brought to its boiling point and half the liquid boils away. Which of the following graphs shows how the temperature changes with this time period? Would the graph be just an ascending line?

    asked on April 3, 2009
  40. Physics

    Which of the following physical properties can be used to measure temperature using a thermometer? A. volume B. pressure C. density D. viscosity I think the correct answer is D?

    asked on April 3, 2009
  41. math please help?! studying for test!!

    If x = 9tanθ, use trigonometric substitution to write square root 81 + x^2 as a trigonometric function of θ, where -pi/2 < θ < pi/2

    asked on July 11, 2016
  42. Physics GR12

    A bungee jumper of mass 75kg is stadnding on a platform 53m above a river. The length of the unstretched bungee cord is 11m. The spring costant is 65.6N/m. Calculate the jumper's speed at 19m below the platform on his first fall. [Also, please state which

    asked on December 4, 2013
  43. Chemistry PLEASE HELP!

    Check all of the following statements which are TRUE for a titration. Select one or more: a. A suitable primary standard must be available. b. The concentration of the solution in the buret (the titrant) must be known before the titration is begun. c.

    asked on May 5, 2013
  44. physics

    what factors can affect a bodies temperature rise?

    asked on March 14, 2013
  45. algebra

    What is the solution of the system of equations? y = 3x + 7 y = x – 9

    asked on December 21, 2012
  46. science

    The greatest velocity a falling object reaches is called its what?

    asked on May 6, 2010
  47. Math

    Write an equation of the tangent function with period (3π)/8, phase shift -π/5, and vertical shift -2. a. y=tan((8x)/3 - (8π)/15) -2 b. y=tan((8x)/3 + (8π)/15) -2 c. y=tan((16x)/3 +(3π)/80) -2 d. y=tan((8x)/3 - (3π)/40) -2 I think it is A... or B?

    asked on May 29, 2009
  48. French1

    Complete with the correct form of the partitive. -Benoit va au marche. Il achete _____ fromage. would it be du? -Il achete _____ poires. would it be des?

    asked on May 8, 2009
  49. physics

    There are four coils of wire being used as electromagnets. They all have the same size and are made up of the same material but have a different number of loops. Which coil will produce a magnetic field with the maximum strength when the same amount of

    asked on April 13, 2009
  50. Physics...please help

    A beam of light passes from air to ethanol, with index of refraction of 1.36. If the angle of incidence ( 1) is 30.0 degrees, then calculate the angle of refraction, after light passes through ethanol and enters into air. A. 15.3 degrees B. 21.6 degrees C.

    asked on April 6, 2009
  51. Physics: true or false

    1. In a gas kept at a constant temperature, all molecules move with the same speed. A. True B. False 2. A hot object has more thermal energy than a similar cold object only because of greater kinetic energy. A. True B. False 3. The thermal energy of the

    asked on April 3, 2009
  52. math

    solve for n where it is p(n,5)=42xP(n-3)

    asked on August 28, 2008
  53. Chemistry

    The solubility of benzoic acid in water is 2.56g in 100cm3 at 79 C and 0.29g in 100cm3 at 20 C. What is the minimum volume of water in which 1g of benzoic acid can be dissolved at 79 C? I set up a dimensional analysis but since the question gives 2 sets of

    asked on June 25, 2008
  54. Physics- Newton's Laws in Space

    Hi! I would really appreciate it if you could help me think through these questions discussing Newton's Laws in Space... Directions: Consider the following scenarios ignoring the effects of gravity: 1. You are the capitan of a spacecraft traveling in the

    asked on December 2, 2006
  55. Finance

    Muriel would like to borrow $55,000 to pay one year’s tuition at a private U.S. university. She would like to make quarterly payments and finish repaying the loan in 4 years. If the bank is quoting her a rate of 8 percent compounded monthly. Determine

    asked on March 23, 2020
  56. Physics

    Two capacitors are identical, except that one is empty and the other is filled with a dielectric (k = 3.9). The empty capacitor is connected to a 17 -V battery. What must be the potential difference across the plates of the capacitor filled with a

    asked on September 26, 2019
  57. Math

    If the largest angle in a triangle is 70o, what is least possible value of the smallest angle of the triangle? 69o 1o 40o*** 39o 41o Is the correct answer 40?

    asked on March 8, 2018
  58. Global Village

    How have humans modified and adapted to the environment in Angola, Africa?

    asked on November 30, 2017
  59. Math

    Find the exact value of the trig function below. cos2Ø if sinØ = 2/5

    asked on March 19, 2017
  60. chemistry please help

    what is wrong with these names?provide the correct name for each. i.2-Dimethylpentane {4] ii.2-Ethylpentane {4} iii.5,5-Dimethyl-3-ethylhexane {4]

    asked on February 11, 2017
  61. Math

    For xyz manufacturing the fixed costs are $1200, material and labor costs combined are $2 per unit, and the demand equation is: p=100/√q What level of output will maximize profit? Show this occurs when marginal revenue equals marginal cost. What is the

    asked on January 9, 2017
  62. math work

    evaluate the expression ( 94 93) please help with this! I don't know what to do! ps there is a big bracket that is around the 94 and the 93, i just couldn't enter that into the box.

    asked on August 31, 2016
  63. calc

    given that ln2=0.7 and ln5=1.6, find: 1) ln(1/25) 2) e^3ln2 - ln5

    asked on May 17, 2016
  64. math, physics

    A motorboat goes upstream on a river and covers the distance between two towns on the riverbank in 6 hours. It covers this distance downstream in 5 hours. If the speed of the stream is 1.5 km/h, find the speed of the boat in still water. [This problem is

    asked on November 10, 2015
  65. maths

    How do I draw a 64 degree angle in between a 6cm by 5cm triangle please

    asked on June 12, 2015
  66. Physics

    A ball is thrown at 15.5 m/s at 42° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it

    asked on September 26, 2014
  67. Chemistry

    Calculate the cell potential for the following reaction as written at 25.00 °C, given that [Zn2 ] = 0.842 M and [Ni2 ] = 0.0100 M. Standard reduction potentials can be found here. reaction: Zn(s)+Ni^2+(aq)--->Zn^2+(aq)+Ni(s) standard reduction Zn: -.76

    asked on May 4, 2014
  68. Please any math helper!!

    How do you do these questions, I have all my steps done until the last one: 2x(2x)^2: 2x(4x^2)? Now do I multiply or add the big numbers? also Im having trouble on these: 1. x^2(xy)^3: x2(x^3y^3) 2. 3x^2(2x)^3: 3x^2 (8x^3) 3. -2x^2y(3xy^2)^2 4. -(3x)^2:

    asked on September 11, 2013
  69. Physics II

    Two charges attract each other with a force of 3.0 N. What will be the force if the distance between them is reduced to one-ninth of its original value?

    asked on September 10, 2013
  70. Chemistry 104

    Calculate Eo (reduction potential) for the following balanced reaction. NiO2 + 2H2O + 2Fe(OH)2 Ni(OH)2 + 2Fe(OH)3

    asked on May 3, 2013
  71. Chemistry

    How many grams of magnesium nitride are formed from 45.1 moles of magnesium?

    asked on April 16, 2013
  72. math

    y^2+4y-32=0 what is the greatest factor

    asked on March 5, 2013
  73. Social Studies

    "How was the free-trade trial of 1849 a victory for the Metis?" Was it because the 4 Metis offenders were given mercy and it also ended the HBC monopoly?

    asked on January 13, 2013
  74. Mathematics

    A jar has eight red, nine blue, and ten green marbles. What is the least number of marbles that you can remove from the jar and be certain that you have three of the same color?

    asked on September 30, 2012
  75. english homework

    Hello! I have to write a dialogue with 3 characters, the subject is "hello doctor!" I probably make a doctor with a patient and the patient's mother, my idea consists of simulating (a lot of )illnesses in order to not to go to school (it's about the little

    asked on April 25, 2011
  76. physics

    a crate is pushed to the top of a frictionless inclined plane 15 m long with a force of 25 N. If the crate weighs 125 N, how high is the inclined plane? 0.5 m 1 m 3 m or 5 m

    asked on February 19, 2011
  77. science

    as you push a lawnmower the horizontal force is 300 N. If you push the mower a distance of 500 m, how much work do you do?

    asked on November 16, 2009
  78. science

    how much power, in watts, is needed to cut a lawn in 50 min if the work ivolvled is 100,000 j

    asked on November 15, 2009
  79. science

    suppose you are pulling a wagon with the handle at an angle. How can you make your task easier?

    asked on November 15, 2009
  80. math

    Simplify: (-1-2i)+(4-6i) I get 3-8i and 5-8i... confused, which one is it?

    asked on June 24, 2009
  81. Math

    Find the distance between P(-4,3) and the line with equation: 2x - 5y = -7 a. (14√29)/29 b. 0 c. (-16√29)/29 d. (16√29)/29 I got C but would it be positive, like D?

    asked on June 1, 2009
  82. math

    In triangle ABC, a=7.8, b=4.2, c=3.9. Find B a. 15.1° b. 148.7° c. 78.9° d. 16.2 ° It is D, right?

    asked on May 28, 2009
  83. french

    Le train arrive et les voyageurs montent _____. a. sur la voie b. en voiture c. devant la gare d. au kiosque I know it isn't d.... not sure though! Le train arrive Presque toujours _____. a. en retard b. a l'heure c. le matin d. l'horaire is it b....?

    asked on May 4, 2009
  84. French

    Je descends _____. a. au kiosque b despuis 45 minutes c. au prochain arrete d. a la boucherie I think it is c or b?

    asked on May 4, 2009
  85. french

    Choose the correct noun that matches the stated verb below. Choisir a. la fin b. un choix c. la vue d. un atterrissage Is it b? Voir a. la fin b. un choix c. la vue d. une croyance Is it C?

    asked on May 4, 2009
  86. French 1

    C'est _____ voie? a. quelle b. quelles c. quel d. quele Is it C? Tu voyages avec ______ compagnie aerienne? a. quelle b. quelles c. quel d. quele Is it B?

    asked on May 4, 2009
  87. French 1

    Ils regardent les vetements pour hommes dans ______ de la boutique. a. la caisse b. les soldes c. al vitrine d. au rayon I am thinking that it is c or b??? La Martinique est dans la mer _____ Antilles. a. de b. des c. de l' d. de la is it b?

    asked on May 3, 2009
  88. English- Medieval Period

    This refers to Sir Gawain and the Green Knight Gawain's actions at the castle reveal that the knight's moral code values: a. strength b. courage c. loyalty d. NONE OF THE ABOVE I put B, I am not sure though.... ???

    asked on April 23, 2009
  89. Physics

    A current-carrying wire is oriented at right angles to a uniform magnetic field. If the length of the wire is 0.50 m and it experiences a force of 0.90 N while carrying a current of 4.0 A, what is the strength of the magnetic field? I did the work and got:

    asked on April 22, 2009
  90. Physics!!

    An electromagnetic wave is produced by: A. an accelerating charged particle or changing magnetic fields B. an accelerating uncharged particle and changing magnetic fields C. a stationary charged particle and a magnetic field D. any moving particle and a

    asked on April 12, 2009

    When a conducting sphere is charged positively, initially the charge is deposited on the left side. However, due to the sphere's conducting nature, the charge spreads uniformly throughout the surface to the sphere. Charge is uniformly distributed because:

    asked on April 8, 2009
  92. physics

    In a series current, each circuit has the same: A. current B. voltage C. capacitance D. resistance If a resistor is added to a series circuit, the equivalent resistance: A. increases B. decreases C. remains the same D. becomes zero

    asked on April 7, 2009
  93. physics

    A negatively charged balloon sticks to a wooden door. However, an uncharged balloon does not stick to a wooden door. What is the nature of the charge on the wooden door? A. Electrically neutral B. Positively charged C. Conductor D. Lacking protons I am

    asked on April 7, 2009
  94. physics: true or false

    A concave mirror of focal length 10 cm forms an upright and diminished image of a real object placed at a distance of 5 cm from the mirror. A. True B. False A convex lens is used to obtain an enlarged virtual image. A. True B. False Not too sure on the

    asked on April 6, 2009
  95. Physics!!

    A car moving at 16.0 m/s, passes an observer while its horn is pressed. Find the difference between the frequencies of sound heard when the car approaches and when it recedes from the stationary observer. The velocity of sound is 343 m/s and the frequency

    asked on April 4, 2009
  96. Physics: waves

    You are creating a transverse wave in a rope by shaking your hand from side to side. Without changing the distance that your hand moves, you begin to shake it slower and slower. What happens to the frequency? What happens to the amplitude? What happens to

    asked on April 3, 2009
  97. Math

    a 4 × a 3 = a x

    asked on April 20, 2020
  98. History

    Why do I have to take History in 6th Grade

    asked on October 2, 2019
  99. physics

    a ball is thrown upward from a bridge with a speed of 48 ft/s. It misses the bridge on way down and lands in water 160 ft. below. Find how long the ball rises, how high it goes, how long it is in the air, and its velocity when it strikes the water?

    asked on March 3, 2019
  100. Math

    The price of a calculator is $12.50. The sales tax is 7.5%. How much will you pay for the calculator?

    asked on December 19, 2018


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