# sophie

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

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

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

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.

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

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)

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

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?

9. ## Math

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

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.

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

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

13. ## Social Studies

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

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

15. ## math

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

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.

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

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)

19. ## Chemistry

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

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

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

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?

23. ## math

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

24. ## Geometry

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

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?

26. ## AP Chemistry

The reaction of the molecules to produce ethane is C2H4(g) + H2(g) ÃƒÂ¢Ã¢â‚¬Â Ã¢â‚¬â„¢ C2H6(g). A mechanism for this reaction is shown below: (The figures show how the ethene molecule with two hydrogen molecules attached 'binds' to

27. ## Language Arts

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

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

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.

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

31. ## algebra

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

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

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

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

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?

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 .

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 =

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,

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?

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?

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

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

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.

44. ## physics

what factors can affect a bodies temperature rise?

45. ## algebra

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

46. ## science

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

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?

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?

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

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.

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

52. ## math

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

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

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

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

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

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?

58. ## Global Village

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

59. ## Math

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

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]

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

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.

63. ## calc

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

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

65. ## maths

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

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

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

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:

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?

70. ## Chemistry 104

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

71. ## Chemistry

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

72. ## math

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

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?

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?

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

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

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?

78. ## science

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

79. ## science

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

80. ## math

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

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?

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?

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....?

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?

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?

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?

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?

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.... ???

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:

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

91. ## PHYSICS

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:

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

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

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

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

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

97. ## Math

a 4 × a 3 = a x

98. ## History

Why do I have to take History in 6th Grade

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?