1. chemistry

Calculate the standard free-energy change for the following reaction at 25 °C. 2Au^3+(aq) + 3Ni(s) -->2Au(s) + 3Ni^2+(aq)

2. chemistry

Rank these species by their ability to act as an oxidizing agent. Na^+ I2 Cr^3+ F2 Put best oxidizing agent first and continue to have best reducing agent last.

3. PHYSICS

Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 28.0 in a direction 60.0 west of north. Jane walks 10.0 in a direction 30.0 south of west. They then stop

4. Math

You want to have 1.5 million in real dollars in an account when you retire in 40 yeras. the nominal return on your investment is 11 percent and the inflation rate is 3.8 percent. What real amount must you deposit each year to achieve your goal? My answer

5. Chemistry - Enthalpy reactions

What is the reaction enthalpy for CaCO3(s) --> CaO(s) + CO2(g)? should i be using a enthalpy reaction table?

6. Gen Chem

At elevated temperatures, solid silicon reacts with chlorine gas to form gaseous SiCl4. At some temperature, the equilibrium constant for this reaction is 0.30. If the reaction is started with 0.10 mol of SiCl4 in a one-liter flask, how much Cl2 will be

7. Chemistry

If the percent yield was 81.5%, how many grams of aluminum were used to prepare 20.0 g of potassium alum?

8. Chem II

PCl5 dissociates according to the reaction: PCl5(g) ↔ PCl3(g) + Cl2(g). One mole of PCl5 was placed in one liter of solution. When equilibrium was established, 0.5 mole of PCl5 remained in the mixture. What is the equilibrium constant for this reaction?

9. Chemistry

How many moles and how many grams of potassium alum, KAl(SO4)2 · 12 H2O, can be prepared from 5.00 g of aluminum?

10. Chemistry

Charges on the metal MgSO4 = +2 NiSO4*6H2O = +2 CoCl2*6H2O = +2 KCr(SO4)2*12H2O = +3 CuSO4*5H2O = +2 (NH4)2Cr2O7 = +2 FeSO4*7H2O = +2 MnCl2*4H2O = +2 FeCl3*6H2O = +3

11. Chemistry

Calculate the percent yield of alum if you obtained 75.0 g of potassium alum from 5.00 g Al.

1- at 12 noon, leslie recorded the temperature as 56F. the temperature had increased by 8F from 10 A.M. the temperature at 8 A.M. was 2F warmer than it was at 10 A.M. what was the temperature at 8 A.M? MY Son write the answer is - 62F 2- the temperature at

13. geometry

In triangle FGH, the measure of angle F is 42 degrees and an exterior angle at vertex H has a measure of 104 degrees. What is the measure of angle G?

14. physics

A science museum has asked you to design a simple pendulum that will make 25.0 complete swings in 85.0 {\rm s}. How long should the pendulum be? in meters

15. Chem (Thermodynamics)

Calculate the temperature (in ºC) to which silver ore, Ag2O, must be heated to spontaneously decompose the ore to oxygen gas and solid silver metal at standard state. (ΔHºf of Ag2O(s) = –31.05 kJ/mol; Sº values: Ag(s), 42.55 J/mol•K; O2(g), 205.1

16. Catering(Gourmet Essentials)

1. In the dining room brigade system, the positions of maitre d’hôtel and/or captain may be combined under the title of A. communard. C. chef de salle. B. boulanger. D. sommelier. 2. Rachel and Mark are discussing the requirements of a healthy diet.

17. science

An apple is dropped from a window 20 m above the ground. How long does it take the apple to reach the ground? What is its final speed?

18. AP CHEMISTRY

Calculate the pH at the equivalence point in titrating 0.100 M solutions of each of the following with 0.080 M NaOH. a)hydrobromic acid (HBr) b)chlorous acid (HClO2) c)benzoic acid (C6H5COOH)

19. physics

An 840 Kg roller coaster car is launched from a giant spring of constant k=31 kN/m into a frictionless loop-the-loop track of radius 6.2 m, as shown below. What is the minimum amount that the spring must be compressed if the car is to stay on the track?

20. arithmetic

if 6 times the sixth term is equal to 15 times the fifteenth term ,find its 21st term

21. statistics

Suppose your statistics instructor gave six examinations during the semester. You received the following grades (percent correct): 89, 64, 88, 89, 91, and 75. Instead of averaging the six scores, the instructor indicated he would randomly select five

22. Chemistry

Calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l) ¨ 2 KAl(OH)4 (aq) + 3 H2 (g)

A small, spherical bead of mass 1.9 g is released from rest at t = 0 in a bottle of liquid shampoo. The differential equation of motion is dv/dt = g−b/m*v . The terminal speed is observed to be 1.6 cm/s. The acceleration of gravity is 9.8 m/s2 . Find the

24. English

"Christina Nehring makes allusions to classical myths and 18th and 19th century writers in her essay "Fideltiy with a Wandering Eye". How do these allusions support her argument about women and sex? ALSO How effective are these allusions"

30. HELP PHYSICS!!!!

a worker pushes a 7kg shipping box along a roller track. assume friction is small enough to be ignored because of the rollers. the worker's push is 25 N directed down and to the right at an angle of 20 degrees. 1. determine the horizontal component of the

31. computers

Which of the following html tags would you use after a table? A. B. C. D. i say b.

32. Physics

A 3.00 - µF and a 4.00 - µF capacitor are connected in series, and this combination is connected in parallel with a 2.00 - µF capacitor (see the figure ). What is the net capacitance? 3.00 - µF 4.00 - µF 2.00 - µF 26.0 V

33. Physics

A skier starts from rest at the top of a hill. The skier coasts down the hill and up a second hill, as the drawing illustrates. The crest of the second hill is circular, with a radius of 38.3 m. Neglect friction and air resistance. What must be the height

34. Chemistry

Calculate the volume (in mL) of 9.0M H2SO4 that you would need to convert 0.070 moles of KAl(OH)4 to K2SO4 and Al2(SO4)3 according to the following equation: 2 KAl(OH)4 + 4 H2SO4->K2SO4 + Al2(SO4)3 + 8 H2O

35. Elementary statistics

Nine apples, four of which are rotten, are in a refrigerator. Three apples are randomly selected without replacement. Let the random variable x represent the number chosen that are rotten. Construct a table describing the probability distribution, then

36. Calculus (Area Between Curves)

Find the area of the region bounded by the curves y^2=x, y-4=x, y=-2 and y=1 (Hint: You'll definitely have to sketch this one on paper first.) You get: a.) 27/2 b.) 22/3 c.) 33/2 d.) 34/3 e.) 14

37. Calculus (Area Between Curves)

Find the area of the region IN THE FIRST QUADRANT (upper right quadrant) bounded by the curves y=sin(x)cos(x)^2, y=2xcos(x^2) and y=4-4x. You get: a.)1.8467 b.) 0.16165 c.) 0.36974 d.) 1.7281 e.) 0.37859

38. physics

Asteroids can be classified into two broad groups based on their composition and location: carbon-rich asteroids dominate the outer part of the asteroid belt, whereas metal-rich asteroids dominate the inner part of the belt. Analysis of the fragment we

39. chemistry

Calculate the pH of a 0.0019 M HNO3 solution. 2.7

40. physics

explain why a child on a swing comes to rest directly below the top of the swinng

41. Math

A cylindrical tin can has a radius of 4.5cm and a height of 5 cm (a)What is the surface area of the can (b)What is its volume? (c)What is the cans capacity could somebody please answer this question so i can get past with math

42. Physics

A circular loop of wire with radius 0.0450 m and resistance 0.154 R is in a region of spatially uniform magnetic. The magnetic field is directed out of the plane. The magnetic field has an initial value of 7.89 T and is decreasing at a rate of -0.630 T/s.

43. physics

An apple falls from an apple tree growing on a 20° slope. The apple hits the ground with an impact velocity of 14 m/s straight downward. What is the component of the apple's impact velocity parallel to the surface of the slope?

44. Trig

When two bubbles cling together in midair their common surface is part of a sphere whose center D lies on the line passing through the centers of the bubble. Also, angles ACB and ACD are 60 degrees. Show that the radius r of the common face is given by

45. Physics

Two identical cars (m = 1350 kg) are traveling at the same speed of 23.9 m/s. They are moving in the directions shown in the drawing. What is the magnitude of the total momentum of the two cars?

46. chemistry - Molar enthalpy

When 10.0 g of KOH is added to 100.0 g water, the solution's temperature increases from (25.18 C) to (47.53 C). What is the molar enthalpy of solution for KOH? i tryed q=(m)x(c)x(delta T) didn't really work. i got 22.35 J do i use that to find the molar

47. chemistry

Calculate the pH of a 0.0019 M HNO3 solution.

48. Calculus (Definite Integrals)

How many definite integrals would be required to represent the area of the region enclosed by the curves y=(cos^2(x))(sin(x)) and y=0.03x^2, assuming you could not use the absolute value function? a.) 1 b.) 2 c.) 3 d.) 4 e.) 5

49. Chemistry

What how can I calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l)->2 KAl(OH)4 (aq) + 3 H2 (g) Please show steps ..

50. chemistry

3.30 mL of vinegar needs 43.0 mL of 0.150 M NaOH to reach the equivalence point in a titration, how many grams of acetic acid are in a 1.70 qt sample of this vinegar?

51. chemistry

what are the charges on the metals? MgSO4 NiSO4*6H2O CoCl2*6H2O could you just explain how you determined the first one? I can take it from there.

52. Physics

A high-jumper clears the bar and has a downward velocity of -6.00 m/s just before landing on an air mattress. The mass of the high-jumper is 50.4 kg. What is the magnitude and direction of the impulse that the air mattress exerts on her? Assume that upward

53. Accounting

If Tom, an accountant, agrees to provide accounting services to Carl, a friend, in exchange for Carl fixing Tom's office floor, then: (Points : 1) Tom must report income on his tax return. Carl must report income on his tax return. Neither Tom nor Carl

54. Math

A ball has a radius of 56mm a)Calculate the surface area b)what is the volume of the sphere could somebody please answer for my math homework I need help

55. physics

A ball of mass 540 g hangs from a spring whose stiffness is 155 newtons per meter. A string is attached to the ball and you are pulling the string to the right, so that the ball hangs motionless, as shown in the figure. In this situation the spring is

56. Chem (Thermodynamics)

The standard molar enthalpy of fusion and the standard molar enthalpy of vaporization of benzene are 10.9 kJ/mol and 31.0 kJ/mol, respectively. Calculate the standard molar entropy changes for the solid ↔ liquid and liquid ↔ vapor transitions for

57. Math

A farmer needs to enclose three sides of a pasture with a fence (the fourth side is a river). The farmer has 42 meters of fence and wants the pasture to have an area of 220 sq-meters. What should the dimensions of the pasture be? (For the purpose of this

58. CALCULUS

In Seattle on September 30, the temperature hours after midnight was given by the function y=60 + 12sin((pi/x)(x-11)) What was the average temperature over the period from 8 A.M. until 10 P.M.?

59. Mathematics

A rectangular block of lead with dimension 43 cm x 53 cm x 63 cm is melted to mould spherical balls of 3 cm radius. How many balls are made? (Round your answer to the nearest whole number and take Pi as 3.14)

60. chemistry

Calculate the cell potential for the following reaction as written at 53 °C, given that [Zn2 ] = 0.862 M and [Ni2 ] = 0.0110 M. Standard reduction and oxidation potentials can be found here. Zn(s) + Ni^2+(aq) --> Zn^2+(aq) + Ni(s)

61. chemistry

2H2(g)+S2----------->2H2S A.)how would the equilibrium be affected given the following: - increase in temperature= - increase in hydrogen concetration= - increase in reaction container volume= B.) what is equilibrium expression?? please help anywork would

62. chemistry

ndicate whether each solution is acidic, basic, or neutral. a. [H3O+] = 6.9 x 10-1 M This solution is acidic. b. [H3O+] = 8.2 x 10-13 M This solution is basic. c. [H3O+] = 3.2 x 10-1 M This solution is acidic.

63. math

Okay,whenever I ask jiska for math help.. or any help I ALWAYS get those questions wrong -.-

64. Chemistry

For H2(g) + Br2(g) -> 2HBr(g) k=64

65. physics

Ayesha exerts a force of 186 N on a lever to raise a 2.70 × 103-N object to a height of 29.0 cm. If the efficiency of the lever is 83.3 percent, how far does Ayesha move her end of the lever?

66. stats

a sample of 16 atm transactions shows a mean transaction time of 67 seconds with a standard deviation of 12 seconds. State the hypotheses to test whether the mean transactiontime exceeds 60 seconds

67. math

Why do my numbers scramble when I post math homework into my classroom forum posting box when I click on post message?

68. chemistry

What is the solubility of CaF2 in a buffer solution containing .30 M HCHO2 and .20 M NaCHO2? (Consider the equation CaF2(s) + 2H+(aq)--> Ca2+(aq) + 2HF(aq) and solve the equilibrium problem)

69. math

A 4 1/2ft ribbon is cut into 6 equal-length pieces.How long is each piece?

70. Chemistry 12 - Gases

A gas is initially at 345 K, 821 torr, and occupies a volume of 5.85 L. What volume will the gas occupy if the temperature and pressure decrease, respectively, to 7 degrees celsius and 0.921 atm?

71. Pre-Cal

This exercise is based on the following table, which lists interest rates on long-term investments (based on 10-year government bonds) in several countries in 2008. How long, to the nearest year, will it take an investment in Germany(4.3%) to triple its

72. physics

Ricardo and Jane are standing under a tree in the middle of a pasture. An argument ensues, and they walk away in different directions. Ricardo walks 25.0 in a direction 60.0 west of north. Jane walks 14.0 in a direction 30.0 south of west. They then stop

73. Chemistry

Calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l)->2 KAl(OH)4 (aq) + 3 H2 (g)

74. Trig

A pilot is flying over a straight highway. He determines the angles of depression to two mileposts, 3 mi apart, to be angle x = 31° and angle y = 49°, as shown in the figure. (Round your answers to two decimal places.) Find the distance of the plane from

75. English

how would you edit, misty could you walk ms millers dog on tuesday mom asked

77. physics

A spring gun (k = 26 N/m) is used to shoot a 56-g ball horizontally. Initially the spring is compressed by 17 cm. The ball loses contact with the spring and leaves the gun when the spring is still compressed by 12 cm. What is the speed of the ball when it

What is a vital process performed by proteins embedded in cell membranes?

79. physics

A ski trail makes a vertical descent of 77 m. A novice skier, unable to control his speed, skis down this trail and is lucky enough not to hit any trees. If the skier is moving at 17 m/s at the bottom of the trail, calculate the total work done by friction

How long will it take a $400 investment to be worth$700 if it is continuously compounded at 12% per year? I got the answer 6.71 years, but it was wrong, using the A=Pe^rt Thank you

81. physics

A small rocket is fired directly upwards with an initial velocity of 100m/s, How many seconds will it take to reach its maximum height?

82. Pre-Cal

Convert the given exponential function to the form indicated. Round all coefficients to four significant digits. f(x) = 9e^3x; f(x) = Ab^x How do i solve the equation with this formula? Thanks

83. Kinesology

A person performs a work task at a mechanical efficiency of 20 percent and at total energy output of 15kcal/min. How much energy(kcal/min) is lost as heat? and how much energy(kcal/min) is used to actually perform the work?

84. chemistry

2Al(S)+3H2O(g)---->Al2O3(s)+6H2(g) A.) what is the correct equilibrium expression?

85. Chemistry

Consider the reaction in aqueous solution: 6 HCl + 2 KMnO4 + 5 H2O2 ---> 5 O2 + 2 MnCl2 + 2 KCl + 8 H2O 1.) Write the total ionic equation. 2.) Write the net ionic equation. 3.) For each species (molecule or ion) in the net ionic equation, assign oxidation

86. physics

A 0.50-kg block, starting at rest, slides down a 30.0° incline with kinetic friction coefficient 0.30 (the figure below). After sliding 84 cm down the incline, it slides across a frictionless horizontal surface and encounters a spring (k = 33 N/m). (a)

87. Chemistry

What are the boiling point of a solution prepared by dissolving 2.40g of biphenyl(C^12H^10) in 75.0g of benzene? The molecular weight of biphenyl is 154..

88. chemistry

The voltage generated by the zinc concentration cell described by, Zn(s)|Zn2 (aq, 0.100 M)||Zn2 (aq, ? M)|Zn(s) is 23.0 mV at 25 °C. Calculate the concentration of the Zn2 (aq) ion at the cathode.

My investment in Edgewater stocks is losing half its value every 2 years. Find and interpret the associated decay rate. If I use the formula y=100(1/2)^x (

90. math

The roof of a building is shaped like a square pyramid, with a base of 18m by 18m. If the slant height of the roof is 12m and roofing costs 5.75m2, how much will it cost for roofing material?

91. chemistry

A What mass of KCl is needed to precipitate the silver ions from 26.0 mL of 0.100 M AgNO3 solution?

92. math

The roof of a building is shaped like a square pyramid, with a base of 18m by 18m. If the slant height of the roof is 12m and roofing costs 5.75m2, how much will it cost for roofing material? This is the last question for my homework could u answer this

93. Chemistry

What are the boiling point of a solution prepared by dissolving 2.40g of biphenyl(C^12H^10) in 75.0g of benzene? The molecular weight of biphenyl is 154..

94. algebra

Simplify 5m - 13n - n + 4m.

95. Physics

A student, starting from rest, slides down a water slide. On the way down, a kinetic frictional force (a nonconservative force) acts on her. The student has a mass of 73 kg, and the height of the water slide is 12.0 m. If the kinetic frictional force does

96. Chemistry

How many moles of chlorine are needed to react with 2.5 moles of sodium?

164. physics

PLS HELPPPPPPPPP You are camping with two friends, Joe and Karl. Since all three of you like your privacy, you don't pitch your tents close together. Joe's tent is 15.0 from yours, in the direction 26.0 north of east. Karl's tent is 26.5 from yours, in the

165. physics

if 12,000 j of work is used to raise a large crate to a 4.1 m high shelf in a warehouse, then what was the weight of the crate of newtons?

166. Gen Chem

Consider the reaction: 2 SO2(g) + O2(g) ↔ 2 SO3(g). If, at equilibrium at a certain temperature, [SO2] = 1.50 M, [O2] = 0.120 M, and [SO3] = 1.25 M, what is the value of the equilibrium constant?

167. Speech

Ballad Verse poem with 3 stanzas, 8 lines per stanza and the last line is the same or very similar to the 1st line.

168. math

the book has a mass of 2 kilograms. what is the mass of 3 of these books?

169. Calculus AP need help!

its difficulty problem. find dy/dx by implicit differentiation 1.4 cos x sin y = 1 2.tan(x/y)= x+y

170. physics

In this current of 12 volts, the voltmeter registers a voltage drop of 4 volts across 1 resistor, what is the voltage drop across the other resistor?

171. Math

Can someone please tell me Why is (4x + 5) (2x - 1) + (x - 9) (2x - 1) not in factored form? What is the correct final factored form? What is this factoring method called?

172. Calculus

Let f(x)=(2x^3-x^2+2x+1)/(x^2+1). What is the equation of the oblique asymptote of f(x)? Can someone show me how to do the long division one for this question. I have always used synthetic division but realized there are some questions that require to do

173. English

Are the verbs in these sentences passive voice, weak or past tense. My answers: 1. The book was informative but too long.--weak or past or both?? 2.The teachers have sent the book to the publisher.--past 3.The essay has been shortened by ten pages.-- past

174. algebra

how do you find the square root symbol on the computer

175. calculus

Determine values of a and b that make the given function continuous . 16sinx÷x f(x)= a bcosx It's a bicewise function

176. geometry

if a is (3,0) and b is (11,6) and ab is 2x+4 then what does ab equal?

How would you set up this problem if instead of using 1000 feet of fencing, only 750 feet of fencing is used? Solve the problem to find the maximum area..

I'm having a problem answering some questions we're learning about shopping and stuff like that so could someone check these please. 1. ¿Qué buscas cuando vas te compras? Busco variedad de cosas cuando voy me compro. 2. ¿Quien es la persona mas de moda

179. math

How many people would it take to produce a human pyramid 12m tall? Give various methods

180. PHYSICS

A 50KG BLOCK IS BEING PULLED BY a 200-N FORCE ON A HORZONTAL ROUGH SURFACE AS SHOWN IN DIAGRAM.IF THE COEFFICIENT OF KINETIC FRICTION BETWEEN THE BLOCK AND THE SURFACE IS 0.3. FIND THE ACCELERATION OF THE BLOCK

181. HIS/115

Compare European settlements in New England, the Middle Colonies, the Chesapeake, and the South in terms of goals, governments, social structures, and religions. What similarities do you find most remarkable? What differences do you find interesting? Why?

182. Math

henry is 5ft tall and casts a shadow that is 15ft long a tree next to henry casts a 324-ft long shadow. how tall is the tree?

183. algebra

Find the solution to 36z^2+96z+15=0

184. physics

You walk 50 m to the north, then turn 60° to your right and walk another 45 m. How far are you from where you originally started?

185. math

if the width of a baseball field is 40 meters and the perimeter is 120 meters what is the length?

186. physics

a 1000 kg car is driven at 20 m/s. How many seconds would it take a 2000 N force to stop the car?

187. Chemistry

A particular reaction has an activation energy of 51.6kJ/mol-rxn. How much faster is the reaction at 50 degrees C versus 25degrees C? I do not know how to start this!

Find the slop of the tangent to the curve y=(10-sqrt x)(5+sqrt x) at x=25

189. English

I left out a few sentences. Thank you very much, Writeacher. 1) ames is particularly interested in the language of youth. He believes that the greatest influence on teenagers is the media. It’s the constant bombardment from advertising that youth cannot

190. Physics

A beam with a length of 7 m and a mass of 110 kg is attached by a large bolt to a support at a distance of d = 3 m from one end. The beam makes an angle θ = 30° with the horizontal, as shown in the figure. A mass M = 492 kg is attached with a rope to one

191. statistics

We have a group of 75 people and for their raw scores, you are given the Mean (M = 30) and variance (VAR = 16). Assuming a normal distribution of scores, what is the probability of randomly selecting a score between 27 and 31 for this group?

192. MATH

ELLE IS MAKING A PATTERN.SHE IS USING RECTANGLES 1 CENTIMETER WIDE AND 2 CENTIMETERS TALL. WHAT WILL BE THE PERIMETER OF THE SIXTH SHAPE IN THE PATTERN?

193. physics

How could the age of this asteroid fragment be determined?

John jogged downhill at 6mi/hr and then jogged back up at at 4mi/hr. If the total jogging time was 1.25 hours, how far did he jog in all?

195. physics

1A) A filament lamp- cost- 80p effiency- 0.2 expected life- 1000 hours a compact fluorescent lamp (CFL)- cost- £3.00 effiency- 0.8 expected life- 8000 hours a filament lamp with a power rating of 100W gives 2000 units of light. what power rating would a

196. MATH

veify that each equation is an identity cos2x+tan2xcos2x=1 sin4x-cos4x/sin2x=1-cot2x

197. HARDEST MATH QUESTION IN THE UNIVERSE

James jogged downhill at 6mi/hr and then jogged back up at at 4mi/hr. If the total jogging time was 1.25 hours, how far did he jog in all?

asked by HARDEST MATH QUESTION IN THE UNIVERSE
198. physics! HELP!

A filament lamp- cost- 80p effiency- 0.2 expected life- 1000 hours a compact fluorescent lamp (CFL)- cost- £3.00 effiency- 0.8 expected life- 8000 hours a filament lamp with a power rating of 100W gives 2000 units of light. what power rating would a CFL

199. Chemistry

I need to find the volume of 5.44 molar nitric acid needed to completely react with 6.27 grams of Ca(OH)2.

225. 5g maths

to estimate the adult height of a child you can multiply his hight at age 2 by 2 when he was 2years old about how tall was a 75-inch tall man

226. algebra

Graph the solution set for the system of linear inequalities y=2x-6

227. Math

Explain in writting how to divide .12 by 8. (without using fractions) fifth grade

228. algebra

To solve ax = b for x multiply both sides of the equation by?

229. spanish

te gustan los deportes? si te gustan si me gusta si me gustan which one is the correct response

230. statistics

Suppose that 2,000 scientists compute 90% confidence intervals for parameters they are interested in. How many of these intervals would we expect to successfully capture their parameters

231. calculus

determine the intervals where f(x) = ln(6x-24) is continuous

235. Physics

The drawing shows a skateboarder moving at 5.55 m/s along a horizontal section of a track that is slanted upward by 40.9 ° above the horizontal at its end, which is 0.724 m above the ground. When she leaves the track, she follows the characteristic path

236. managerial economics

Qd=15.0-0.2P where Qd is annual quantity demanded in millions of units and P is the wholesale price. Incurred cost of $60 million. Production cost is$5/unit. (1) what is wholesale price, (2) production annually, (3) annual profit? Given this is a monopoly

237. algebra

3 pencils cost $.03 more than 2 pen,and 1 pen and 10 pencils together cost$2.40.Determine the cost of each writing tool

238. Math

A pipe tapers 0.75 inches for every 30 inches of length.Use a constant of direct variation to determine the amount of taper of a 105 inches length. I need help with finding a constant of direct variation.

239. question

anyone who knows that the school of journalism in Indiana university is a good one? how about the major public relation in the school?

240. college calculus

how do i solve sin(x)+2cos(2x)=0

241. Calculus AB

The integral from a to b of f(x)/g(x) equals ln[(g(b)/g(a)]. Find g'(x), and explain your reasoning.

242. math

how to find the area of a square

243. math

a textbook has 50 more than two times the number of pages as a workbook. combined, they have 230 pages. how many pages are in the textbook?

244. Constitutional Law

What authority stems from the necessary and proper clause? just wanting some links that will help get the ball rolling please.

245. physics

if the force applied perpendicularly on a given surface is applied on a small area then pressure is?

246. physics

describe how would you find the dencity of a human

247. Prob&stats

Search results for: Using numbers 1-20 what is probability a randomly chosen number is either an even number or a number greater than 14?

248. Writing

Need help completing a 5-7 page paper on the importance of Academic Honesty with proper APA format with 3-5 peer reviewed references

249. math

A contactor is making preparations to re-tile the border around a swimming pool. The pool measures 60 feet by 30 feet. The border extends 1 foot from each side of the edge of the pool. The contractor is going to use that are 0.25 feet squared. A case of

250. math

what is the area of a triangle with 18 inches and the height is 12 inches she wants to cover the flag with red contruction paper how many square inches of paper will she need?

251. stat

What is the probability of getting a license plate that has a repeated letter or digit if you live in a state that has four letters followed by three numerals followed by two letters? (Round to the nearest whole percent.)

252. Physics help?

The total resistance is 13.0 kΩ, and the battery's emf is 28.0 V. If the time constant is measured to be 34.0 µs . Calculate the total capacitance of the circuit. Calculate the time it takes for the voltage across the resistor to reach 11.0 V after the

253. math

In polk middle school, 45% of the students are 6th graders, 35% of the students are 7th graders and the remainder are 8th graders. Would a circle graph of this data that had 3 sections each with a central of 120% be misleading?

254. ALGEBRA II

(3b-2)/(b+1) = (4)- (b+2)/(b-1) The (b+2)/(b-1) is separate from the 4. the 4 isn't included in the division

256. chemistry 103

what is electron cofiguration?

257. Math

4 students each wrote 2 number patterns Shandi 3,6,9,12... 5,15,20,25 Latrell 1,3,5,7...3,5,7,9 Hong-Li 0,1,3,6...1,2,4,7 Adriano 2,3,5,7...11,13,17,19 Which student's number patterns used only prime numbers? A.Shandi B.Latrell C.Hong-Li D.Adriano D?

valarie makes 2 pans of brownies for a bake sale. She cuts each pan into 12 brownies. She sell 15 brownies. What fractional part of a pan of brownies did valarie sell?

260. algebra

Annual profit in thousands of dollars is given by the function, P(x) = 12x - 100, where x is the number of items sold in thousands, x ≥ 10. 1.describe the meaning of the number 12 in the formula, in terms of its meaning in relation to the profit.

261. World History

Can't figure these two out: 35. Rivalry among various sections of a country- ? 38. Bombings and assassinations of high officials by political groups- ? Thanks -MC

262. English

1. I took a shower so I felt refreshed. 2. I took a shower so that I felt refreshed. 3. I took a shower, so I felt refrewhed. (What does #1 mean, #2 or #3? In Sentence 1, there is no 'comma' before 'so.' In Sentence 1, we cannot see 'that' after 'so.')

263. Math

I am having a hard time understanding the difference between discrete and continuous data...i have read the textbook definition and i have looked online, and i just cannot comprehend it :( help?

264. Geometry

Richard is flying a kite. The kite string makes an angle 57 with the ground. If Richard is standing 100 feet from the point on the ground directly below the kite, find the length of the kite string.

265. algebra

what is this answer I am an even number i am less than 65,but greater than 50 I am divisible by 5

266. Math

I am confused with this problem, A 14.1 oz box of cereal costs \$2.89. Find the constant of direct variation I don't know how to figure out the constant of direct variation and i need help.

267. math

I need help with the math textbook stretching and Shrinking page 89, questions 33 and 34. THANK YOU TO WHOEVER HELPS ME :D

268. math

25 guests attended the first party. 33 guests attended the second party. What is the percentage increase in the number of guests from the first to second party?

If the reaction Cl2 (g) + O3 (g) = Cl2O (g) + O2 (g) occurred in just two steps, what would be the overall order of the reaction be? a. 1 b. 2 c. 3 d. 4 e. not possible to determine from the information given I chose 2 as the answer. Is this correct?

270. IUP

A Circular metal loop is 28.0 cm in diameter. how large a current must flow through this metal so that the magnetic field at its center is equal to the earths magnetic field of 5.00*10-5T?

271. algebra

Input 7, 8, 9, 10, 11 Output 18, ?, 25, ?, ? Can you help please Thanks

272. Physics

A roller coaster (491 kg) moves from A (1.09 m above the ground) to B (26.3 m above the ground). Two non-conservative forces are present: friction does -2.39 x 104 J of work on the car, and a chain mechanism does +5.18 x 104 J of work to help the car up a

273. English

Original sentence: The urgent care center offers a variety of services such as physician appointments, mental health, health education programs, and lab and X-ray work. My corrections: The urgent care center offers physician appointments, mental health

274. calculus

Determine the intervals on which f(x) is continuous f(x)=15sin(x^2+71)

275. homonyms

what is the homonym 4 urn

276. Calculus AB

Evaluate the indefinite integral of (ln(x))/(x + xln(x)) dx by using variable substitution. Show all steps of your work.

277. math

Stephen had 4 3/8 pizza at his party. If each person ate 1/8 of the pizza, how many people ate pizza at Stephens party?

278. algebra

(3x3-4x2 -x+6) Divide By (x-2) its 9three x cubed negative 4 xsquare -x+6) divide by (x-2)

279. social studies

can you recommend some websites that would be good to find out information on the peaceful transition of power (election of 1808), stronger federal government (federalist party belief in stronger government), foreign policy (waging the war of 1812), and

280. chem

how many liters hydrogen if you react 3.51 L of .97M hydrochloric acid with excess zinc?

-5z-2

282. logic application

You are playing Guess Your Card with three other players. Here is what you see: •Andy has the cards 1, 3, & 7 •Belle has the cards 3, 4, & 7 •Carol has the cards 4, 6, & 8 Andy draws the question card, “Do you see two or more players whose cards

283. trig

Expan each of the following using the compound-angle formulae:sin(x + 20degree)

284. English

ms. sue i wrote out this story i read in class in word document u please read it and help with questions? if only you not mind.

285. Math

Write an equation of the line with y-intercept 4 that is parallel to the line whose equation is y=3x+2

what does fiscal and monetary policies mean

287. Math

A scale drawing of a house is 15 cm high. If the drawing was built with a scale of 1 cm: 2.5ft, how high was the actual house

288. Algebra 2

What is each product or quotient in simplest form? a) √3(4√3) b)√x^3/3√x^2 c)√7(3√7)

289. ALGEBRA II

factor (2x^2 - 48)

290. Math

Express the following as a fraction with a single denominator: 1/(2a-3) - 2/(3-2a) + 18/(9-4a^2)

291. ALG2

x2 + bx + c and ax2 + bx + c could you factor this and explain it.

292. Math

undefined is what % of undefined?

293. math

What can 32 and 45 both be divided by?

294. Science help!

adding magenta and yellow dyes makes what color? At first i thought it was red. but when I realized we are adding dye's not light im thinking its black.. but im not sure! please help!

295. math/algebra

three fourths = seven tenths = two thirds = eleven twentieths = five eights = twenty one twenty five =

296. spelling

What kind of sentence can you make with the word " whose"?

297. Algebra 2

if one class had 20 students participating in the taste test and each student's rating is represented as ak, how do you write the formula for finding the mean rating using summation notation?

298. ALGEBRA II

George jogged downhill at 6mi/hr and then jogged back up at at 4mi/hr. If the total jogging time was 1.25 hours, how far did he jog in all?

299. english

after the had reached the museum is this a subordinate or and independent clause?

300. algebra 2

solve for x. |x+3.5|=2.5

301. chemistry

which of the following are non- polluting: renewable sources coal nuclear fuels or oil?

303. baseball

in baseball they have nine times entrances bases?

304. math 6th

8x10=80 90x5450

Dwayne eats 1/9 of the raisin bread. Francisco eats 1/3 of the raisin bread. Who eats more raisin bread?

306. Calculus-derivatives

f(x) = (x-1)^(2/3)*(x+3) What are the critical numbers? the derivative would be =2/3(x-1)^(-1/3)(x+3) + (x-1)^2/3 What do I do next?

307. strayer

You are playing Guess Your Card with three other players. Here is what you see: •Andy has the cards 1, 3, & 7 •Belle has the cards 3, 4, & 7 •Carol has the cards 4, 6, & 8 Andy draws the question card, “Do you see two or more players whose cards

308. algebra 2/math

how do i factor x^3+2x^2-x-2

309. chemistry 12 - gases

The molecular formula for this compound (14.37% H, density of 1.13 g/L at 24 C and 743 mmHg) is C_H_ I am not sure how to use this information

310. english

could you please tell me how to make use of will be in language use eg i will be there she will be a unique woman

311. Math

simplify 5^0 1 (5^2)^4 ---- * ---- / ----- 5^-6 5^-11 (5^10)^2

312. English

Here are the other sentences.Thank you. 1) She took on responsibility for the whole family.She forgot to turn down the gas and burned her dinner. 2) How many people turned up at your party? That child is bringing up food. She brought up three children

313. geometry b

find the area of a triangle with base of 5 and a height of 3 and 3/4

314. trig

Find the value of theta (in radians) corresponding to the point (6,-8)

315. Prob&stats

Search results for: Using numbers 1-20 what is probability a randomly chosen number is either an even number or a number greater than 14?

316. math

i need help doing these type problems.... example 3 1/3- 2 1/2=

317. math

valarie makes 2 pans of brownies for a bake sale. She cuts each pan into 12 brownies. She sell 15 brownies. What fractional part of a pan of brownies did valarie sell?

318. math

four more than a number is 12

319. Math

simplify the expression: 9-2x+10

320. English

1. Paul visited me in order to ask for a help. 2. Paul visited me in order to ask for help. (Which one is correct? Do we have to put 'a' before 'help' or not?)