MILEY

Most popular questions and responses by MILEY
1. math/calculus

an electric current I , in amps is given by: I= cos(wt) + sqrt of 3 sin(wt) where w is positive constant. what are the max and minimum values of I? *please be specific

2. chemistry

how many grams of Fe2O3 are formed when 16.7g of Fe reacts completely with oxygen. 4Fe +3O2 --> 2Fe2O3 how do i do this problem..thanks:)

3. Math

Gina works at a diner. She earns \$6 each hour plus tips. In one week, she worked 37 hours a week and earned \$43 in tips. How much did she make altogether? Write an equation. Use a variable for the unknown. Solve

Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root and the numbers infront of the square root are supposed to be multiplied. 2

5. CALCULUS

A ruptured oil tanker causes a circular oil slick on the surface of the ocean. When its radius is 150 meters, the radius of the slick is expanding at 0.1 m/min, and its thickness is .02 m. At that moment: a. How fast is the area of the slick expanding? b.

6. alg 2

Given the following functions, perform the indicated operation and state the domain. f(x) * g(x) 3X^1/2*6X^1/3. I got 18X^5/6. But without using a calculator how do i find the domain?????? Thanks:)

7. chemistry

A solution is prepared by dissolving 17.1grams of sucrose, c12h22o11, in 275grams of h20. a)what is the molar mass of sucrose? How would i do that??

8. math/calc

The hypotenuse of a right triangle has one end at the origin and one end on the curve y+x^2e^(-3x), with x > or = 0. One of the other two sides is on the x-asis, the other side is parallel to the y-axis. Find the maximum area of such a triangle. At what

9. Math

Which of the following is a measure of an obtuse angle? A. 40 degrees B. 100 degrees C. 90 degrees*** D. 180 degrees I am most certain it is C?

10. CALCULUS

A gas station stands at the intersection of a north-south road and an east-west road. A police car is traveling towards the gas station from the east, chasing a stolen truck which is traveling north away from the gas station. The speed of the police car is

11. chemistry

10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i

10.0 grams of carbon dioxide and 20.0 grams of oxygen are mixed in a 50.0 L container at 30.0 degrees celcius. What is the pressure of this mixture in mm Hg? I defined my variables. so i had Mass=30.0g Volume=50.0L Temperature=303 Kelvin pressure=x. then i

13. HELPPPPPP

a box with a volume of 22.4 L CONTAINS 1.0 mol of nitrogen and 2.0 mol of hydrogen at zero degrees celcius. Which of the flollowing statements is true? the correct statement is the partial pressure of N2 is 101kPa. How come??

14. accounting

1-On May 1, 2012, Pinkley Company sells office furniture for \$150,000 cash. The office furniture originally cost \$375,000 when purchased on January 1, 2005. Depreciation is recorded by the straight-line method over 10 years with a salvage value of \$37,500.

15. chemistry

Give the pH of a solution containing 0.344 g of HCL in 792 mL of water. I did .344g/36.5g= .009 mols. then i times that by .792 because i changed that from ml to liters. is that right?

16. Chemistry

At a deep-sea station that iss 200. m below the surface of the Pacific Ocean, workeres live in a highly pressurized enviornmetn. how many liters of gas at STP must be compressed on the surface to fill the underwater enviorment wiht 2.00*10^7 L of gast a

17. Math

the ferris wheel at a carnival has a diameter of 18 m and descends to 2m above the ground at its lowest point. Assume that a rider enters a car at this point and rides the wheel for two revolutions

18. Science

How do I show my calculations in the results section of the lab report? The lab is about waters equilibrium temperature and I have several repeated calculations, for example, the margin of error is calculated more than four times. My teacher said to put

19. physical science

how much heat must be added to 1.0 kg of water at 100 degrees Celsius to convert it to steam at 100 degrees Celsius? i know that normally when the temperatures are the same, the heat added is zero, but i think that in this case i need to do something

20. Languages

Does anyone know of an online tutoring website to learn either french or scottish gaelic? Not like a live program, just some pages

21. Chemistry :)

Cr2O3 + 3CCl4 ---> 2CrCl3 + 3CCl2O In one experiment, 6.37 grams of Cr2O3 was treated wiht excess CCl4 and yielded 8.75 grams of CrCl3. What was the percent yeild? I have no idea how to do this. I know that percent yield is actual/theorectical yield *100.

22. chemistry

What is the maximum number of grams of PH3 that can be formed when 6.2 grams of phosphorus reacts with 4.0 grams of hydrogen to form PH3? P4+6H2-->4PH3. how do i do this question

23. chemistry

how many grams of calcium oxide are needed to produce 36.0 g of Hg. 4HgS +4CaO--> 4Hg +3CaS + CaSO4.

24. chemistry

Identify the limiting reagent and the volume of product formed with 11L CS2 reacts with 18L O2 to prduce CO2 gas and SO2 gas. CS2+3O2-->CO2+2SO2

25. chemistry

A solution is prepared by dissolving 17.1grams of sucrose, c12h22o11, in 275grams of h20. what is the molality of that solution? how would i do this???

26. chemistry

Hydrogen gas is produced when zinc reacts with hydrochloric acid. if the actual yeild of this reaction is 85%, how many grams of zinc are needed to produce 112L of H2 at STP?

27. chemistry

how many liters of oxygen are required to react completely with 3.6 liters of hydrogen to form water? how do i do this problem... thanks:)

28. Chemistry!!

how would i do this problem?? Given this equation: 2SO2(g) + O2(g) ---> 2SO3(g) If 50.0 grams of S02 react, what is delta H for the reaction?? how would i do that??

29. Chemistry

Samples of neon and helim are placed into separate containers connected by a pniched rubber tube as shown. When the clamp is removed and the gases are allowed to mix, what is the final pressure of the neon? The volume of the tube is negligible. 5.00L, 654

30. Physics

A projectile is fired with an initial velocity of v0 feet per second. The projectile can be pictured as being fired from the origin into the first quadrant, making an angle O with the positive x-axis. If there is no air resistance, then at t seconds the

31. Calculus

-e^[(-(x-a)^2)/b] b>0; local max at x=7 and points of inflection are x=5 and x=9. Find the formula... y=

32. Chemistry :)

Question: C25H52(s) + 38O2(g)----> 25CO2(g) + 26H2O How many liters of carbon dioxide are made when 23.4 grams of paraffin (C25H52)burns? I got 13,000 for my answer. Is that right?? Thanks:)

33. Math

A farmer has ducks and cows they have 22 heads and 56 legs how much of each animal? I really don't get this :/

34. Calculus

4. A gas station stands at the intersection of a north-south road and an east-west road. A police car is traveling towards the gas station from the east, chasing a stolen truck which is traveling north away from the gas station. The speed of the police car

35. MATH-CALC

3.A ruptured oil tanker causes a circular oil slick on the surface of the ocean. When its radius is 150 meters, the radius of the slick is expanding at 0.1 m/min, and its thickness is .02 m. At that moment: a. How fast is the area of the slick expanding?

36. algerbra 2

you deposit 10,000 dollars in an account that pays 4.25% interest compouned continuously. How long will it take for the account balance to reach \$15,000? i have \$15,000=\$10,000e^(.0425)(t). is that right? if not please can i get a reasoning if it's wrong,

37. chemistry

A solution is prepared by dissolving 17.1grams of sucrose, c12h22o11, in 275grams of h20. what is the molality of that solution? I know what formula to use, but can someone please show me all the steps to get the answer. Thanks:)

38. math

In which quadrant does the point (-18, 18) lie

39. Science

Why is science always changing?

40. math/algebra

what is the fibonacci sequence???

41. chemistry

A solution is prepared by dissolving 17.1grams of sucrose, c12h22o11, in 275grams of h20. a)what is the molar mass of sucrose? I know the formula to use, but can someone show me how do to it, by actually plugging in the numbers.

Please help me simplify these following mixed radicals:: and show me how you did it cause I need to learn : I don't know how to type a square root sign so I just wrote square root: 2 square root 48 3 square root 81 6 square root 12 3 square root 32 2

43. englsihh 2

Which propaganda technique is used in this sentence? Pure, fresh, real apple juice, packaged to deliver the freshness of nature straight to you. A snob appeal B transfer C bandwagon D glittering generalities

44. science

A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?

45. Chemistry

A 3.5 liter gas sample at 20 degrees celcius and a pressure of 650 mm Hg is allowed to expand to a volume of 8570mL. The final pressure of the gas is 0.60 atm. What is the final temeperature of the gas in degrees celcius. Can anyone please show me the

46. Math

2x^2+9x-5 is the area of a rectangle and one side of the rectangle is x+5, What is the other side of the rectangle? A volume of a cube is 15625cm cubed. What is the length from point A to B in the cube? Point A is on the front bottom right corner and point

47. calculus

a closed box has a fixed surface area A and a suqare base wide side X a) find the formula for its volume, v, as a function x b) sketch the graph of v against x c) find the max value of V

48. vocabulary-sentences

hi. i need two sentences...one for the word propulsion and one for the word repulse.

49. Discrete Mathematics

Please help. Consider a deck of 52 playing cards, in how many ways can you draw an ace card, any heart card and a queen card in three draws respectively with replacement?

50. calc

a math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the

51. MATH/ CALCULUS PIPELINE

A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined.

52. Small question memorizing help

I'm having trouble memorizing my French vocabulary, so I decided to record my voice saying all the words and their meanings and then playing them over on my headphones. Is this is a good way of memorizing, will it help? Or can u give me other suggestions.

53. Chemistry

Convert 6.42x10^23 atoms a pure substance to moles of that substance. That is all it says. Please help. Thank you.

54. calculus optimization

a company manufactures large cylindrical drums.the bottom and sides are made from a metal that costs \$4.00 a square foot, while the reinforced lid costs \$6.00 a square foot. ind thedmensions ofa drm that hasa volume of 10cubic feet and minizes the total

55. math/calc

The hypotenuse of a right triangle has one end at the origin and one end on the curve y+x^2e^(-3x), with x > or = 0. One of the other two sides is on the x-asis, the other side is parallel to the y-axis. Find the maximum area of such a triangle. At what

57. alg 2.

when condensing this expression why is the answer ln5. ln25-ln5

58. am history

What are some causes of the tet offensive. I know the tet offensive was when north vietnam and vietkong bombed 100 cities in south vietnam. but what are some causes of it?

59. English

I have a big long paragraph with a bunch of dialogue in it. Can anyone explain to me how to put the dialouge in paragraphs? thanks:)

60. Math

Jane collected 53 dollar notes for the competition of which x are \$2 notes and y is \$10 notes. The total value of the dollar notes is \$394. Form 2 equations in terms of x and y. Solve the equations and hence find the number of \$2 notes

61. Social Studies

What was the purpose of the Homstead Act? Did congress achieve this goal? I got what the homstead act was, but i'm confused on the second part. I put that congress did not achieve there goal because only about 20% of the homstead land went directly to

62. Math7

Yuki made cookies on Monday. Some friends came over and ate half the cookies on Tuesday. On wednesday,Yuki ate three cookies, and on Thursday, she took two cookies to school. By Friday, Yuki had seven cookies left. How many did she bake on Monday? Please i

63. math

a room at the hamilton inn costs 104 dollars per night for two people there is a 19 dollar charge for an extra person write an algebric expression thaat shows the cost oper night for a family of four staying at the inn

64. science

A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?

65. caculus (pipeline)

A common problem encountered by the oil industry is to determine the most cost-effective route to connect various wells in an oil fertile area. The attached map is a copy of a section of a U.S. Geographical Survey contour map with a wetland area outlined.

66. social studies

What strange tade took place in North and West Africa?

67. chemistry

what is the maximum amoutn of KCL that can dissolve in 200 gram of water? ( solubility of KCL is 34 grams/100 gram H2O at 20 celsius

68. alg 2.

solve. we can use a calculator on this part... 2e^-x+4=21. how do i do this problem. i know that you subtract 4, but what do you do after that?

69. ATTENTION WRITEACHER!

Thanks so much for your help on my english question. I posted a reply with another question down below. You're REALLY smart so can you please check my work that i put donw below! thanks again, i really appreciate it:)

70. Alg. 2

I know how to graph polynomial functions, but i'm having a hard time getting the second point on this one. f(x)=x(x-1)(x+2)(x+2). I graphed my zeros and made the right arrow go up and the left arrow go down. I plotted my first point by pluggin in -1. My

71. Math

f(x)=13x^2 -15x-14 g(x)=15x^3+14x^2-15x+12 find f(3) × f(10) + f(-7) × g(9)

72. Math 1 quick question

Instead of doing all that work to simplify the mixed radical , can I just change the mixed radical into an entire radical? Ex: 2* square root 18 into square root of 72

73. Math

2/3q + 5 = 3/4

74. Language

Compound words are two words that have been joined together to create a new word. The new word is related to both the smaller words. a) back/fore/under +_______ b) bank/cook/text + _______ c) blue/goose/straw + ______ d) day/flash/high + _________ e)

75. Math

The area of a circular swimming pool is 225pi square meters. What is the circumference of the swimming pool? Leave your answer in terms of pi.

76. science

A 60.0 kg skier rides a 2710 m long lift to the top of a mountain. The lift makes an angle of 14.5° with the horizontal. What is the change in the skier's gravitational potential energy?

77. math

a math professor is thrown off the matthews bridges, height 240ft, by a disgruntled calculus class with an intitial upward velocity of 10ft/s a) assumign the acceleration dude to gravity is -32ft/s^2,find the macimum height of the professor. b) find the

78. social studies

do i have to do all my homework its so hard! i hate this! i hate this subject!

79. Math

resolve the following exponential equation 3 ^ (x + 4) = 5 ^ (x + 2)

80. math

parabola with vertex at (3,-2) and a directreix of x=2. how do i wrtie this as an equation....PLEASE HELPPPPPPPP

81. chemistry

A solution is made by dilution 400.mL of 2.0 M HCL to a final volume of 1000. mL. what is the pH of this solution? i'm stuck on this question i have no idea what to do, can anyone help? thanks:)

82. Chemistry!!

A serving of potato chips is crushed and burned in a clorimeter. the calorimeter has 2000 grams of water in it and the initail temperature is 21.0 degrees celsius. If the water's temperature increases to 29.0 degrees celsius, how many calories

83. english

What would the novel A Separate peace be like if Finny narrated the story?

85. Social Studies

I need help on these problems: 1.This water rising device cosists a simple leaver. 2.Which Egyptain word decribes the word Red Land, the desert 3.This Egyptaion god is represented by the Niles croc. 4.Blank is one of the world's oldest civilation and Busch

86. Economics

What are the costs and consequences of providing the subsidies and welfare?

87. Math

Determine the solution of the equetion: 2cos x-1=0? 2cos x=0? and 2cos x+1=0?

88. VERY SMALL QUESTION

I'm having trouble memorizing my French vocabulary, so I decided to record my voice saying all the words and their meanings and then playing them over on my headphones. Is this is a good way of memorizing, will it help? Or can u give me other suggestions.

89. Math

need to describe 3 different problem solving approaches to this problem, one I think is algebra, but don't know how to solve, and i need to say how to solve each one in each different way, please help with this. aaron is thinking of a number, if its

90. HELP

could i please get help with my project please? also what does this mean: a linear function with a discrete domain?

91. Math Project Gr 5/6

Hi im from BC and im doing a mini project on topic grade 5 and 6 math curriculum topics, please give me any links to sites where i can find information on thank you, and i don't exactly know what kind of info to add, so need help with that. like what

92. To: Jai

Instead of doing all that work to simplify the mixed radical , can I just change the mixed radical into an entire radical? Ex: 2* square root 18 into square root of 72

93. Physics

liter of biodiesel requires 5-7 kilograms of coffee grounds, how many pounds of coffee will be needed to fill up a 10 gallon (40 liter) car engine? (1 kilogram = 2.2 pounds

94. Social Studies

These are mulitpal choice: Reforms failed because Indians did not want to become (farmers, or miners) and reservation life changed their culture.

95. Math

a) Subtract -6 Find the opposite Add -2 Subtract -4 Find the opposite The answer is -5 The original integer is_____ b) Add +14 Add -5 Find the opposite Subtract +6 Add +3 The answer is 0 The original integer is ____ I need help. Thank you!

96. Geography 7

I have a question about geography " What does TREC sound for?" THANK YOU!

97. math

using the expression you created above calculate the cost of the same family of four staying at the inn for 3 nights

98. CALCULUS/DERIVATIVE

C(X)= 2.7X +4.7 SQRT OF [400^2 + (780-X)^2]

99. CALC (TANGENT LINE)

1-show that 1-x/2 is the tangent line approximation to 1/ sqrt of 1+x near x=0 2-what is the local linearization of e^x^2 near x=1 3-find the tnagent line approximation of 1/x near x=1