# Miley

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. ## 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.

3. ## 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

4. ## 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.

5. ## 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

6. ## 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:)

7. ## 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?

8. ## 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:)

9. ## chemistry

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

10. ## Science

Why is science always changing?

11. ## HELP

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

12. ## 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

13. ## Math

A line has x-intercept (5, 0) and is perpendicular to the line 2x + 8y = 10. Find the y-intercept of the line.

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. ## 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

16. ## chemistry

what is average kinetic energy?

17. ## 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

18. ## math

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

19. ## Math

If the point (x, y) is one-third of the way from (-2, 6) to (6,-8), then what is x + y? What is the x+y?

20. ## 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

21. ## Math simplifying mixed radicals

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

22. ## 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

23. ## 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

24. ## 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?

25. ## 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

26. ## 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

27. ## world history

I need help in s.s . can you please help me with a family tree ?? can you please show me a family tree of king Henry the viii . can you please show me his wifes and life in an actual tree with some pictures !!!!!!!!!!! please please !!!!!!! i am beging you

28. ## 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?

29. ## alg 2.

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

30. ## 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?

31. ## 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??

32. ## 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:)

33. ## 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??

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

35. ## 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:)

36. ## social studies

the treaty of versailles of 1919 ended whitch war

37. ## english

1. What type of organization does this comparison-and-contrast passage us? A Block B Point-by-point C Venn diagram D Chronological ---------------------------------------- Use the passage to answer the question. ---------------------------------------- 2.

38. ## 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

39. ## Maths

The third term of an arithmetic profession is 90 and the eleventh is 50.. what is the common difference?

40. ## 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

41. ## Economics

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

42. ## Math

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

43. ## 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

45. ## 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

46. ## 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.

48. ## 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.

49. ## Math quick help anyone

1. I'm given a slope of 1/4 and a set of 2 points each: p: (-12,6) & Q: (8,w) .find the value of w. what if the slope was -1/4, then what would the value of w be 2. What is the solution to these equations: 3x-2y-8=0 9x-6y-42=0 One solution, no solution or

50. ## 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

51. ## Math urgent help please!!

You have 500 cm² of material available to cover different shapes. what is the maximum volume of each object that you could make with this amount of material? A.) a cube B.) a sphere I've been stuck on this for so long, please show me how to do this step

53. ## Math quick question

You have 500 cm² of material available to cover different shapes. what is the maximum volume of each object that you could make with this amount of material? A.) a cube B.) a sphere I've been stuck on this for so long, please show me how to do this step

54. ## 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 :/

55. ## Math

Suppose that for any integer n, f(n)= (n-1). if n is even; f(n)= (2n). if n is odd. If k ∈ N, and f (f (f(k))) = 21, find the sum of the digits in k I really don't get this means. (∈)

56. ## Math

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

57. ## Math

How many solutions does the equation |2x − 2| = x have? Would it be 1

58. ## Math

f(x)=7x^3+13x^3-3x^2. Find f(-6) Also how do you solve this kind of question

59. ## Romeo and juliet 1 question

When do romeo and juliet meet and when do they die? I'm looking for the days , so I think they met on Sunday and died on Thursday but idk so please help:)

60. ## TO ANY MATH HELPERS

Pleeeese help! Use the substitution method to solve each linear system: -x+3y+1=0 3x-y+1=0 4x-3y=-13 -2x+y=4 Please help, thanks:):)!!!!

62. ## Math quick help

Oh man.... I don't understand how to simplify though... Can u please help me with These questions : 2 * square root 18 5* square root 48 3* square root 54

63. ## 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

64. ## Math simplifying mixed radicals

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

65. ## Chemistry

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

66. ## 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

67. ## 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?

68. ## 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

69. ## 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

70. ## Social Studies

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

71. ## Social Studies

These are multipal choice: According to the (Dawes Act,or Fort Laramie Treaty), Indians would receive money,domestic animals,tools,and land that would be theirs forever.

72. ## Social Studies

true or false: many cowhands on the cattle drives were chinese imigrants, african americans,or veterans of the confederate Army. I guessed false and instead of chinese imigrants, i think it's Vaqueros? but i don't know?

73. ## calculus

What is the first natural number that causes the statement 1 + 3 + 5 +... + (2n − 1) 4n − 1 to fail? 2 3 4 5 6

74. ## calculus

If Sn = 1 + 6 + 11 + 16 + 21 + 26...... where an = (5n − 4), what would be the mathematical expression represented by Sk + ak + 1?

75. ## 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

76. ## calculus

Need help asap! what is the limit as x approaches 0 of -x/tan(3x) ?

77. ## 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=

78. ## Science

Rocks exposed as glaciers melt absorbs more energy than it reflects TRUE or FALSE Please help me. This question is gonna be in my test tomorrow

79. ## 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!

80. ## Geography 7

Places where two rivers meet is caled what?

81. ## Geography 7

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

82. ## Math

2/3q + 5 = 3/4

84. ## 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)

85. ## Math

Which integer is 6 greater than -5. So what i have to do here?

86. ## Science

which is not a from of energy ? light temperature electricity heat

87. ## math

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

88. ## 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

89. ## 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.

90. ## 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?

91. ## 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?

92. ## 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

93. ## 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

94. ## 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?

95. ## 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

96. ## CALCULUS/DERIVATIVE

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

97. ## MATH/DERIVATVE

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

98. ## 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

99. ## 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.