# Questions Asked onDecember 29, 2014

1. ## CAL-Help on dr/dt

A circular oil slick of uniform thickness is caused by a spill of 1 cubic meter of oil. The thickness of the oil is decreasing at the rate of 0.1 cm/hr as the slick spreads. (Note: 1 cm = 0.01 m.) At what rate is the radius of the slick increasing when the

2. ## Math

The twice–differentiable function f is defined for all real numbers and satisfies the following conditions: f(0)=3 f′(0)=5 f″(0)=7 a)The function g is given by g(x)=e^ax+f(x) for all real numbers, where a is a constant. Find g ′(0) and g ″(0) in

3. ## Improving Writing- REVISED VERSION

Assume that you’ve worked for the last five years as an administrative assistant for the Human Resources Department of Broadworth General Hospital. The Director of Human Resources, Miriam Hopkins, has charged you with organizing a two-hour training

4. ## Physics

Which of the following statements is true? A hypothesis always leads to a theory which leads to a law. A hypothesis always leads to a law which leads to a theory. A hypothesis must lead to a theory only. A hypothesis can lead to either a theory or a law.

5. ## Math

The edge of a cube was found to have a length of 50 cm with a possible error in measurement of 0.1 cm. Based on the measurement, you determine that the volume is 125,000 cm3. Use tangent line approximation to estimate the percentage error in volume.

6. ## PRE-CALC

If you put \$2,000 in a savings account that pays 6% interest compounded continuously, how much money will you have in your account in 4 years? Assume you make no additional deposits or withdrawals

7. ## Algebra 1

Suppose soda is on sale for .50 a can and you have a coupon for .80 off the total price. Write a function rule for the cost of n cans of soda. My answer is c(n() = .80n -.50

8. ## Physics

Hi! Would one of you please check my work? Thanks! ( I used significant digits, by the way) A student throws a 5.00 kg steel shot directly upwards so that it leaves his hand when it is 2.00 m above the ground. If its velocity is 0.15 m/s when it leaves his

9. ## chemistry

A gas storage tank has a small leak the pressure in the tank drops more quickly if the gas is hydrogen than oxygen. Why?

10. ## Math

Which of the following ordered pairs is a solution to the inequality y less than or equal to -2x + 8? a. (0, -4)

11. ## RE RE REVISED IMPROVING WRITING

Special note to my all time favorite: Writeacher: I am sorry that my changes seemed as if I did not read your first notations, I did and I admit I changed only a few words. I am sorry if you thought I ignored it and just re submitted it. I am a beginner in

12. ## sds chemisry

diffren between endotermic reactin and exotermic reaction

13. ## Algebra 1

Write an equation in point slope form for them line through the given point with the given slope. (-4,6) m= 3/4

14. ## Algebra 1

Write y=-3/5x-2 in standard form using Integers.

15. ## Algebra 2

A square has a length of x inches and a width of 2 inches less than the length. If the dimensions were doubled, what would be the area of the new square in terms of x? A.(2x-4)in^2 B.(8x-8)in^2 C.(2x^2-4x)in^2 D.(4x^2-8x)in^2

I have already researched five areas of publicly available information (such as the Dow Jones or top search engine results) that help to establish the health and public image of a company. How do I propose a web-based information system that will interface

17. ## Mathematics

Show that y=|x-3|is not differentiable at x=3

18. ## mathematics

a vertical pole stands on level ground. from a point on the ground, which is 15 meters away from the pole, the angle of elevation of its top is found to be 30 degrees.find the height of the pole?

19. ## General Chemistry!!!!

Hi I'm a high school teacher. I teach General Chemistry. I'm looking for a textbook for my student. In this course we learn the basics of chemistry and how it relates to our everyday lives/world.

20. ## calculus

A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x^2h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 4 cm, the edge length of the

21. ## calculus

A rectangular box has a square base with an edge length of x cm and a height of h cm. The volume of the box is given by V = x^2h cm^3. Find the rate at which the volume of the box is changing when the edge length of the base is 12 cm, the edge length of

22. ## Computer

Our professor wants us to get more likes on our facebook account. Can anyone tell how?

23. ## Calculus- Can you help me solve for dr/dt

How fast does the radius of a spherical soap bubble change when you blow air into it at the rate of 15 cubic centimeters per second? Our known rate is dv/dt , the change in volume with respect to time, which is 15 cubic centimeters per second. The rate we

24. ## algebra

The length of a shadow of a building is 50 ft. Also, tan P = 0.8. 1.Write an equation involving a trigonometric ratio that can be used to find the height x of the building. Explain why your equation is correct. 2.Find the height x of the building by using

25. ## Algebra

Hi there. Can "x^2 - 10x + 22 = -2" be solved by taking the square root? Can "4x^2 + 8x + 3 = 0" be solved by taking the square root? If so, please show me an explanation.

An inverted conical tank (with vertex down) is 14 feet across the top and 24 feet deep. If water is flowing in at a rate of 12 ft3/min, find the rate of change of the depth of the water when the water is 10 feet deep.

27. ## math

A board is 54 inches long. Mate cuts the board into 6 equal pieces. How long is each piece

28. ## CAL-Critical points

For the function F(x) = inx/x^2 , find the approximate location of the critical point in the interval (0, 5).

29. ## Water Treatment

Minimum oxygen concentration should be 7.6 mg/l, concentration in raw water is 0 mg/l and you can assume a saturation concentration of 10 mg/l. Calculate the total efficiency of oxygen addition, the number of cascade steps and the total height of the

30. ## World history

what freedoms were the people of Napoleon's day willing to sacrifice

31. ## Algebra 1

What is the simplified form of the expression? 7(63/(5 sq-2 sq)-1)

32. ## bu

What are the consequences for supply chain management of centralized and decentralized purchasing

33. ## bu

You are the Purchasing Manager reporting to the Managing Director of a company organized on a functional basis. Write a memo to the managing Director outlining the benefit of having regular meetings between the heads of design, marketing, production and

Which of the following is closer to a guess? hypothesis

35. ## Physics~ ONE MOREE

Which of the following must the investigator measure during an experiment? independent variable dependent variable

36. ## I guess this is physics related?

What is the biggest source of error in measuring the acceleration of a ball down a ramp? knowing the length of the ramp accurately measuring the time knowing the height of the ramp knowing the mass of the ball****

37. ## chemistry

what is the ph of a buffer made by mixing 2.00g of sodium acetate with 20.00ml of 1.20 mol/l acetic acid and adding enough water so the final volume of the mixture is 100.0 ml?

38. ## chemistry

a 2.00l buffer contains 1.00 mol HNO3 mixed with 1.00mol NaNO2 a. write the relevant ionization equation for this buffer. b. determine its pH c. determine the new pH if 1.00g of NaOH is added to the buffer.

39. ## geometry

Find the locus of a point which is equidistant from the origin and the point (-2,5)

40. ## american history

The puritan ______ became the governor of the Massachusetts bay colony A.roger Williams B.william bradfords C.john Winthrop D.Arnold hutchinson

41. ## science

Research suggests that American students lack a sufficient education in math and science to compete globally. How does the controversy about teaching evolution affect and reflect this problem?

42. ## Pre-Calculus

How do you solve the equation(800+x)tan33=xtan35?

43. ## Algebra 1

What would the graph look like for y= the absolute value of 2x plus 1

44. ## Precalculus

Could I solve (800+x)tan33=xtan35 like xtan33=(x/800)tan35?

45. ## Physics

The work W0 accelerates a car from 0 to 20 km/h. How much work (in terms of W0) is required to accelerate the car from 20 km/h to 100 km/h?

46. ## Algebra 1

Write the equation of a line that is perpendicular to the given line and that passes through the given points. y-2 = - 1/4(x+3), (-3,5)

47. ## Arts

What is the meaning of print media?

48. ## biology

Which phases are exactly the same for both the Cell Cycle and Meiosis? Can someone please help me with this and explain this to me? Thank you :)

49. ## Pre-Trig/Calc

Please help :) A potato is put into an oven that has been heated to 350F. Its temperature as a function of time is given by T(t) = a(1 - e-kt) + b. The potato was 50F when it was first put into the oven. What is the value of b in this context?

50. ## Algebra 1

Tell whether the lines for then pair of equations are parallel, perpendicular, or neither? y=-2/3x +1 2x-3y=-3

51. ## Arts

what is the function of product innovation???

52. ## Algebra 2

Janine is considering two movie rental plans. Plan A can be modeled with the equation C=3m and Plan B can be modeled with the equation C=2m+5 where C represents the cost in dollars and M represents the number of movies rented each month. Which statement

53. ## Arts

What is the function of a Digital Media??

54. ## Arts

what is the function of Animation ???

55. ## Algebra 1

How many solutions does the system of equations have? 3x+12y=20 y=-1/4x+5/3

56. ## english 4

What is shown on the tomb described by the speaker in “An Arundel Tomb

57. ## Algebra 2

Sarah has a job that pays \$45,500 per year with a guaranteed pay increase of \$2,000 each year for 10 years. What is the formula for Sarah’s salary, S, if she has worked x years? A. 45,500x+2000 B. 45,500x+2000x C. 45,500x+2,000(10) D. 45,500x+2,000(10)x

58. ## Math

∆ABChas vertices A(–1, –2), B(–4, –4), and C(–3, –5). Graph ∆ABC and its image after a reflection over the x-axis. Name the coordinates of the vertices of the reflected triangle...is it A(1,-2), B(3, -4), C(2,-5) or A(-1,2), B(-3,4),

59. ## algebra 2

find all zeroes -3x^4 + 27x^2 + 1200 =0

60. ## geography

What types and forms of caulking are available for insulating homes? please help i tried searching them up but each website had different info.

61. ## Life and world

I need a idea of an art work response to the contemporary world it can be war violence politics or anything else im not very creative please help

62. ## science

Name a way in which our government dictates the administration of vaccines to children

63. ## statistics

There were 50 men and 50 women who were randomly selected from a larger population. •A t-test was conducted to compare men and women’s performance on an assessment after eating chocolate. The results showed an independent t-test value of t .05(99) =

64. ## physic

A force paralled to an inclined plane is used to raise a load of 500N through a height of 3M While the load moves a distance of 30M along the plane (a) How much work is done on the load ? (b)if the efficency is 80% calculate the effort (c)how much work is

65. ## maths

A tank is half filled and contains 15litres.what fraction of the tank is full if it can contain 18litres?

66. ## ENGLISH

CHOOSE THE BARE INFINITIVE IN EACH SENTENCE. 1.make them feel the need to rise and give you a hand. 2.The judge noticed the witness nod his head with approval. 3.The coach saw his players look at one another with enthusiasm. 4.The teacher let her students

67. ## Mathematics

Find the differentiation of the following function a) y=5x^4(x-7)^1/2 b) y=(2(x)^1/2-(3))/(x)^1/2+1

68. ## math

Describe a situation this week when you used math to solve a problem involving data, graphs and statistics.