# Questions Asked onJanuary 6, 2008

1. ## calculus

find the value of m so that the line y = mx divides the region enclosed by y = 2x-x^2 and the x-axis into two regions with equal area i know that the area enclosed by y=2x-x^2 is 4/3 so half of that would be 2/3 however, i have no idea how to find the

2. ## Chemistry

At STP 4 liters of O2 contains the same total number of molecules as 4 L of CO2? is that right? OR 8 L of HE, 1 L of NH3

3. ## algebra

The perimeter of a rectangle is 80x. The base is 7 times the height. In terms of x, what are the dimensions of the rectangle. What is the area? Thanks..

4. ## Chemistry

can anyone explain how does the balanced chemical equation show the law of conservation of mass?

5. ## US History

What were the three most signigicant consequences of the industrialization of the American economy after the Civil War? Explain your choices. I am having trouble coming up with three consequences. I need some ideas. Thanks

6. ## physics

a fan on a floating barge blows air at high speed toward the right. a)will the barge move? if so, what direction? explain. B) a sail is now put up on the barge so that the fan blows air towards the sail. will the barge move. if so, what direction? explain.

7. ## math

your cellular phone plan costs \$11 per month plus \$.12 per minute of phone usage.you want to pay no more then \$20 per month.What are the most number of minutes (m) that you can allow for phone calls each month?

8. ## math

3 sqrt(x) = 6 g(x) = 2x/3

9. ## english

what are some examples of courage in the novel night by elie wiesel and the film life is beautiful originally in italian, the examples in night are more needed! ty

10. ## Angles...

How do i express angles in a radian measure as multiples of pi. For example, suppose i have an angle of 30 degrees, and a angle of -270 degrees. How would I express them in a radian measure as a multiple of pi?. Thanks.

11. ## Science

Will somebody please tell me the following formulas: Nitrogen Water (H20) and carbon?? Thanks

12. ## math

If p,r, and s are three different prime numbers greater than 2 and n = p*r*s, how many positive factors, including 1 and n, does n have?

13. ## ap biology

Even though I know what random selection, directional selection, stabilizing selection, disruptive selection and sexual selection are I can not understant what does Starlings producing five eggs in each clutch has to do with it. In my final I got this

14. ## chimistry

in chimistry what is aq

15. ## chemistry

in chemistry what is aq

16. ## English

What is the importance of Dawn in the novel Dawn by Elie Wiesel? For a project theres a question- Describe the similarities and differences between Elisha and John Dawson's wait for dawn. I didn't catch it because I thought it was the morning what they

17. ## math

recall that the acceleartion due to earth's gravity is 32 ft/sec^2. from ground level, a projectile is fired straight upward with velocity 90 feet per second. a. what is its velocity after 3 seconds b. when does it hit the ground c. when it hits the

18. ## calculus

let x^2 + 4xy + y^2 + 3 = 0 are there any points on the curve where the tangent is horizontal or vertical? justify your answer.

19. ## Algebra 2

The problem simply is this: Evaluate: 12 5 -2 -3 0 1 -5 4 2 These figures are in matrix form. I don't understand what it is I am supposed to be evaluating.

20. ## Chemistry

Can someone help me balance this i tried and didn't succeeded. Fe2O3 + CO --> Fe + CO2

21. ## English

Hi, I am doing a independent novel study on "Roll of Thunder, Hear My Cry" By Mildred D. Taylor. But I am not sure how the title has anything to do with the book because i can't seem to make a connection between the two. Could you help me?

22. ## Government

Does anybody have any ideas as to where i can finde info about the Democrats and Republicans in the late 1800s, other that wikipedia?

23. ## calculus

calculate the indefinite integral 2sec^2x dx (cosx)/(sin^3x) dx calculate the definite integral interval pi/4, pi/12 csc2xcot2x dx

24. ## Algebra

how do you solve linear combinations?

25. ## english

What is the adverb in - On certain nights, I see stars everywhere. and The orbit of Uranus once puzzled astronomers.

26. ## calculus

given y = 4x-3 find the minimum value of xy. find the rate of change of xy with respect to x. find the rate of change of xy with respect to y.

27. ## Science

Which continent is now part of Eurasia but, according to theory, was originally a separate continent that moved northward into its present position?

28. ## Science

Why isn't the fit perfect if the continents were once part of Pangaea?

29. ## art history

which alphabet goes to which meaning? faux surface _ eclecticism _ concrete construction _ verism _ vesuvius _ aqueduct _ pantheon _ equestrian portrait _ a. dome for all gods b. honest way of making art c. 1st style wall painting d. 4th style wall

30. ## Science

If the continents were drawn on a Mercator map, would your chances of finding a fit have been improved? Explain.

31. ## HELP!

Scientists throrize that the continents are still drifting apart. What will be the eventual position of North America with respect to Eurasia?

32. ## omg!

If the continents were once connected, what might be similar about the coastlines where they were connected?

33. ## world history

who wrote the decleration of independence and who influinced?

34. ## Science

Aluminum foil is lying on the sidewalk in the sun for approx 1 hr. Put an ice cube from a drink and put it on the foil.... Which direction wll the heat energy flow from?

35. ## Social Studes

What events led to the founding of New York and New Jersey?

36. ## algebra

hi... i need help finding 2 equations that i would use for this elimination process.... this is what they gave me: * the sum of the digits i a two-digit is 14. If the 2 digits are reversed, the new number is 18 less than the original number. Find the

37. ## Pigskin Geography

What is the most arid and wettest cities in the U.S. (Football)?

38. ## algebra..urgent...

hi... i need help finding 2 equations that i would use for this elimination process.... this is what they gave me: * the sum of the digits i a two-digit is 14. If the 2 digits are reversed, the new number is 18 less than the original number. Find the

39. ## MATH

i really need help on this question!! I need to solve it using a system of two equations, the question says that an automobile radiator contains 16L of antifreeze and water. this mixture is 30%antifreeze. how much of this mixture should be drained and

40. ## science

I have to come up with a question that i can turn in to a experiment need help please

41. ## math

The sum of the digits of a two-digit number is 14. If the numbers are reversed, the new number is 18 less than the original number. Find the original number. I know Ana asked this question, but i don't understand how to get the equations.

42. ## algebra

the teacher accendentally reversed the digits if a test scored and shorted a student 36 points. SHe told the students that the sum of tha digits was 14. what was the actual score on the test? i need two equations

43. ## calculus

Integrate: dx/(2x^2 + 4x + 7)

44. ## math

mrs.wheelbarrow weasel is less than 100 years old.her year of birth is divisible by 23 and 17, as well as by one other prime number less than 30.when was mrs.wheelbarrow weasel born?if she was still alive,how old would she be this year?(2007)

45. ## quick french Q

is this sentence grammatically correct: "nous avons parlé beaucoup de français?"

46. ## math

Hi! I am trying to solve an order of operation question would you please check my answer... 36+9/3*5 I soved it to equal 51 9/3=3 3*5=15 36+15=51 Thanks for your help!!

47. ## metric conversion

43.3mm= ______dm how do you solve this equation?

48. ## Algebra II

Use two ordered pairs to write a prediction equation. Then using your prediction equation to predict the number of comic books sold when the price is \$4.50. The table is as follows: Price-\$2.00 # sold was 16 -\$2.50 13 -\$2.75 12 -\$3.00 10 -\$3.50 7 I used

49. ## Coterminal Angles

I need help with this.. it's for my midterm review. My midterm is next week. I would appreciate the help. Determine two coterminal angles (one positive and one negative) for each angle. The answer must be in degrees. a) 36 degrees b) -120 degrees c) 300

50. ## Intro to Chemistry

A substance X has the density of 0.359 g/mL at room temperature. What is the volume in mL of 25.0 g of the substance? Show calculation. -------------------------------------- I tried to cross multiply but I dunno...I'm getting some pretty crazy numbers.

51. ## Biology

Can anyone help me with the differences and similarities between cellular respiration and fermentation? I know one similarity is that both use the process of glycolysis. And NAD+ is recycled through both processes. Can anyone help me with some more?

52. ## biology

okay im totally lost here, the question i need to answer is explain why codons can't consist of two bases instead of three for each amino acid. im so confused..help!

53. ## english

what was the biggest suprise or dissapointment in the book wings by julie gonzalez?

54. ## Trigonometric Functions

Determine the Value of all six trigonometric functions of theta when given? I need help. This is for my midterm review, if anyone is willing to help, I'd appreciate it. a) sin theta= 3/5 and theta is in quadrant 1. b) tan theta= -2 and theta is in quadrant

55. ## Science

Will somebody please tell me the nitrogen,H20, and carbon formulas???? Thanks!

56. ## Chem

H2SO4+B(OH)3=B2(SO4)3+H2O