Questions Asked on
July 11, 2007

  1. Math/Calculus

    A spring with a 4 kg mass has natural length 1 m and is maintained stretched to a length of 1.3 m by a force of 24.3 N. If the spring is compressed to a length of 0.8 m and then released with zero velocity, find the position of the mass at any time t. Here

    asked by COFFEE
  2. investments

    Assume the following daily closing for the Dow Jones Industrial Average: Day DJIA Day DJIA 1 12,010 7 12,220 2 12,100 8 12,130 3 12,165 9 12,250 4 12,080 10 12,315 5 12,070 11 12,240 6 12,150 12 12,310 a. calculate a four-day moving average for Days 4

    asked by lia82
  3. english

    can some body give me a example of a clause sentence Eric or Bear or whoever -- http://grammar.ccc.commnet.edu/grammar/clauses.htm If you have one independent clause, you also have a sentence if you punctuate it properly. If you have one dependent clause,

    asked by bear
  4. english

    when was the decleration of independence sign Check this site for your answer. http://bensguide.gpo.gov/6-8/documents/declaration/signers.html

    asked by bear
  5. Physics (urgent please)

    Using the approximation formula for the doppler shift, fo=fs(1+Vrel/c), one finds that a source is moving aways at 0.60c. What result would the exact formula yield for the recession speed? I have not idea how to figure this one out. Help please.

    asked by Gulzaman
  6. Math

    Margaret received $671.50 in cash as proceeds from a loan of $680.00 The discount rate was 10% simple interest. Find the discount period in months. Hummm. With simple interest, a rate of 10% on $680, in one month the balance would be 680*(1+(0.1/12)) =

    asked by Sabrina
  7. math 117

    A plane flies 720 mi against a steady 30 mi/h headwind and then returns to the same point with the wind. If the entire trip takes 10 h, what is the plane’s speed in still air?

    asked by Diana
  8. Algebra

    How can you tell if an equation is quadratic and not linear? Quadratic equations contain a term that is squared (such as x^2). Linear equations are of the form y = mx + b, where m and b are constants. the variable in a quadratic equation must be squared

    asked by Jess
  9. english

    can somebody please help me with this question . Is this statement logical? "Many people have said no one will ever travel to Mars. They're right! After all, we have never done it before Do you think it's logical and correct to assume that because "we've

    asked by eric
  10. Early Child Ed.

    Would you please check these questions and my answers, and see if my answers are the best possible choice? 1. A category specifically related to special needs in communication is: A. speech and language disability B. mental retardation C. emotional

    asked by Tamera
  11. biology

    I need to find a site for these: 1. microscopic images of plant mitosis. 2. microscopic images of animal mitosis. I went to http://www.google.com and clicked on Images before entering my search terms: plant mitosis --

    asked by klar maesen
  12. Managerial Economics

    What would it mean if an expansion path eventually had a negative slope? Like the letter U on its' side? EY And expansion path that looks like a letter U on its side (like a c or a backwards c?) Dont know. I think a graph of an expansion path would be time

    asked by Ed
  13. investments

    Assume the following daily closing for the Dow Jones Industrial Average: Day DJIA Day DJIA 1 12,010 7 12,220 2 12,100 8 12,130 3 12,165 9 12,250 4 12,080 10 12,315 5 12,070 11 12,240 6 12,150 12 12,310 a.

    asked by lia82
  14. math 117

    5/(x+6)+ 2/(x^2+7x+6)= 3/(x+1) Rewrite x^2 +7x +1 as (x+6)(x+1) Multiply both sides of the equation by that expression. You get 5(x+1) + 2 = 3(x+6) Multiply out the parentheses and combine similar terms. You will be left with a simple linear equation for

    asked by Diana
  15. maths

    how do i factorise this?: p^2+2p+1-t^2 thx. p^2 + 2p + 1 - t^2 = (p+1)^2 - t^2 This is the difference of two squares, so it can be rewritten =(p+1+t)(p+1-t)

    asked by Emma
  16. fohi

    From Dictionary.com: Dictionary.com Unabridged (v 1.1) - Cite This Source fal·la·cy /ˈfæləsi/ Pronunciation Key - Show Spelled Pronunciation[fal-uh-see] Pronunciation Key - Show IPA Pronunciation –noun, plural -cies. 1. a deceptive, misleading, or

    asked by Ms. Sue
  17. Math/Calculus

    Please take a look at my work below and provide a good critique: Solve the differential equation using the method of undetermined coefficients or variation of parameters. y'' - 3y' + 2y = sin(x) yc(x)= c1*e^2x+c2*e^x y"-3y'+2y=sin(x) r^2-3r+2=0

    asked by COFFEE
  18. math 117/algebra

    simplify comples fractions. w+3/4w-----w-3/2w it is w-3 over 4w over w-3 over 2w q/f divided by t/u is the same as q/f multiplied by u/t, or qu/ft Division is the reciprocal of multiplication. q/f divided by t/u is the same as q/f multiplied by u/t, or

    asked by Diana
  19. math 117

    If one half of one integer is subtracted from three fifths of the next consecutive integer, the difference is 3. What are the two integers? i got 24 and 25. (3/5 of 25) - (1/2 of 24) = 3 (n+1)*3/5 - 1/2 n =3 Right? I will be happy to critique your

    asked by Diana
  20. math

    If one half of one integer is subtracted from three fifths of the next consecutive integer, the difference is 3. What are the two integers? see other post.

    asked by Diana
  21. math 117

    A passenger train can travel 325 mi in the same time a freight train takes to travel 200 mi. If the speed of the passenger train is 25 mi/h faster than the speed of the freight train, find the speed of each. Speed = distance/time Therefore time =

    asked by Diana
  22. Maths

    solve the following pair of simultaneous equation: (x/a)+(y/b)=1 (x/b)+(y/a)=1 can someone help please?i have no idea how to solve it =( x/(ab) + y/b^2 = 1/b x/(ab) + y/a^2 = 1/a Subtract one from the other y(1/b^2 - 1/a^2) = 1/b - 1/a y(1/b + 1/a)(1/b -

    asked by Emma
  23. Grammar....Writing

    Hello, A clause in sentence 1 has been turned into a pharse in sentence 2. Is this correct? Thank You 1 Since she knew waht the lecture was about, she didn't attend the meeting. 2.Knowing what the leture as about, she didn't attend the meeting. Yes. Thank

    asked by Mandi
  24. english

    what is a fallacies You can always look up terminology at www.answers.com. Here's what you are looking for: http://www.answers.com/fallacy Here are some other helpful websites: http://en.wikipedia.org/wiki/Fallacy http://www.nizkor.org/features/fallacies/

    asked by eric
  25. english

    TOPIC:WRITE ANOTHER NAME FOR THE FOLLOWING: 1.WRITE 2.HARD 3.LAZY 4.ALLOW 5.STOP We will be happy to critique your work. This may help: http://www.onelook.com/ Are you looking for synonyms — words with similar meanings? If so, you might try an online or

    asked by gob
  26. english

    can somebody give me an example of a pronoun http://grammar.ccc.commnet.edu/grammar/pronouns1.htm Many examples are given here. =) thank you writeacher

    asked by eric
  27. Algebra

    take 1/2 of -5, and square it. Add that to both sides. y+6.25= x^2 -ax + 6.25 +3 y+3.25= (x-2.5)^2 Now, looking at it, wouldn't it by symmetrical abouut x=2.5? identify the axis of symmetry, create a suitable table of values y=x^2-5x+3

    asked by bobpursley
  28. Math

    I do not quite understand how to do this. COuld someone please help me? What values for x must be excluded in the following fraction? x+5/-1

    asked by Sandra
  29. Early Child Ed.

    Would someone also please check thse questions and my answers to make sure I have chosen the best possible answer? 1. A good example of people-first language is: A. "He has cerebral palsy." B. "She's a Down's baby." C. "This is a child with attention

    asked by Tamera
  30. math 117/algebra

    The combined resistance of two resistors R_(1 amd R_2 )in a parallel circuit is given by the formula R_(r= 1/(1/R_1 + 1/R_2 )) Simplify the formula. Help what is this talking about and how do I work it? find R as a function fo r`1 and r2. 1/R= 1/r1 + `1/R2

    asked by Diana
  31. math 117/ algebra

    Fungicides account for 1/10 of the pesticides used in the US. Insecticides account for 1/4 of all pesticides used in the US. The two ratio of herbicides to insecticides used in the US can be written 1/10 ÷ 1/4 . Write this ratio in simplest form. see the

    asked by Diana
  32. psychology

    I have a project due on citing sources summarizing concepts and theories can someone give me an wxample on how to do this please Citing sources for a psychology course? You'll be using the APA styleguide, no doubt. (Broken Link Removed) (Broken Link

    asked by LATUNJA JONES
  33. Math

    the lim [as x goes to infinity] (.25)^x =0?? Yes, the limit is zero. The more times you multiply a number by 0.25 (which is what is happening when x goes to infinity), the smaller is the result.

    asked by Jeff
  34. advanced english 2

    I need two metaphors, 1 personification and 1 allusion from "The Girl Who Loved Tom Gordon" by Stephen King Be sure to look up each term here: http://www.lausd.k12.ca.us/lausd/resources/Literary.Terms.Menu.html Then when you find what you believe are

    asked by Robin
  35. english

    Comparing the work habits of two people who have the same last name is an example of a faulty analogy. Their name tells us nothing about their abilities and ethics.

    asked by Ms. Sue
  36. Math

    I have the following problem to solve and I am not sure if I have the correct answer. Could you let me know if I do? 1/x+5+2=5/x+5 my answer: -3 your answer is incorretct ..it should be x=2 u just have to practice more often .. Combine like terms first by

    asked by Sandra
  37. ethics

    How do the unique relationship between human service organizations and the populations they serve impact ethical decisions? The goal of human services organizations is to help others. It's difficult to be unethical with such a goal. I suggest you check

    asked by Anonymous
  38. linear algebra

    If A is a nonsingular matrix, what is the null space of A? If A is nonsingular then the equation: A x = y has a unique solution. Now, the equation: A x = 0 always has a solution: x = 0. If A is nonsingular, then this must thus be the only solution. This

    asked by chris
  39. math 117

    Kevin earned $165 interest for 1 year on an investment of $1500. At the same rate, what amount of interest would be earned by an investment of $2500? At the same rate of interest, and period, the interest earned will be proprtional to the original

    asked by Diana
  40. history

    who was the 5th president of the u.s please help me Check this site. http://americanhistory.about.com/library/fastfacts/blffpres5.htm

    asked by eric
  41. math 117

    Ariana took 2 h longer to drive 360 mi on the first day of a trip than she took to drive 270 mi on the second day. If her speed was the same on both days, what was the driving time each day? Use the same method indicated in my response to your previous

    asked by Diana
  42. math 117

    x/(x-2)- (x+1)/x= 8/(x^2-2x) notice that x^2 - 2x factors to x(x-2), which are found as the denominators of the first two fractions. Multiply each term by x(x-2), the rest is easy.

    asked by Diana
  43. linear algebra

    Show that a subset W of a vector space V is a subspace of V if and only if the following condition holds: If u and v are any vectors in W and a and b are any scalars, then au + bv is in W.

    asked by chris
  44. math 117

    2/(5 )=(x-2)/20

    asked by Diana
  45. math 117

    x/6- x/8=1 Find a common denominator for the two x-terms on the left. Then do the subraction to get x/? = 1 You do the rest. These are not hard questions

    asked by Diana