Questions Asked on
August 21, 2007

  1. Algebra

    I have some problems that I am having trouble with and I have some that need checking please. Thanks! Solve the equation. 4. (x+7/4)=2(x-1/6) Find all the value(s) of x that make thedenominator(s) zero. Then solve the equation. 6. (x-8/2x) +5= (x+6/x)

    asked by Soly
  2. extraction

    How to distingush organic layer and aqueous layer? The organic layer is the one on top. Most organic solvents are less dense than water. (NOte: Non-hydrocarbons such as chloroform, methylene chloride, carbon tetrachloride etc are more dense than water.)

    asked by bb
  3. algebra

    1)Write an equation for the parabola with focus (1,3)and vertex(0,3) answer= x= 1/4(y-3)^2 2)Write an equation for a circle if the endpoints of a diameter are at (1,1)and(1,-9) answer= (x-1)^2+(y+4)^2=25 3)Which is the equation of a circle with center

    asked by Marissa
  4. environmental science

    How does your footprint compare to the national average for Canada? Are you asking about an actual footprint? Or are you asking about your own environmental "footprint?" An environmental "footprint." How do you think your environmental footprint compares

    asked by Cho
  5. Chemistry

    Why does the addition of 50ml of 0.5M NaOH to 50mL of 0.6M KOH cause the pH to decrease (aka more acidic)? Because you have reduced the (OH^-) of the 0.6 M KOH by adding an equal volume of 0.5 M NaOH 50 mL x 0.6 M KOH = 30 millimols. pH = 13.78 Adding 50

    asked by Vic
  6. Spanish

    Hey all out there, I'm having trouble with Spanish 3 (not sure if the level is the same elsewhere) At the moment we are reviewing 'Los Commandos Mandatos" (when I say review, I mean that I've never learnt it when I should already know it). If anyone has

    asked by Krissy M.
  7. Art... Value

    Hello, In the following question, is answer #1, correct? I know that Value is the degree of lightness or darkness within a color. The more blue that exists in light the higher its color temperature, the more red contained in light the lower the color

    asked by Mandi
  8. electric engineering - bobpursley

    Hi bob: I have a follow up question fo my previous post under heading electrical engineering If you could help me that would be great! :-) see the other post which briefly explains the drawings here:

    asked by manny
  9. theology and religious studies

    http://www.jiskha.com/search/search.cgi?query=academic+study+of+the+bible+today Please see the first two links here for previous responses to this very question. Thanks. what is the relevance of the academic study of the bible today especially in the

    asked by Writeacher
  10. electric engineering

    First of all I need to let you know that I'm not an Engineering student. I'm just dabbling with it in a hobbie capacity. I recently wrapped 11 layers of 30gauge magnetic wire around a ball, approximatly 2" in diameter. Leaving a lead and starting from the

    asked by manny
  11. science?

    Why would a potato cook faster if you poke holes in it with a fork before microwaving it? ~My thinking is that it would increase the surface area..but this could be just partially why it cooks faster. Thank You =D I don't know in a microwave it cooks

    asked by ~christina~
  12. algebra

    4)Write the equation x^2-2x+y^2+4y=11 in standard form. answer= (x-1)^2+(y+2)^2=16 5)Write the equation 4x^2+24x-y+34=0 in standard form answer= y= 4(x-3)^2+2

    asked by Marissa
  13. World History

    It would be nice if someone could please help me find a good map of East Egypt near the Red Sea, this map needs to include the peninsula names, the river's names, the mountain's names, and the desert's name. that i can read.... thanks :] These don't have

    asked by Lynn
  14. World History

    ummm... I need another map but I need to see the mountains and rivers above the Mediterranean sea.... thank you soo much!!! :] "Above the Mediterranean Sea" includes Spain, France, Italy, Greece, and Turkey, all of which border the Mediterranean on the

    asked by Lynn
  15. Math Word Problem

    I asked my teacher, and my teacher said it had 3 shelves.. A bookcase is to be constructed. The height of the bookcase is 4 feet longer than the lenght of a shelf. If 20 feet of lumber is available for the entire unit (including the shelves, but NOT the

    asked by Vanessa
  16. Religions of the World

    Find 2 websites dealing with indigenous cultures/religions.Discuss how modern civilization has impacted the spiritual lives of the indigenous people you explored. Are indigenous religions still practiced today? If so, how have the practices changed over

    asked by Patricia
  17. math

    1)The area A of a triangle varies jointly as the lengths of its base b and height h. If A is 75 when b=15 and h=10,find A when b=8 and h=6 2)Determine the equation of any vertical asymtotes of the graph of f(x)=2x+3/x^2+2x-3 1) Area of a triangle is 1/2

    asked by Marissa
  18. Math

    uh oh if pencils cost 20 cents and pens cost 30 cents each find the cost of the following items number 36 has r pens and p pencils

    asked by Leo
  19. literature

    My question is in the story "young goodman brown", by Nathaniel Hawthorne. can someone give me an example of a literary device and how the author used it. I have to come up with at least nine of them but I can't start because i am not understanding. I

    asked by student
  20. english

    what is the "lord of the flies"? use a quote which helped you understand the term. Here is the source for the term "lord of the flies". "The title is said to be a reference to a line from King Lear - "As flies to wanton boys, are we to the gods, — They

    asked by Anonymous
  21. Algebra I

    Driving down a mountain, Tom finds that he has descended 1800 ft. in elevation by the time he is 3.25 mi horizontally away from the top of the mountain. Find the slope of his descent to the nearest hundredth. slope is descent divided by distance from base.

    asked by Sally
  22. Algebra I

    In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 itmes will cost $10,000 to produce and that 300 items will

    asked by Katie
  23. algebra

    What is the equation of an ellipse with a center (-4,2) and a horizonal major axis? I know the equation is x^2/a^2+y^2/b^2 and that's all. (Broken Link Removed) you will have to give more information. With only the centre (-4,2) all we can say is

    asked by Jon
  24. History

    . Describe the three key concerns that Washington had for the future of the U.S. Explain how the country has progresses in each area and give one specific example. Here's an answer I posted for this question a few days ago.

    asked by Kara
  25. math

    what is the place and value of the underlined digit in 803. the underlined digit is 3 It's in the one's place the way to think about it is like this: in between the ones and the tenths is the decimal point. Hundreds/tens/ones.tenths/hundreths

    asked by Brandon
  26. environmental science

    How should I write my notes. For what class? It depends on what class you are speaking of. Oh..ha..the post title. Okay.. For a science class you could write in outline form. This is not the only correct way to write your notes but it's how I organize

    asked by Cho
  27. environmental science

    I mean I know sort of what Im doing. Im doing this project on tropical rain forest. But this was are insrutions. (A)Descrition of the Biome (B)Location or locations where it is found (C)Climate and weather of the biome (D)Biodiversity found in the biome.

    asked by Cho
  28. environmental science

    What web site can I use to find the biodiversity of Tropical rainforest?=) Please help! Check these sites. http://www.rain-tree.com/facts.htm (Broken Link Removed) But what do I suppose to write about that? I don't understand./:| Click on those web sites

    asked by Cho
  29. Math

    2asqrt9a^3b - 3bsqrt20a^2b + 2a^2sqrt16ab Help?! 2,965,368 round this to the nearest hundred thousand. any suggestions? the hundred thousanth place is the 6 in the thousanths place. the number before that is 5. so 6 changes to 7 and the rest zero. like

    asked by Sarah
  30. Algebra

    Ann sells apples and Beth sells oranges. Today, half the number of apples than Ann sold was fifteen less than thrice as much the number of oranges that Beth sold. I just want it to know; how do I convert it into an algebraic expression or equation? Is

    asked by Joel
  31. math

    write the following as a rate in lowest terms $402 for 18 rolls of film To find the rate for one roll of film, divide $402 by 18.

    asked by Vince
  32. science

    what instrument is used to measure lenght answer is ten letters A meter stick can measure length.

    asked by shawn
  33. Algebra

    3(2+3-2(4-5)2-1)-3(2+4(4-2)-8+3(2-5)+1-2)1-3)+4-5 rather silly question, and some of it makes no sense eg look at the first part ......-2(4-5)2-1 does this end up -2(-1)(2) ? or did you forget an operator before the last 2? there is a similar discrepancy

    asked by Reiny
  34. SAT vocab

    Would you say that deprecate, disdain (as a verb), and denounce are synonyms? These I found at Keyword: Thesaurus... an excellent help in checking synonyms and antonyms. I would agree that those are synonyms Synonyms bad-mouth, belittle, cry down,

    asked by Hannah
  35. math

    3 to the 5th power / 3 to the 2nd power= ?? 22 24 23 26 27 2100 213 (3^5) / (3^2) = 27 3 to the 5th power is 3 x 3 x 3 x 3 x 3. ________________________________________ 3 to the 2nd power is 3 x 3. Cancel two of the 3s on the top and the bottom. What do

    asked by Rodger
  36. algebra

    4)Find the exact solutions of each system of equations x^2+y^2=25 and 9y=4x^2 answer= (3,4),(-3,4) This is correct from what I found after entering the functions into my TI-83 calculator and using the trace=> intersect function on the calculator.

    asked by Marissa
  37. math

    what is the value of the underlined number? 170- the 0 is underlined, I know the place is the tens, thanks so much! The VALUE of the underlined number is zero. The place is the ones. It's not the tens place...didn't you read what I posted before? The

    asked by Brandon
  38. world history

    What desert lies west of the Euphrates River and north of the Arabian Peninsula? Check this map for the name of the desert that lies in Iraq, Syria, and Jordan. http://www.lib.utexas.edu/maps/middle_east_and_asia/middle_east_ref04.jpg

    asked by lynn
  39. World History

    It would be nice if someone could please help me find a good map of East Egypt near the Red Sea, this map needs to include the peninsula names, the river's names, the mountain's names, and the desert's name. thank you so much =] These maps should help you.

    asked by lynn
  40. environmental science

    What do I suppose to write? I don't understand? /:| Please see my last post about biodiversity.

    asked by Cho
  41. Math

    Another crazy one... 3sqrt5y^5 divided by 6sqrt20xy For this 3 square root 5y^5 ___________________ 6 square root 20xy you can reduce the 3/6 to 1/2 then you can go and split up the bottom denominator of square root 20 into square root of 5y * square root

    asked by Sarah
  42. Biology

    Variables that are always different between the experimental and the control groups are? a.)independent b.) controlled c.) dependent d.) a and c

    asked by Henry
  43. Algebra

    A athlete runs 40 ft in 5 minutes. i have to find the rate help please per min... 40ft/5min= 8ft/min

    asked by MEL
  44. Science

    I have to do an assignment on designing an animal that has adapted to life in the waters of the dead sea. But nothing can live in the dead sea so I don't know what to do. Can anyone help with suggestions? What about a micro organism? There are bacteria

    asked by Mitchell
  45. science

    infinte use to find math two words seventenn letters for crossword puzzle

    asked by zoe