Wednesday
August 27, 2014

Posts by Lala


Total # Posts: 310

science
a nickel is about 2 millimeters thick,or 2/1,000 of a metter. how many nanometers is?
September 20, 2010

science
i dont see it
September 20, 2010

Maths
A box with no top is to be built by taking a 6'' - by - 10'' sheet of cardboard and cutting x - in. squares out of each corner and folding up the sides. Find the value of x that maximizes the volume of the box.
September 19, 2010

math
I need real life example word problems using to ngative interjers.
August 31, 2010

Calculus
X2-7x-12/x-2
August 9, 2010

Individual Income
A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A
June 30, 2010

geometry
15
June 24, 2010

Calculus
What is the derivative and second derivative of 3x/(x^2-4)
June 22, 2010

Vectors
The point P(-1,0,1) is reflected in plane y-z=0 and has P' as its image. Determine the coordinated of point P'
June 20, 2010

dress making
For cutting dress fabric, it's recommended that you use
June 1, 2010

chemistry
How can one create an experiment that will deteremine the Ksp of a solid like Ca(OH)2
May 29, 2010

Chemistry
So far i have deltaH= 20g x 4.18 j/g deg C x 80 deg = 6.688KJ AND DELTA H= 1.11mol x 40.8 KJ/Mol = 45.3 kj but i dont know what to do next :(
April 27, 2010

Chemistry
If 55.0 kJ of heat are added to 20.0 g of water at 20oC, what is the final temperature of the system?
April 27, 2010

chemistry
A thimbleful of water at 100 deg C has a higher temp than a swimming pool full of water at 20 deg C, but the pool has more thermal energy than the thimble. Explain why this is possbile?
April 26, 2010

Chemistry
Some polymers are flexible when pulled one way but not another(example:milkbags). Can someone please explain why this happens?
April 19, 2010

calculus
Two roads intersect at an angle of 48º. A car and truck collide at the intersection, and then leave the scene of the accident. The car travels at 100 km h down one road, while the truck goes 80 km h down the other road. Fifteen minutes after the accident, a police ...
April 15, 2010

calculus
Three ships are at points P, Q, and R such that PQ=2km PR=7 km, and <QPR=142. What is the distance between Q and R, to two decimal places.
April 15, 2010

Calculus
A certain radioactive material decays exponetially. The percent, P, of the material left after t years is given by P(t)= 100(1.2)^-t a)Determine the half life of the substance
April 13, 2010

Calculus
How can i find the ln of both sides of the equation? 6=6e^3x and O.2= e^-kt
April 13, 2010

Calculus
How do i find the second derivative of f(x)= tan(1-x)^1/2
April 13, 2010

Calculus
How can i find f''(x) of the function f(x)= 2(cosx)(sec^2x)
April 11, 2010

Calculus
A fence is 1.5m high and is 1m from a wall. A ladder must start from the ground, touch the top of the fence, and rest somewhere on the wall. Calculate the minimun lenght of the ladder. I drew a diagram and i ended up with a right angle triangle. i made the hypotenuse the ...
April 10, 2010

physics
6. If you applied a force of 200N to push a box along the floor at a constant velocity, what is the net force on the box? What is the force of friction on the box?
April 4, 2010

physics
67-3 = 64 x 3.10 = 198
April 4, 2010

Calculus
How can i factor x^3 - 3x^2 + x -4? I tried the factor theorem method, but it doesnt work. Is there another method for factoring cubic equation? Is there a formula that one can use?
April 3, 2010

Calculus
When given only graph of f(x)(no equation), how can one graph f'(x) and f''(x)?
April 3, 2010

biology
a scientist finds no evidence that species in a community are competing and concludes that competition never played a role in the development of this community. is this conclusion valid?
March 29, 2010

biology
in a relationship that is an example of commensalism, would the species that is neither helped nor harmed evolve in response to the other species?
March 29, 2010

biology
in japan, native honeybees have evolved an effective defense strategy against giant Japanese hornets. imported European honeybees, however, are unable to defend themselves. explain this in terms of coevolution?
March 29, 2010

Chemistry
How does the molar mass of molecules affect the boiling points? e.g MOlar masses HI-->127.9 HF--->20.07 HCl---> 36.45 Boling points HI-->-35.55 HF---> 20 HCl--->-114.17 can it be said that except for HF molecule, as molar mass increases the boling points alos...
March 27, 2010

Chemistry
Are the intermolecular forces that are acting ont the molecule HF as follows: dipole-dipole, ionic and hydrogen bond
March 27, 2010

Math
Use synthetic division to divide. (4x3 + 26x2 + 10x - 12) ÷ (x + 6)
March 17, 2010

Math
Divide as indicated. (-2x5 - x3 + 4x2 + 58x - 20) ÷ (x2 - 5)
March 17, 2010

Chemistry
How does the process of chromium electroplating work?
March 9, 2010

Chemistry
How does the process of chromium electroplating work?
March 9, 2010

Calculus
4. Find the dimensions of the largest isosceles triangle having a perimeter of 18 cm. Answer ( all sides 6 cm) i really need help with coming up with the equation of the function before solving its derivative and making it equal zero so far i know 2x+y=18
March 9, 2010

French
Les visiteurs m'appellent un bebe. You made a mistake with the present third person of the verb appeler.
February 27, 2010

Calculus
How do i find the derivative of f(t)= 20- 30/rooot 9 + t^2 heres how i did it f'(x)= 20' - 30/root(9+t^2) ' = 0 - 30/root(9+t^2) ' (Quotient rule) f'(x)= 30' (root(9+t^2) - 30(root(9+t^2) ' f'(x)= -30(0.5(9+t^2)^-0.5) (2t) the answer at the back...
February 27, 2010

chemistry
a galvanic cell: A copper electrode is placed in a Cu(NO3)2 electrolyte. An iron electrode is placed in a Fe(NO3)3 electrolyte. a) What will happen to the voltage if sodium sulfide solution was added to the copper solution(I found that CuS(solid precipitate) will be formed, ...
February 21, 2010

chemistry
Why is it that an electrochemical cell(galvanic cell) cannot operate forever?
February 20, 2010

chemistry
How does the voltage of a galvanic cell change, when there is a precipitate in the solution?
February 20, 2010

Chemistry
TestubeA: KMnO4 + H2S04 + NaHSO3---->MnSO4+ K2SO4+Na2SO4 (colourless solution) a) if test tube a wasnt acidic enough, what colour might you expect in the products.
February 14, 2010

CHEMISTRY
reaction KMnO4+ EDTA(ethylenediaminetetraacetic acid) + MnSO4(s)---> MnCl3 (Violet/Rose solutions) note: Mn is being reduced. a) What is the catalyst in this reaction above? b)What is the role of EDTA in the reaction above
February 14, 2010

chemistry
Testtube B: Has a solution of KMnO4 + NaOH+ NaHSO3----> K2MnO4 (green coloured-solution)+H2O+Na2SO4 If too much HSO3^1- was added to this solution above, what would be the resulting colour and why
February 14, 2010

math
Well all u have to do is to get a calculator and divide 310000 by 9 310000DOLLAR/9PLP= 34444.44DOLLARS PER PERSON. So each person gets $3444.44
February 14, 2010

chemistry
defie le chatelier's principle and the role equilibrium plays in the reduction of stress
January 22, 2010

geometry
wtf
January 14, 2010

english
how is the way lady macbeth behaves in private to the way she behaves in public?
January 11, 2010

Literature
I said they symbolized people: sometimes rough on the outside, all beautiful on the inside, and unique.
December 9, 2009

Literature
Hey- I'm doing this question also. I think that what she is is passionate. She feels very strongly. She is also a little bit desperate. Hope this helps! p.s. how do you know she's talking to three children?
December 8, 2009

Literature
they are
December 4, 2009

chemistry
Write the complete balanced molecular, ionic,and net ionic equations for the reaction of nickle II chloride + sodium phosphate. Which product,if any, is a precipitate?
December 3, 2009

math
solve: x^2+2x-3=0
November 22, 2009

PERSONAL FINANCE
a SAVER HAS A $1000 ON DEPOSIT IN AN ACCOUNT EARNING 3 PERCENT INTEREST. dURING THIS YEAR THE INFLATION RATE WAS 5 PERCENT. AFTER ONE YEAR EHAT IS THE BUYING POWER OF THE AMOUNT IN SAVINGS FOR THAT PERSON?
November 16, 2009

math-pre al
your face
November 15, 2009

English
number one isn't right because it is two different tenses. yes, nuber 2 is right.
November 4, 2009

careers
bankers,CEO
November 4, 2009

Pigskin Geography
For numbers 13 and 14 on week 8 I cannot find how much larger houston is than buffalo and how much larger minneapolis is than Green Bay. Please Help!!! Thanks:)
November 1, 2009

Ms. Sue please help
Pigskin week seven interstates help please
October 24, 2009

Pigskin Geography
Does anyone know the interstates for week seven. Ithink its numbers 12-15 or something like that
October 24, 2009

Pigskin Geography
What are the Interstates for pigskin week seven. They are like the last problems and I can't find them anywhere.!!
October 24, 2009

Physics
3 MI/HR
October 24, 2009

Math
False. If x is positive and you put a negative in front of it, you have to divide by negative one which would then give you positive x again. If you multiply a positive x and a positive y then xy is positive. False. Hope that helps.!!!:)
October 24, 2009

eng
who is wulfings in beowulf
October 7, 2009

english
compare and contrast beowulf from batman
October 4, 2009

english 3
throughout the novel of the scarlet letter,what did weeds and poisonous plants symbolize?
September 30, 2009

11th grade
Write your own journal entry from the perspective of a member of Bradford's colony. What do you think of these unruly pirates? What shocks you the most about these surly characters? How do the manners of the pirates differ from yours?
September 22, 2009

english
fetter
September 8, 2009

english
perhaps the atlethes amoung them(relish) the additional exercise but i must (loathsome) the fact we do not have comfortable shuttles from the lot to campus
September 8, 2009

english
it is not exactly an(affliction) but seniors are forced to park quite far from campus. is affliction right
September 8, 2009

english
i already di just help me please!
September 8, 2009

english
can u help with the other two now?
September 8, 2009

GR.10 CIVICS!!!!!URGENT
CAN SOMOENE PLEASE GIVE ME A LINK TO A PICTURE THAT HAS TO DO WITH OR IS RELATED TO ABORIGINALS GAINING THE RIGHT TO VOTE IN CANADA(1960).PLEASE! ITS URGENT.THANKS
May 30, 2009

chemistry
THANK YOUUU!
March 31, 2009

chem
how about barium
March 16, 2009

chem
calculate the number of moles in 0.00655 g of antimony
March 16, 2009

Romeo and Juliet Summary
Could you please read my act 1 summary of Romeo and Juliet and if there are any changes needed please let me know. It doesn't matter if you don't remember the first act but as long as it sounds right to you. Thanks God Bless Sampson, and Gregory who are sevants to ...
March 16, 2009

Romeo and Juliet Help (24 hours and no response)
I posted questions yesterday and it's on the next page. Could you please check them and get back with me thanks.
March 13, 2009

Romeo and Juliet (Check answers pplz hurry)
Could you please check these answers from Act 1 (Review it's only 5 questions) 1.What warning does the Prince issue to the Capulets and Montagues? Answer: The Prince warns to the Capulet's and Montague's is if anyone fights they will be put to death. 2. What ...
March 12, 2009

arithmetic
83.6/4
March 11, 2009

Romeo and Juliet
Could you please help me with this thanks. In act 1 scene 5 Romeo and Juliet say speeches that form a sonnet. Could you give me a link that will give me a translation of what they are saying. Thanks for your time
March 11, 2009

math
a driveway is 162 feet long, 12 feet wide, and 6 inches deep. how may cubic yards of concrete will be required to lay the driveway? and pease explain answer
March 10, 2009

math
a rectangle has perimeter of 120cm a) write hte length of the rectalngle as a function of its width
January 13, 2009

math
what is the answer to 4/7 divided by 8/9 my teacher isnt very good at helping me
January 7, 2009

pre-algerbra
what is the simplest form 8/22 16/24,9/21/,20h/24h using product of prime factors.
January 3, 2009

4th grade English
Past tense :)
December 10, 2008

science
Post a 200- to 300-word response to the following: Discuss an environmental problem that you feel is significant in your town or city. What are some causes? Are any of these causes related to human values and environmental ethics? Explain I really need help is there any one ...
November 3, 2008

ENVIRONMENTAL SCIENCE
Thank you so much That website was really helpful.
November 3, 2008

ENVIRONMENTAL SCIENCE
Post your response to the following: Reflect on your own worldview and compare it with the worldviews presented in the text. Provide examples of the benefits of your view to defend your position. Please help!! If you can before thursday 11/6/08
November 3, 2008

call of the wild
A novel differs from a short story because it
August 19, 2008

Stats
help me
August 13, 2008

finance
because normally private placing are targets to the large insitution which are independent of the company,i just want to know whether the ordinary shareholder who bought quite few shares belonging to the third party and whether they are elibile for bid the private placing . ...
June 2, 2008

finance
In a private placings,the shares will be issued to the third party for raising capital of the company.Is the third party include or exclude any publics who bought 1 or 2 shares from secondary market.so is that possible for the ordninary publics like us to bid private placing?
June 2, 2008

math riddle ALGEBRA WITH PIZZAZZ
Did you hear about......
April 6, 2008

chem
Drbob222 is talking about face diagonal not body diagonal
February 18, 2008

chemistry lab
does anyone has the answer to this?
February 2, 2008

English
Number 4.
November 30, 2007

Language skills
A sentence with superfluous. Please help.
October 31, 2007

heat
A siler bar 0.125 meter long is subjected to a temperature change from 200 degrees celsius to 100 degrees celsius what willbe the length of the bar after the temperature change?
October 1, 2007

science
don't know
September 11, 2007

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