Thursday
October 2, 2014

Posts by jimmy


Total # Posts: 386

Math
a person cleared a rectangular plot of land and covered it with gravel. then he got 9 square wooden sections of side lengths: 2,5,7,9,16,25,33 and 36. by placing the squares on the gravel with no two overlaping, the person built a patio which exactly covered the graveled ...
December 16, 2010

organic chwmistry
When bromobenzene reacts with propene in a Heck reaction, two constitutional isomers are obtained as a product. Give the structures of the two
December 8, 2010

Physics
An Olympic swimming pool is heated and maintained at 30 °C in the winter. It has a volume of 2500 m3, a length of 50 m, and a width of 25 m. During a storm, the pool receives 1 cm of rain over its surface area. If the rain is 15 °C, what will the temperature of the ...
December 5, 2010

Physics
A 1.00-kg beaker containing 2.0 kg of oil (density = 916 kg/m3) rests on a scale. A 2.00-kg block of iron is suspended from a spring scale and is completely submerged in the oil. Find the equilibrium readings of both scales. I was able to find the equilibrium reading for the ...
December 3, 2010

Computer Programing & Logic Design
.A program that accepts candy data continuously until a sentinel value is entered and displays a list of high-priced, best-selling items. High-priced items are those that sell for $10 per pound or more.
November 20, 2010

Math
1. Determine the vertex of the parabola: y= 7x^2+14x+6 2. For the following 2 functions,identify the horizontal and vertical asymptotes. a)f(x)= 3x(x-2)/x(x-1) b)g(x)= x/(x+7)^2
October 31, 2010

college math
the Laplace transform of e^4t(cos 2t)?? please i need help. thanks
October 27, 2010

Math
The Lappans buy 3 large sandwich wraps to serve at a picnic. 9 people in all will be at the picnic. Show 3 different ways to cut the sandwiches so that each person gets an equal share.
October 18, 2010

Math
3 neighbors are sharing a rectangular strip of land for a garden. They divide the land into 24 equal sized pieces. What fraction of the land does each person get if they share it equally? Write the answer in more than one way.
October 18, 2010

Math
The Lappans buy 3 large sandwich wraps to serve at a picnic. 9 people in all will be at the picnic. Show 3 different ways to cut the sandwiches so that each person gets an equal share.
October 18, 2010

stats
Microbes in a certain colony exposed to radiation have a 1/6 chance of being mutated. a. If ten microbes from the colony are sampled, what is the probability that exactly 4 will be mutated? b. If ten microbes from the colony are sampled, what is the probability that at most 4 ...
October 16, 2010

chemistry honors
how many grams of a stock solution that is 85% H2SO4 by mass would be needed to make 150 grams of a 45.0 percent solution?
September 30, 2010

Math
Can the rations 2/18 and 5/45 make a proportion?
August 9, 2010

algebra
use intrcepts to graph the equation x + 4y = 8
July 8, 2010

algebra
solve te compound inequality 6 > -5x + 5 or 9 < - 3x + 4
July 8, 2010

algebra
Find the indicated outputs for f(x) = 2x(2) - 2x f(0), f(1), f(2)
July 5, 2010

english
Alright thankyou, is there anymore you can find?
July 5, 2010

english
I need to find rhetorical devices in this speech. -- Pearson’s address on the inauguration of the national flag of Canada: On September 5, 1945 an Order-in-Council was passed declaring the Red Ensign to be Canada's National Flag pending a decision of the Parliament of...
July 5, 2010

calculus
I need help understanding how the series of e derives into the exponential series using the binomial theorem. Here is a link to a pic of a page in my book, regarding the exponential series: ht tp://i46.tiny pic(.)(com)/qz0oat . jpg (remove parentheses and spaces) A couple of ...
June 5, 2010

calculus
How can the graph of f(x)=1/2(x+10)^2-2 be obtained from the graph of y=x^2
May 22, 2010

calculus
How can the graph of f(x)=1/2(x+10)^2-2 be obtained from the graph of y=x^2
May 22, 2010

chemistry
a sample of gas is collected over water at a temperature of 35 degrees celcius when the barometric pressure reading is 742.0 torr what is the partial pressure of the dry gas?
May 18, 2010

algebra
1. On three consecutive passes, a football team gains 5 yards, loss 18, and gain 50 yards. What number represents the total net yardage? The total net yardage is 2. -4<=3x-3<=-2 The solution is xl _ <=x<=_? 3. -5<x<=6 What would this answer look like on a ...
April 26, 2010

math
5+5+1+1 4+4+2+2
April 23, 2010

English
PLEASE HELP ME WITH THIS!!! GIVE ME A WEB LINK OR SOMETHING GOOD!!! what is being stated in the last long stanza (the third one) of the lyric "If I Ruled the World.!!!!"
April 20, 2010

Global History
How and why are hate groups protected by the constitution? What actions and speech do you think are not protected and why?
April 9, 2010

College Math
By looking at two linear equations, how can you tell that the corresponding lines are parallel?
March 18, 2010

Chemistry
In a titration HCl and NaOH have a 1:1 ratio. Can you still use the formula M1V1 = M2V2 to find the molarity of the NaOH base if we change the acid to sulfuric H2SO4?
March 4, 2010

math
1. Hot dogs come 10 to a package, and hot dog buns come 8 to a package. What is the smallest number of packages of each that Phillip could buy so that there are no leftover hot dogs or buns? Hot dogs 4 Hot dog buns 5 2. Hamburger patties come 6 to a package, and hamburger ...
February 21, 2010

12th grade
Pros: It gave more equality, and less discrimation to minorities. (give many examples of this, like it made it illegal to ban minorities from doing anything a white person could do.) It gave further meaning to the philosophy that all man (people in general) are created equal ...
February 16, 2010

physics
A particle's constant acceleration is south at 2.4 m/s2. At t = 0, its velocity is 43.4 m/s east. What is its velocity at t = 8.0 s? What is the magnitude and direction?
February 14, 2010

Physics
31.7m/s^2 northeast
February 12, 2010

math
Are my answers right please? 1. Hot dogs come 10 to a package, and hot dog buns come 8 to a package. What is the smallest number of packages of each that Ms. Evans could buy so that there are no leftover hot dogs or buns? Hot dogs 4 packages Hot dog buns 5 packages 2. ...
February 10, 2010

physics
Ha Ha !!!
February 5, 2010

science
can a plant live without water air or sunlight?
December 16, 2009

physics
I'm sorry I'll stop changing names
December 13, 2009

physics
A submarine is constructed so that it can safely withstand a pressure of 1.6 x 107 Pa. How deep may this submarine descend in the ocean if the average density of seawater is 1025 kg/m3.
December 13, 2009

algebra
I'm not sure how to solve this problem, but the answer's -12 e^(x-6)=(1/e^2)^(X+6) Thanks :D
December 6, 2009

4th grade
why is .4 equal to .40
December 3, 2009

physics
A box of mass 18.8 kg is pulled to the right with a horizontal force of 9 N. If the box moves to the right with a constant velocity of 1.06 m/s, what is the frictional force acting on the box?
November 16, 2009

Math
Thanks Ms. Sue. Can anyone help with the second question.
November 9, 2009

Math
Professional Security Systems purchased 5 dozen dead-bolt lock sets from a manufacturer for $255. If the company's markup rate is 28% of the selling price, what is the selling price of each lock set? Determine the cost ratio (Retail Method) for Twilight Games and Comix ...
November 9, 2009

Physics121
The back wall of an auditorium is 29.0 m from the stage. If you are seated in the middle row, how much time elapses between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall?
November 8, 2009

Physic
i am not learning acoustics...but physics..sorry for the mis-spelling...i am sorry but i dont understand your approach
November 8, 2009

Physic
The back wall of an auditorium is 29.0 m from the stage. If you are seated in the middle row, how much time elapses between a sound from the stage reaching your ear directly and the same sound reaching your ear after reflecting from the back wall?
November 8, 2009

algebra 2
5X + 7(5X-14)=-18 5X + 35X-98=-18 40X-98=-18 40X=80 X=2 y=-4 You can check these answers by plugging into the original equations
November 8, 2009

Physic
A fan at a rock concert is 30 m from the edge of the stage. The sound intensity level at the edge of the stage is 110 dB. The fan's eardrums have a diameter of 8.4mm. How much energy is transferred to each eardrum in one second? (Hint: It may help to asume that the speaker...
November 7, 2009

Physics
I didnt quite follow ...
November 7, 2009

spanish
Could also be: Que vas a hacer despues del colegio or que haces despues de la escuela. and como escuela va hasta el momento
October 30, 2009

chemistry.
Which hydrocarbon pair below have identical mass percentage of C? A: C3H4 and C3H6 B: C2H4 and C3H4 C: C2H4 and C4H2 D: C2H4 and C3H6 E: None of the above My answer is E...Can any one help me?
September 27, 2009

chemistry.
The molecular of aspartame, the generic name of Nutrasweet, is C14H18O5. The molar mass of aspartame is?
September 25, 2009

English
Taking a computer home to complete a work-related assignment. Is it ethical or unethical? When an individual takes a job they ensure their employer that they will work their very best, and distribute quality work. By any means the worker is required that they get the assigned ...
September 12, 2009

English
In my own perspective I believe that deemphasizing negative test results on a product is a very unethical choice. Negative results have an endless limit of problems that can occur. For example, you could put your entire company in jeopardy if you were to hide the negative ...
September 12, 2009

English
Why deemphasizing negative test results in a report on your product idea is unethical practice?
September 12, 2009

organic chemistry
Some biphenyl (C6H5-C6H5) is produced as a by-product in the synthesis of benzoic acid. Where does it come from? This question has to deal with the Grignard reaction. Can anyone help me with this please?
May 27, 2009

Chemistry
Two moles of pure ammonia were injected into a 2.00L flask at a certain temperature. The equilibrium mixture: 2NH3(G)-->N2(G) + 3H2(G) <-- A) What is the value of the equilibrium constant at this temperature? b) how would the number of moles of ammonia be affected if the...
May 17, 2009

Physics
An ice cube of mass M is placed at rest in on a circular track of radius R, as shown at right. The position of the ice cube along the track follows that of a circle, given by: x^2 + (R – y)^2 = R^2 . A)With respect to the bottom of the track, calculate the potential ...
May 1, 2009

English
Can someone explain me how to write an essay?
April 4, 2009

Chemistry
Which element has the following electron configuration: [Xe] 6s^(2) 5d^(1) 4f^(1)
March 16, 2009

Chemistry
Which electron is, on average, further from the nucleus: an electron in a 3p orbital or an electron in a 4p orbital?
March 16, 2009

Chemistry
According to the quantum-mechanical model for the hydrogen atom, which of the following electron transitions would produce light with the longer wavelength: 2p --> 1s or 3p --> 1s I have the answer, which is 2p --> 1s, but can someone offer some help as to how this is...
March 16, 2009

business math
The Kansas City Star on February 16, 2007 reported on the lowering prices of natural gas. With lower natural gas prices and unseasonably warm weather early this winter the forecast is that gas-heating customers will pay $950 as compared to $1,339 last year. At Kansas Gas ...
March 8, 2009

chemistry
thank you DrBob222!!!
March 5, 2009

chemistry
what [I-]should be maintained in KI(aq) to produce a solubility of 1.3*10^-5 mol PbI2/L when PbI2 is added?
March 5, 2009

U.S History
Thanks, you helped me out a lot :)
February 26, 2009

U.S History
Which factor, self-interest or idealism, was more important in driving American foreign policy in the years 1895-1920? Thanks for the info :)
February 26, 2009

MATH
What is the area of the region bounded by the lines x=1 and y=0 and the curve y= x(e^x^2)? A. 1-e units squared B. e-1 units squared C. (e-1)/2 units squared D. (1-e)/2 units squared or E. e/2 units squared if you can show me how to get that please
February 23, 2009

Geography
Which islands on the equator are in the indian ocean?
January 29, 2009

Physics
Problem 1 (5 Points) In the first application of interferometric methods in radio astronomy, Australian astronomers observed the interference between a radio wave arriving at their antenna directly from the Sun and on a path involving reflection from the surface of the sea. ...
January 26, 2009

need creative picture
-A picture symbolizing somebody who worries a lot.. I was thinking of a scope like a sniper rifle -A picture symbolizing somebody who helps somebody find their identity -A picture symbolizing somebody who blames themself for another's death
January 25, 2009

accounts
by giving me the answer
November 25, 2008

accounts
Stuck Stucky purchased a new truck on July 1, 2005 at a cost of $20,000. The truck had a life of 7 years and salvage of $6,000.00. Using the straight-line method, record the following:- 1. The purchase on July 1, 2005 2. The Depreciation for 2005 3. What is the book value of ...
November 25, 2008

accounts
1. On January 1, 2004 PEN PENNY received a Utility Bill from BEC for $10,000, the bill was due on February 28, 2004. (a) Show the entries on January 1, 2004 and February 28, 2004. 2. On March 1, 2004 PEN PENNY company borrowed $400,000 from the Royal Bank of Canada and issued ...
November 25, 2008

accounts
Analyze the transactions and do the following:- 1. Post to T Accounts 2. Prepare a Chart of Account 3. Record in the General Journal 4. Post to the General Ledger 5. Prepare a Trial Balance 6. Prepare a Six Column Worksheet 7. Prepare an Income Statement 8. Prepare a Capital ...
November 25, 2008

English
how do you paraphrase
November 24, 2008

Physics
A long uniform rod of length 6.66 m and mass 6.74 kg is pivoted about a horizontal, frictionless pin through one end. The rod is released from rest in a vertical position as in the figure. Question 1: At the instant the rod is horizontal, find its angular speed. The ...
October 31, 2008

Physics
i think b is correct.. but what makes "a" incorrect?
October 13, 2008

Chemistry
A) Find [Zn^2+] and [Fe(CN)6 ^4-] in saturated solution of Zn2Fe(CN)6. B) Repeat the above question in 0.1 mM ZnSO4 saturated with Zn2Fe(CN)6.
October 4, 2008

Chemistry
How much energy (heat) is required to convert 248 g of water from 0oC to 154oC? Assume that the water begins as a liquid, that the specific heat of water is 4.184 J/g.oC over the entire liquid range, that the specific heat of steam is 1.99 J/g.oC, and the heat of vaporization ...
September 16, 2008

chemistry
The aspirin content in the analgesic tablets is determined from 120 samples to have a ean of 250 mg with a standard deviation of 5 mg. from a production line, what percentage of the tablets are expected to contain between 243 and 262 mg of aspirin?What is the 95 % confidence ...
September 13, 2008

chemistry
The aspirin content in the analgesic tablets is determined from 120 samples to have a ean of 250 mg with a standard deviation of 5 mg. from a production line, what percentage of the tablets are expected to contain between 243 and 262 mg of aspirin?What is the 95 % confidence ...
September 13, 2008

English 92
analogy for the word hypothermic
September 8, 2008

Chemistry
How do we add,subtract,multiply or divide the uncertainities of two values? For example 28.0 +- 0.5 and 0.899 +- 0.003 Actually i have to solve this question [log{sq.rt. of (0.104 +- 0.006)}/ (.0511 +- 0.0009)]? Hope u get the question in what manner its written.
September 5, 2008

engineering
45 MN/900Gg
September 3, 2008

12th grade
bob i need help paraphrasing
September 2, 2008

Chemistry
The amount of oxalic acid in a sample was determined by the reaction: 2Fe3+ + H2C2O4 + 2H2O----> 2Fe2+ + 2CO2 + 2H3O+. In an analysis, 10.62g of sample required 36.44 ml of 0.013 M Fe3+. Calculate the %w of oxalic acid in the sample.
September 1, 2008

Chemistry
A 35ml 0.1M AgCl solution is mixed with 15ml 0.25M MgCl2 solution. Calculate the moles and molarities of the Ag+, NO3-,Mg2+, and Cl- ions in the solution mixture.
September 1, 2008

Science
Humidity is the amount of water vapor in the air at a given time. At warm temperatures, air can hold more moisture than it can at cold temperatures. Relative humidity is the amount of vapor the air is holding expressed as a percentage of the amount the air is capable of ...
July 18, 2008

Electrochemistry
aa aer you all bad at chem mannn
May 16, 2008

Physics
A 10kg block is attached to a massless cord that doesn't stretch or sag which is rapped around a disc like wheel, m=5Kg, I= (1/2)mR^2. If the block is allowed to drop straight down held back only by the rotation of the wheel: 1. What is the tension of the rope? 2. What is ...
May 11, 2008

Health
I need help on a report on Muscular System!!!!!!!!!!!!!!! P/
April 21, 2008

Maths
Thank you i kept getting the +6 as a negative time for a break i think
April 10, 2008

Maths
can someone please help i think i have the solution but i keep confusing myself with negative - negative (maybe i've been staring at it to much 2(3x - 1) - 3(x - 2) = 4x
April 10, 2008

social studies
mischa
April 1, 2008

math
i dont understand your posting
March 31, 2008

Algebra
thats just what i said in my post....you didnt have to repeat my answer
March 29, 2008

Algebra
you have to convert it and multiply it... -3/4 times 10/1=-15/2 or -7.5
March 29, 2008

Math
Graph the function x if -2<=x<=3 I know x would be x|-2|-1|0|1|2| But I do not understand how to find y. Can someone tell me how to find the y's?
March 29, 2008

Physics
two lenses,one converging with focal length 20.0 cm and one diverging with focal length -10.0 cm , are placed 25.0 cm apart. An object is placed 60.0 cm in front of the converging lens. Determine A) The position and B) the magnification of the final image formed.C)Sketch a ray...
March 25, 2008

Physics.
A shaving/makeup mirror is designed to magnify your face by a factor of 1.33 when your face is placed 20.0 cm in front of it. A) what type of mirror is it? B)Describe the type of image that it makes of your face . C) Calculate the required radius of curvature for the mirror.
March 25, 2008

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