Monday
December 5, 2016

Posts by maggie

Total # Posts: 413

Algebra
If a bicycle has a crankshaft of 40 teeth, and there are three rear sprockets attached to the rear wheel, 20 teeth, 16 teeth and 12 teeth. The diameter of the rear wheel is 60 cm. Which sprocket should be used to get the most distance in one paddle? What would the distance be?
February 22, 2011

calculus
Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19
February 17, 2011

calculus
Find the derivate of the function f(x) = 2x2 + 23x + 5 What is the value of this derivative when x = 19
February 17, 2011

business calculus
For the function f(x) = 18/(3x-14) determine the x-coordinate of any vertical asymptote
February 10, 2011

calculus
For the function f(x) = 1/(6x2+5x+16) determine if there is a vertical asymptotes
February 10, 2011

calculus
For the function f(x) = 18/(3x-14) determine the x-coordinate of any vertical asymptote
February 10, 2011

calculus
A function f(x) is said to have a removable discontinuity at x=a if: 1. f is either not defined or not continuous at x=a. 2. f(a) could either be defined or redefined so that the new function IS continuous at x=a. Let f(x)= x2+10x+26 2 −x2−10x−24 if x−5...
February 7, 2011

calculus
Consider the function f(x)=4x3+2x2+5, and let c be a number in the interval [01]. For what values of k is there a c in this interval such that f(c)=k?
February 7, 2011

calculus
On the graph of f(x)=3sin(2x), points P and Q are at consecutive lowest and highest points with P occuring before Q. Find the slope of the line which passes through P and Q.
February 4, 2011

calculus
A mass is oscillating on the end of a spring. The distance, y, of the mass from its equilibrium point is given by the formula y=6zcos(10wt) where y is in centimeters, t is time in seconds, and z and w are positive constants. (a) What is the furthest distance of the mass from ...
February 4, 2011

child day care
was this right answer. thanks
February 1, 2011

child day care
1,c 2,c 3,b, 4,c 5,c 6,a 7,a 8,d 9,c 10,c 11,c 12,b 13,c 14,a 15,d 16,c 17,b 18,c 19,b 20,b
February 1, 2011

Math
Thanks math helper but I am more lost than before since my choices for an answer are 25pi m2, 166.67pi m2,33.3pi m2, 100pi m2 I don't know what I am missing here. I am sorry to bother you.
January 18, 2011

Math
Can someone please help me with my math homework problem? My mom tried but she doesn't understand it. What is the surface area of a right circular cylinder with base circle of radius of 5m and height of the cylinder 10m?
January 18, 2011

Spanish
si,lo puedo ver pero donde esta? i am a fluent speaker of spanish,italien,and portugeese i lived in central america
January 12, 2011

AP Calculus AB
1. assign x and y values to the length and width of each box within the pens, and use the formula 600=9x+8y to isolate the y value (i got the 8 and 9 by counting the number of length and width values existed in the diagram) you should get y=(600-9x)/8 2. then, since they asked...
December 12, 2010

chemistry
a mixture of methane and ethane is stored in a container at 294 mmHg. The gases are burned in air to form co2 and h2o. if the pressure of co2 is 357 mmhg measured at the same temperature and volume as the original mixture, calculate the mole fraction of the gases.
December 4, 2010

business
While waiting outside a meeting room, you notice that the next middle manager making a presentation is rehearsing what he will say. The pants zipper of his blue suit is open and part of his white shirt is protruding
November 28, 2010

business
You know that you have only $110 left before you hit the limit on your credit card, and you have $8 in your wallet. You are the host to three clients. One has just announced that he is considering the lobster dinner for $40. The other two clients nod their heads.
November 28, 2010

business
A colleague, an amateur pilot, shows up at a critical meeting with some Japanese executives wearing a tie adorned with pictures of a P51D Mustang escorting a B-29 Superfortress (the Mustang is a World War II fighter and the Superfortress is the type of plane that dropped the ...
November 28, 2010

geometry
It's always a square. 26/4= 6.5 :) There's your answer
November 17, 2010

STOICHIOMETRY
2Al + 3CuSO4 ! Al2(SO4)3 + 3Cu What is the maximum amount of Cu (63.5 g/mol) that could be produced by reacting 20.0 grams of Al (27.0 g/mol) with excess CuSO4?
November 4, 2010

Philosophy
Symbolize these arguments and display truth trees to evaluate the resulting argument forms for validity. If the argument form is invalid, describe (in English) the conditions under which the premises would be true but the conclusion false. 99.32 There will be scorpions in the ...
October 22, 2010

Philosophy
Prove informally, by employing correct definitions and principles of reasoning, that the following are true. 1/ Every formula implies itself. (That is, A implies A . Hint: For this one you will need to employ the definition of interpretation.) 2/ If set S implies formula A , ...
October 22, 2010

Philosophy
Construct natural deduction proofs for each of the following. 118.2 p&(q&r).'. q 118.4 .'. ¬(p&(q&¬p)) 118.10 q .'. ¬(¬p&¬q) 122.3* p " q, ¬p " r .'.¬q " r 122.7* p " q, ¬(p " r) .'. ¬(q " r...
October 22, 2010

ital
venti,ventuno,ventidueventitre,ventiquattro, venticinque, ventisei ventisette ventotto ventinove trenta I KNOW HOW TO SPEAK ITALIEN IF ANY MORE QUESTIONS FEEL FREE TO ASK
October 20, 2010

Physics
When will an object be in equilirium if different forces are acting on the object from the different systems? Would it be appropriate to use F=ma to find the equilibrium?
October 9, 2010

College Chemistry
what is the maximum weight of CuCl that can be prepared from the reaction sequence using 1.0g of Cu turnings to prepare the Cu2+ solution?
October 7, 2010

College Chemistry
how many grams of metallic copper are required to react with the number of moles of Cu2+ , 0.16mol, to form CuCl overall reaction can be taken as: Cu2+(aq) + 2 Cl- (aq) + Cu(s)-->2CuCl(s)
October 7, 2010

College Chemistry
The Cu2+ ions in this experiment are produced by the reaction of 1.0 g copper turnings with excess nitric acid. How many moles of Cu2+ are produced?
October 7, 2010

Geographyand socity
Owh wow....so 'Anonymous' what were you doing here if you weren't looking for answers???? Pshh your no better than us!
October 5, 2010

Physics
Small, slowly moving spherical particles experience a drag force given by Stokes’ law: where r is the radius of the particle, is its speed, and ç is the coefficient of viscosity of the fluid medium. (a) Estimate the terminal speed of a spherical pollution particle ...
September 29, 2010

college
Physical science
September 19, 2010

college
A car accelerates at a rate of 0.6 m/s2. How long does it take for this car to go from a speed of 55 mi/h to 60 mi/h?
September 19, 2010

college
A car accelerates at a rate of 0.6 m/s2. How long does it take for this car to from a speed of 55 mi/h to 60 mi/h?
September 19, 2010

English
But this is what authentic means? based on fact (cultural accuracy) reproducing essential features of an original (cultural accuracy) true to the creator's own cultural personality, spirit, or character (cultural immersion)
September 18, 2010

English
Is the book new shoes for sylvia authentic if so why?
September 18, 2010

Ethics
What evidence do you see of an ethical breakdown in Canadian society affecting all sectors (e.g., business, education, and government)?
September 12, 2010

english check answer
wary, inclination dilemma 9, irate 1o, reotrt
August 28, 2010

algebra
sqrt(36/81)=(sqrt36)/(sqrt81) =6/9 (6^2=36, 9^2=81) =2/3 (take out the common factor 3 from both the denominator and the numerator)
June 16, 2010

GR.12 DATA MANAGEMENT
I GOT IT!!!!!!! [10!/(2!2!) - (9!/2!2!)]+[(2)(10!/2!2!2!) - [(2)(9!/2!2!2!)]=1632960
June 16, 2010

GR.12 DATA MANAGEMENT
How many ways are there to arrange the word: MATHEMATICS, if the last letter can not be "H", and the first letter must be a vowel?
June 16, 2010

algebra
3m+2p=1.8 (qeuation A) 4m+6p=2.9 (equation B) "equation A" times "3": 9m+6p=5.4 (equation A') "equation A'" - "equation B": 5m=2.5 [m=0.5] substitude "m=0.5" into "equation A": 3(0.5)+2p=1.8 1.5+2p=1.8 2p=0.3...
June 16, 2010

business
You work as the manager of the second largest bank in your region of the United States. The bank's top management team has asked you to present an overview of how the current economy and financial changes have impacted your business and what changes must be made as a ...
June 6, 2010

algebra
how do you Simplify (d^3)(d^4)^5?
June 3, 2010

algebra
how do you solve this equation 3x2 + 6x + 3 = 0 ? what does x equal? and how do you factor this? 4ab + 2a + 6b + 3 Thank you SOO much for the help!
June 3, 2010

English
why don't you say: sitting and standing properly are crucial factors to maintaining a healthy back.
May 3, 2010

chemistry
A solution is made by adding 5.0 g Na2CO3 * 10H2O to enough water to make a 500 mL solution. what is the molarity. I have: M=mol solute/liter solution = (5/286)/.5 = .035M 286 is what i got for the molar mass of Na2CO3 * 10H2O Is that correct?? I think it is, but the next ...
May 3, 2010

CHEMISTRY--URGENT
oh, sorry! its 2 liters HNO3 and the answer is 11.65 so it would be: -log [(20 - 2e-8) / 4000] = 2.3 = [OH] 14 - 2.3 = 11.65 (without the rounding of the 2.3) why, though, would you subtract it from the other?
May 2, 2010

CHEMISTRY--URGENT
HNO3 with pH 3 is mixed with 2 L KOH with pH 12. assuming volumes are additive what is the pH of the final solution? I have absolutely no idea how to do this. I do know the answer, though. I have a test tomorrow and I would really appreciate it if someone could help!!!!
May 2, 2010

Medical coding Insurance Math
298
May 1, 2010

9th Grade Social Studies
Had the world gone along with Wilson’s plan to remove economic barriers between nations, what kind of place would the world be? Would it be better? Worse? How would you answer this question?
April 23, 2010

CHEMISTRY--PLEASE HELP, URGENT
A saturated solution of CaSO4(aq) is made in a beaker until there is excess calcium sulfate resting at the bottom. Then solid potassium sulfate is added. Which of the following is true? (The Ksp for potassium sulfate is larger than the Ksp for calcium sulfate) a. More calcium ...
April 12, 2010

CHEMISTRY--PLEASE HELP, URGENT
What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve in 500. mL of 0.01 M aqueous silver nitrate?
April 12, 2010

chemistry--URGENT, PLEASE HELP
What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a saturated solution in water? *For this one the formula is Ag2CrO4, which is [Ag]^2[CrO4]. I plugged x in for CrO4, so x^3 is equal to Ksp. I then got that x = 2.0e-4. However, that x is for CrO4...
April 12, 2010

Chemistry (urgent)
thank you so much!! I got a 100 on the test I was studying for!
April 12, 2010

Chemistry (urgent)
Hi, I have a few chemistry problems that I'm having trouble solving. I put my attempted solutions after the problems in *'s. There was one problem I had no idea how to solve. What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a saturated ...
April 12, 2010

math-DUE TONIGHT PLEASE HELP
The way to find the mean is by adding up all the different values and then dividing by the total number. If there are five numbers you can set up an algebraic equation like: x/5 = 61.8 then you can set up a new equation to solve for the height without the absent student: h/4...
April 12, 2010

Chemistry
Hi, I have a few chemistry problems that I'm having trouble solving. I put my attempted solutions after the problems in *'s. There was one problem I had no idea how to solve. What concentration of silver chromate (Ksp = 9.0 x 10-12) will dissolve to make a saturated ...
April 12, 2010

biology
Thank you!
April 9, 2010

biology
Which of the following statements about sexual and asexual reproduction is FALSE? a. Genetic diversity occurs in sexual reproduction. b. Asexually reproducing organisms can repair their own DNA. c. There are no special reproductive cells in asexual reproduction. d. A ...
April 9, 2010

biology
Thank you!
April 9, 2010

biology
When Darwin published his theory of evolution, he included all of the following ideas EXCEPT the idea that a. species changed slowly over time. b. some organisms become less suited to their environment then others. c. evolution occurs in spurts after major environmental ...
April 9, 2010

geography
Thank You!
April 8, 2010

geography
The factor that is forcing many South Asians to move to cities is a. religious conflict in rural areas. b. the threat of landslides in coastal areas. c. lack of arable land due to a growing population. d. dry conditions in the Indo-Gangetic Plain C?
April 8, 2010

science
Screw you SraMcGin, ciara asked for an answer not for another useless search engine that turns up useless websites
April 4, 2010

language arts
did i punctuate this sentence correctly? "They wanted to have the woman give birth to healthy babies, but they wanted to get as much work out of the woman as possible; therefore, the women were given lighter tasks."
April 4, 2010

math
int 1/ (sq rt (4sec^2 x +4)) dx trigonometric substitution expression: sq rt (x^2-a^2) substitution: x=a sec x identity: sec^2 x -1=tan^2 x
March 4, 2010

math
what is a like fraction? greatest common factor? unlike fractions?
February 28, 2010

Language Arts
I have an essay due tomorrow and it is required to have at least one adverb clause. I'm still a little confused about how to create an adverb clause. Help pleasee?!
February 18, 2010

math
what did the witty raindrop exclaim to all the others
February 4, 2010

Organic chemistry
its semi soluble.... it only dissolves if heated
January 24, 2010

Pre- algebra
66 2/3 of 120?
January 12, 2010

Physics
The initial velocity is 0 because it is starting in your hand, not moving
December 26, 2009

health
If a person has stopped breathing and is receiving pulmonary resuscitation, would it be better to administer pure oxygen or a mixture of oxygen and carbon dioxide? Why?
December 17, 2009

health
if a person has stooped breathing and is receiving pulmonary resuscitation, would it be better to administer pure oxygen or a mixture of carbon dioxide/oxygen?why?
December 16, 2009

math
how do you classify a number ( 5th grade stuff)
December 3, 2009

science
Explain why water is an important solvent in the environment.
November 30, 2009

physics
An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? I think the answer is B but not sure. a) That there is no reaction force-the net force on the object is ...
November 23, 2009

physics
A small particle of mass 2.0 x 10^-19 kg is attached to a nanofiber of relaxed length 0.50 nm (Recall that 1.0 nm = 10^-9 m) . The nanofiber is the black horizontal line-its attached to a substrate (an immovable wall) on the left. The plot is a graph of the force needed to ...
November 23, 2009

physics
An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? a) That there is no reaction force-the net force on the object is zero, so the reaction force is zero ...
November 22, 2009

physics
A small particle of mass 2.0 x 10^-19 kg is attached to a nanofiber of relaxed length 0.50 nm (Recall that 1.0 nm + 10^-9 m) . The nanofiber is the black horizontal line-its attached to a substrate (an immovable wall) on the left. The plot is a graph of the force needed to ...
November 22, 2009

physics
. A 2.0 kg particle is moving along the x axis to the left with a velocity of v= -6.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the particle at t=4.0 s. ...
November 22, 2009

physics
A small particle of mass 2.0 x 10^-19 kg is attached to a nanofiber of relaxed length 0.50 nm (Recall that 1.0 nm + 10^-9 m) . The nanofiber is the black horizontal line-its attached to a substrate (an immovable wall) on the left. The plot is a graph of the force needed to ...
November 22, 2009

physics
An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? a) That there is no reaction force-the net force on the object is zero, so the reaction force is zero ...
November 22, 2009

physics
An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? a) That there is no reaction force-the net force on the object is zero, so the reaction force is zero ...
November 22, 2009

physics
If a mass attached to the center of a vertical circle swings around at a fixed speed (v) and gravity pulls straight downward, would the tensions in the rope attached to the mass be different at the top of the circle, straight down to bottom of circle, and directly straight out...
November 22, 2009

physics
Is it true or false that momentum is conserved when total mechanical energy is conserved?
November 21, 2009

physics
An object in the vacuum of space orbits the earth at a fixed speed in a circular orbit several hundred miles above the earth. What can we conclude about the reaction force? a) That there is no reaction force-the net force on the object is zero, so the reaction force is zero ...
November 21, 2009

physics
In order to move a heavy object you must push against it with a larger force than it pushes on you. Is this true or false?
November 21, 2009

physics
A 2000 kg space probe is moving rightward in empty space along the x axis at 12 m/s. One of the probe’s rockets is fired providing a thrust of 1800j N along the y axis. The rocket fires for 1.5 s. How can I derive the equation for the trajectory of the probe during the ...
November 21, 2009

physics
A small particle of mass 2.0 x 10^-19 kg is attached to a string of relaxed length 0.50 nm .The string is the black horizontal line attached to a an immovable wall on the left. The plot is a graph of the force needed to stretch the string by pulling to the right on it .The ...
November 21, 2009

physics
A mass of 1.1 kg is attached to two cords. The cords are each an angle 30 degrees above and below the horizontal, The mass circles around the vertical pole at a fixed speed of 15 m/s in a circle of radius 0.50 m. How do I calculate the magnitude of the net force and the ...
November 21, 2009

physics
A 4.0 kg particle is moving along the x axis to the left with a velocity of v= -12.0 m/s. Suddenly, between times t =0 and t = 4.0 x a net force = 3t^2 – 12t is applied to the particle, where F is in N and t is in s. Calculate the velocity of the particle at t=4.0 s. Can ...
November 21, 2009

physics
The 2.kg mass is heading toward a ramp-there’s no friction. Notice that at the top right there is a relaxed spring. The spring constant is 50 N/m. Calculate the maximum compression of the spring after the mass has risen up the ramp and hit the spring.
November 21, 2009

college
The 2.kg mass is heading toward a ramp-there’s no friction. Notice that at the top right there is a relaxed spring. The spring constant is 50 N/m. Calculate the maximum compression of the spring after the mass has risen up the ramp and hit the spring.
November 21, 2009

Finance
Risk exposure due to heavy short-term borrowing can be compensated for by: A. carrying more receivables to increase cash flow. B. carrying highly liquid assets. C. carrying illiquid assets. D. carrying longer term, more profitable current assets.
November 15, 2009

French 101
Il vie a Paris pendant deux dans
November 9, 2009

economics
In the article about the financial problems of USA Today, Newsweek reported that the paper was losing about $20million a year. A Wall Street analyst said that the paper should raise its price from 50 cents to 75 cents, which he estimated would bring in an additional $65 ...
October 23, 2009

economics
Bridget has limited income and consumes only wine and cheese; her current consumption choice is four bottles of wine and 10 pounds of cheese. The price of wine is $10 per bottle, and the price of cheese is $4 per pound. The last bottle of wine added 50 units to Bridget’s ...
October 23, 2009

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