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October 2, 2014

Posts by amber


Total # Posts: 1,138

applied math
how do you solve 2b+9=3
August 30, 2011

math
give expressions in the variable n, n ≥ 3 for the number of sugar cubes in the n*n*n cube with 0,1,2, or 3 painted faces, respectively
August 30, 2011

Chem
Is sea water close to being a saturated sodium chloride solution?
August 29, 2011

accounting
what is the journal entry if a owner of a company deposited $15,000 in their checking account. In return they received 1000 shares of common stock in their corporation. The par value of the common stock is $1 per share?
August 26, 2011

math
g(x)= 1-2x-3, x< or equal to 0. x-18, x>6 find g(6). so I used the first equation. 1/2(6)-3 and I got 0, but that's not the right answer so I'm not sure what I'm doing wrong.
August 26, 2011

calculus
Recall that a function G(x) has the limit L as x tends to infinity, written lim(x->infinity)G(x) = L, if for any epsilon > 0, there exists M >0 so that if x > M, then |G(x) − L| < epsilon. This means that the limit of G(x) as x tends to infinity does not ...
August 1, 2011

calculus
sorry, i meant ln(1-x) in the first sentence
August 1, 2011

calculus
You are right my expansion was incorrect ln(x-1) = series of (x^n+1)/n+1 = x + x^2/2 + x^3/3 i dont know why your terms are negative though. After i multiply (x + x^2/2 + x^3/3) by (1 + x^2/2! + x^3/3!) = x + x^2/2 + (x^3/2! + x^3/3) = x + x^2/2 + 5x^3/6 I dont understand why ...
August 1, 2011

calculus
the question asks to use power series though. So i found the power series of ln(1-x) = Series of nx^n-1 and for e^x is the series of x^n/n! i then found the first three terms of each ln(1-x) = 1 + 2x +3x^2 e^x = 1 + x^2/2! + x^3?3! after multiply them i got 1 + 2x + (X^2/2!+3x...
August 1, 2011

calculus
Use multiplication of power series to find the first three non-zero terms of the Maclaurin series of e^x ln(1 − x).
August 1, 2011

calculus
wait. aren't all the odd terms positive? since its (-1)^n-1? because if you sub n=3, it becomes (-1)^2, which is positive? And thank you once more. This was very helpful!
July 31, 2011

calculus
So, you're saying that when you separate an alternating series into two (odd and even) then the (-1)^n-1 goes away? And why did you make S1 negative, but not S2. And do i need to find the sum for S2 to answer the question? Because i only know how to find the sum of ...
July 31, 2011

calculus
im confused. I was taught that if it is an alternating series then you can only use the alternating series test to see if it was diverging or converging. And i did the alternating series test and all the conditions were met for each series seperately.
July 31, 2011

calculus
Show that the series(−1)^n−1(bn) where bn = 1/(n^1/2) if n is odd and bn = 1/2^n if n is even, diverges. Why does the alternating series test fail?
July 31, 2011

phiisical science
Suppose an unknown substance has a melting temperature of 1,200 degrees Celsius and a density of 16.7 g/cm3.
July 26, 2011

thermodynamic
A rigid vessel of 1m^3 contains steam at 20 bar and 400 degree C. the vessel is cooled until the steam is just dry saturated. Calculate the mass of steam in the vessel.
July 17, 2011

algebra
The perimeter of a square is equal to its area plus four. What is the measure of one side of the square?
July 2, 2011

Algebra II
Solve 1. 3x^2-9x=0 2. 12x^2+30x=-12 3. 9a(a+1)=4 4. 16x^2=25
July 1, 2011

Health Psychology
Ok, thank you. I believe I also need to add one more psychologist to the list, making it 5 different psychologists, but I was under the impression I only had to assign 1 job to each. Thank you for clearing this up for me. This helps so much to get a second out look. :)
June 24, 2011

Health Psychology
I want to make it clear that I do not want any answers to the project I am about to post on here. I only need help understanding it a little. I am trying to get online to speak with my professor but our school site is down at the moment. I think I know what I am doing, I just...
June 24, 2011

physics
a spring has a force constant of 20000 N/m how far must it be strectched for its potential energy to be 43 J??
June 24, 2011

college algebra
2/5(5x-3) - 1/3(12x-5). Have the correct answer but need someone to show me how to solve for it.
June 20, 2011

Algebra
Elena bicycles 4 km/h faster than Robert. In the same time it takes Robert to bicycle 27km/h, Elena can bicycle 39 km. How fast does each bicycle travel?
June 19, 2011

chemistry
Use the standard reaction enthalpies given below to determine ΔH°rxn for the following reaction: 2 NO(g) + O2(g) → 2 NO2(g), ΔH°rxn = ? Given: N2(g) + O2(g) → 2 NO(g), ΔH°rxn = +183 kJ 1/2 N2(g) + O2(g) → NO2(g), ΔH°rxn = +...
June 14, 2011

chemistry
According to the following thermochemical equation, what mass of H2O (in g) must form in order to produce 975 kJ of energy? SiO2(s) + 4 HF(g) → SiF4(g) + 2 H2O(l), ΔH°rxn = -184 kJ
June 14, 2011

chemistry
A 4.98 g sample of aniline (C6H5NH2, molar mass = 93.13 g/mol) was combusted in a bomb calorimeter with a heat capacity of 4.25 kJ/°C. If the temperature rose from 29.5°C to 69.8°C, determine the value of ΔH°comb for aniline.
June 14, 2011

5th grade math
If you roll two number cubes numbered 1-6, what is the probability of rolling the same number on each cube?
June 12, 2011

English
I need help writing a paragraph using these words. Retrospect, Inane, Squelch, Subsidize, and Lethargy.
June 1, 2011

biology
what school you go to
June 1, 2011

Chemistry
Given the equilibrium: CO + 2H2 = CH3OH H=-18.0kJ How will the concentration of CO at equilibrium be affected by the following? a) Adding more CH3OH b) Removing some H2 c) Reducing the temperature. I don't understand how i'm supposed to figure these out.. please help!
May 31, 2011

Chemistry 12
Why doesn't stirring not affect solution equilibrium??
May 31, 2011

Chemistry
OMG Doctor Bob you are a huge help! And you right i did have that a dozen times lol but i wasn't sure if i had it right because i couldn't het the last part to work out for me! But i have it now so thanks a bunch!
May 28, 2011

Chemistry
Balance the following redox equation by the oxidation number methode Ag + HNO3 = AgNO3 + NO + H2O I have all the oxidation numbers i just don't understand how i'm supposed to balance it according to them. I read the sites and i can't get it. Do i balance out each ...
May 28, 2011

english
Can you fix this sentence? "When the movie Star Wars premiered in 1977, it was both surprising and a revolution in its special effects."
May 27, 2011

chem
i have all the oxidation numbers for all the of elements but i don't understand how i'm supposed to balance the equation using the oxidation numbers. Do i have to to change the oxidation numbers to equation the same on each side?
May 25, 2011

chem
Balance the following redox equation by the oxidation number methode Ag + HNO3 = AgNO3 + NO + H2O
May 25, 2011

chem
How many grams of potassium permanganate (KMnO4) should be added to a 100 mL volumetric flask to prepare a 0.02505 M solution when the flask is diluted to the mark with water?
May 18, 2011

trig
how do you graph y=-(1/4)sin(3/4x+pi/8? include the amplitude, period, vertical translation, horizontal shift, and table of values please.
May 11, 2011

finite math
i used x instead of t. thanks
May 7, 2011

finite math
As online attacks persist, spending on information security software continues to rise. The table gives the forecast for the worldwide sales (in billions of dollars) of information security software through 2007 (t = 0 corresponds to 2002): Year, t 0 1 2 3 4 5 Spending, y 6 8....
May 7, 2011

finite math
thanks sooooo much!
May 7, 2011

finite math
Kane Manufacturing has a division that produces two models of hibachis, model A and model B. To produce each model-A hibachi requires 3 lb of cast iron and 6 min of labor. To produce each model-B hibachi requires 4 lb of cast iron and 3 min of labor. The profit for each model-...
May 7, 2011

finite math
(281.82-250)*48?
May 7, 2011

finite math
i got $198.87 what about the interest charges?
May 7, 2011

finite math
The price of a new car is $16,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 6%/year compounded monthly. (Round your answers to the nearest cent.) What monthly payment will she be ...
May 7, 2011

finite math
i put 5.78% and it says it's wrong.
May 7, 2011

finite math
Carlos invested $6,000 in a money market mutual fund that pays interest on a daily basis. The balance in his account at the end of 8 mo (245 days) was $6,230.23. Find the effective rate at which Carlos's account earned interest over this period (assume a 365-day year). (...
May 7, 2011

geometry
how to solve y= (x-2)^2+4 4x+2y=14 algebraically
May 4, 2011

English
thanks
May 4, 2011

English
My cpu is not letting me view this page
May 4, 2011

English
What would you say this line ment: I am the chosen no hand saves?
May 4, 2011

Program planning and evaluation
I dont know
May 1, 2011

chemistry
What is the mole fraction of sulfuric acid in a solution made by adding 3.4 grams of sulfuric acid to 3500 mL of water?
April 28, 2011

chemistry
how many grams of glucose C6H12O6 would you need to make 250 mL of 1.0 M solution?
April 28, 2011

chemistry
how many moles of sucrose C12H22O11 does 300mL of a 0.10 M sucrose solution contain?
April 28, 2011

ah trig help
use an apropriate sum or difference indentity to prove the double-angle identity cos2u=1-2sin2u
April 26, 2011

trig identies 5.3 &5.4
i got it nevermind
April 26, 2011

english
an ode
April 24, 2011

US History
1. Which three amendments that were passed almost 100 years earlier, guaranteed that African-Americans had the right to vote? 2. Why was the Voting Rights Act of 1965 necessary? 3. Name three ways that local jurisdictions tried to inhibit African-Americans from voting prior ...
April 24, 2011

Chemistry
At which temperature will the following reactions reverse? Use the thermodynamic date provided at the end of the book. a) 2Ca(s) + O2(g) -> 2CaO(s) b) 2CH4(g) + 4 O2(g) -> 2CO2(g) + 4H2O(g)
April 7, 2011

Chemistry
The trick is that the heat lost from the metal is equal to the heat gained by the water. So q lost = f gained. Since the metal went from 100.0C to 32.5C I'd say it lost. The water went from 20.0C to 32.5C, so it gained. "q" then represents the metal and "f&...
April 6, 2011

chemistry
Is it possible to produce a form of sodium ferrate using these components? FeCl3 NaOH NaOCl
April 5, 2011

English
A critic should read a story more than once in order to write about it. True or False.
April 5, 2011

Math
Postal regulations specify that a package sent by priority mail may have a combined length and girth of no more than 129 in. Find the dimensions of a cylindrical package with the greatest volume that may be sent by priority mail. Hint: The length plus the girth is 2πr + l...
April 4, 2011

5th Grade Math/Making a Duplicate
a canoe is 5.67 how much is it in cm
March 29, 2011

Chemistry
At a particular temperature, K = 3.75 for the following reaction. SO2(g) + NO2(g) <==> SO3(g) + NO(g)\ If all four gases had initial concentrations of 0.550 M, calculate the equilibrium concentrations of the gases.
March 27, 2011

math
(x/4−1/x)/(1/2x+1/4)
March 27, 2011

Physics
A sled of mass 5.98 kg is coasting along on a frictionless ice-covered lake at a constant speed of 1.42 m/s. A 1.98-kg book is dropped vertically onto the sled. At what speed does the sled move once the book is on it?
March 27, 2011

geometry
How do I solve this? 4/3PI*R^3 When R=6 I get 288 if I do it in PI form. Just seems really high.
March 21, 2011

Alegebra
i have 5 questions, i dont know how to solve these questions. 7= 2 +5(z-2) 15(s-3)=12s-43 2a-6=3(a-4) 2(b-3)+5=3(b-1) 6x +7 / 5 = x
March 11, 2011

Literature
1. supernatural 2.imagination 3.everyday occurrences 4.emotional freedom 5.individual freedom 6.love of nature if you're in Brit Lit for the American School like i am... i found the answer in the definition of Romanticism in the back of the Study Guide
March 10, 2011

Algebra
A brick staircase has a total of 16 steps The bottom step requires 112 bricks. Each successive step requires 4 fewer bricks than the prior one. How many bricks are required to build the staircase?
March 7, 2011

Geometry
Find the perimeter of a square to the nearest tenth if the length of its diagonal is 16 millimeters
March 6, 2011

Physics
If you do work on an object in 1/3 the usual time, your power output is ____ times the usual power output
March 2, 2011

Physics
The work done on an object with a mass of 50 kg raised 3 meters is ________ Nm.
March 2, 2011

Physics
Two identical gliders slide toward each other on an airtrack. One moves at 1 m/s and the other at 2 m/s. They collide and stick. The combined mass moves at ____ m/s. Answer
March 2, 2011

Physics
A 2 kg ball rolls at 2 m/s toward a 1 kg ball at rest. After the balls collide they stick together and move at _____ m/s.
March 2, 2011

Physics
The kinetic energy of a 4 kg object moving at 3 m/s is _______ J.
March 2, 2011

Physics
The momentum of a 5 kg thrown 3 m/s is _________ kg m/s.
March 2, 2011

Physics
A 18 N object moves 1 m/s.  Its KE is ______ J.
March 2, 2011

Physics
____ N of work are done on your physics text when you carry it horizontally across a 15 meter wide room.
March 2, 2011

Alegbra sequences
Year 2003 2004 2005 2006 Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the preceeding year. Round to the two decimal places and show the Texas population increase that is approximately geometric. 1.01 B. Write the general term...
March 2, 2011

medical
I. AMBULATORY CARE FACE SHEET Admit Date: 7/8/20XX @ 20:22 Discharge Date/Time: 7/9/20XX @ 10:10 Sex: M Age: 47 Disposition: Home Admitting Diagnosis: Possible esophageal foreign body. Discharge Diagnosis: Esophageal foreign body. Procedures: EGD with foreign body removal. ...
February 28, 2011

Math
10+10=20 5.29/20=0.2745 4+4=8 2.98/8=0.3725 The better deal is the one pack of 10 for $5.49 and get one free
February 27, 2011

college algebra
Find the maximum value of 5x + 7 – x2 on the horizontal span of 0 to 5. (Enter the maximum value of the expression, not the value of x at that point.)
February 27, 2011

college algebra
If an average-size man with a parachute jumps from an airplane, he will fall 12.5(0.2t - 1) + 19t feet in t seconds. How long will it take him to fall 134 feet?
February 27, 2011

ALGEBRA 1
Cindy will require $15,000 in 2 years to return to college to get an MBA degree. How much money should she ask her parents for now so that, if she invests it at 12% compounded continuously, she will have enough for school?
February 27, 2011

algebra 1 sequences
Year 2003 2004 2005 2006 Populatation 22.12 22.49 22.86 23.41 A. divide the population for each year by the population in the preceeding year. Round to the two decimal places and show the Texas population increase that is approximately geometric. 1.01 B. Write the general term...
February 26, 2011

Algebra
Jennifer takes a job with a starting salary of $39,000 for the first year with an annual increase of 5% beginning in the second year. What is Jennifer's salary, to the nearest dollar
February 26, 2011

chemistry
Describe how to make 20 mL of a 6.0 % solution from a stock solution with a concentration of 10 %.
February 22, 2011

Algebra
Find the accumulated value of an investment of $5000 at 5% compounded monthly for 8 years.
February 22, 2011

algebra
If p(t) is the profit (in dollars) that I expect my business to earn t years after opening, use functional notation to express my expected profit after 4 years and 6 months.
February 19, 2011

Algerbra 2
I am doing a worksheet for my alg. 2 class and in the worksheet it says: 'Simplify the expression. Assusme all variable are positive.' the problem is perentheses, square root of six times the power of 3 square root of six perentheses power of six!
February 15, 2011

STATISTICS
Private college and universities rely on money contributed by individuals and corporations for their operating expenses. Much of this money is put into a fund called an endowment, and the college spends only the interest earned by the fund. A recent survey of eight private ...
February 15, 2011

american literature
list three rhetorical devices that patrick Henry uses in his "speech in the virginia convention." Give an example from the speech of each rhetorical device.
February 10, 2011

literature
thanks for the help
February 10, 2011

PHY
Ok...I know this is a stupid question, but I need help! Ok, here it is: An object that has more electrons than it does protons will be _____ a CL^-1 ion. repelled by attracted to unaffected by I know that opposites attract and that same repells, but I am doubting myself with ...
February 9, 2011

Physics
I have been working on my Phys homework and came accross this question that is giving me some trouble: The charge (coul) on an object increases according to (q) = (2 coul)e[(0.050/sec)(t)], where t is in seconds. At how many seconds is the object deficient 1.56 x 10^20 ...
February 5, 2011

Random Question
Ok thank you.
February 5, 2011

Random Question
In the movie "Hauting Sarah" what is the twin sister trying to accomplish??? bringing her son back through her sister?
February 5, 2011

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