Thursday

July 24, 2014

July 24, 2014

Total # Posts: 1,042

**pre-calculus**

Find the intercepts of the graph of x^2 + y^2 + 4xy - 2x + 7y = 8

**English**

We should either visit the art museum or attend a concert this weekend. Is this a parallel sentence?

**applied math**

how do you solve 2b+9=3

**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

**Chem**

Is sea water close to being a saturated sodium chloride solution?

**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?

**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.

**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 e...

**calculus**

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

**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 ...

**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...

**calculus**

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

**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!

**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 geometr...

**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.

**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?

**phiisical science**

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

**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.

**algebra**

The perimeter of a square is equal to its area plus four. What is the measure of one side of the square?

**Algebra II**

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

**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. :)

**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...

**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??

**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.

**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?

**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 = +...

**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

**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.

**5th grade math**

If you roll two number cubes numbered 1-6, what is the probability of rolling the same number on each cube?

**English**

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

**biology**

what school you go to

**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!

**Chemistry 12 **

Why doesn't stirring not affect solution equilibrium??

**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!

**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 s...

**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."

**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?

**chem**

Balance the following redox equation by the oxidation number methode Ag + HNO3 = AgNO3 + NO + H2O

**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?

**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.

**finite math**

i used x instead of t. thanks

**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....

**finite math**

thanks sooooo much!

**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-...

**finite math**

(281.82-250)*48?

**finite math**

i got $198.87 what about the interest charges?

**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 r...

**finite math**

i put 5.78% and it says it's wrong.

**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). (Ro...

**geometry**

how to solve y= (x-2)^2+4 4x+2y=14 algebraically

**English**

thanks

**English**

My cpu is not letting me view this page

**English**

What would you say this line ment: I am the chosen no hand saves?

**Program planning and evaluation**

I dont know

**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?

**chemistry**

how many grams of glucose C6H12O6 would you need to make 250 mL of 1.0 M solution?

**chemistry**

how many moles of sucrose C12H22O11 does 300mL of a 0.10 M sucrose solution contain?

**ah trig help**

use an apropriate sum or difference indentity to prove the double-angle identity cos2u=1-2sin2u

**trig identies 5.3 &5.4**

i got it nevermind

**english**

an ode

**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 t...

**chemisrty**

2 HClO4(aq) + Ca(OH)2(aq) → 2 H2O(l) + Ca(ClO4)2(aq)

**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)

**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&q...

**chemistry**

Is it possible to produce a form of sodium ferrate using these components? FeCl3 NaOH NaOCl

**English**

A critic should read a story more than once in order to write about it. True or False.

**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...

**5th Grade Math/Making a Duplicate**

a canoe is 5.67 how much is it in cm

**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.

**math **

(x/4−1/x)/(1/2x+1/4)

**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?

**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.

**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

**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

**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?

**Geometry**

Find the perimeter of a square to the nearest tenth if the length of its diagonal is 16 millimeters

**Physics**

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

**Physics**

The work done on an object with a mass of 50 kg raised 3 meters is ________ Nm.

**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

**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.

**Physics**

The kinetic energy of a 4 kg object moving at 3 m/s is _______ J.

**Physics**

The momentum of a 5 kg thrown 3 m/s is _________ kg m/s.

**Physics**

A 18 N object moves 1 m/s. Its KE is ______ J.

**Physics**

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

**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...

**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. CON...

**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

**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.)

**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?

**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?

**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...

**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

**chemistry**

Describe how to make 20 mL of a 6.0 % solution from a stock solution with a concentration of 10 %.

**Algebra**

Find the accumulated value of an investment of $5000 at 5% compounded monthly for 8 years.

**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.

**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!

**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 col...

**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.

**literature**

thanks for the help

**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 t...

Pages: <<Prev | 1 | 2 | 3 | 4 | **5** | 6 | 7 | 8 | 9 | 10 | 11 | Next>>