Sunday

February 7, 2016
Total # Posts: 1,263

**Chemistry**

1.67014614E-27 kg
*March 4, 2012*

**Chemistry**

1.67014614E-27
*March 4, 2012*

**Algebra**

The electric current I in a circuit varies directly as the voltage V. When 21V are applied, the current is 4A. What is the current when 18 volts are applied
*March 2, 2012*

**Calculus**

what is the curve given by the equation x^3=3xy^2+y^3=1 what is dy/dx?
*February 29, 2012*

**yargo**

a garden is shaped like an x. there is a right angle at each corner of the garden and each side of the garden measures 40 feet long. what is the area of this garden?
*February 27, 2012*

**Calculus**

find f'(x) if f(x)= (cosx)^sinx
*February 23, 2012*

**Calculus**

find y' if sin^-1(xy)=cosy
*February 16, 2012*

**Simple Interest & Maturity Value**

On September 7, Jennifer Rick went to Park Bank to borrow $3,200 at 11 2/3% interest. Jennifer plans to repay the loan on January 5. Assume the loan is on ordinary interest (ordinary interest uses 360 days a year). Solving for: 1. interest Jennifer will owe on January 5 2. the...
*February 16, 2012*

**math/calc**

find y'' if x^4+y^4=16
*February 15, 2012*

**math/Calc**

g(x)={1+cos(pi/2-x/1) 0 for-2 <or= x <or=2 for x<2 or x>2 is g(x) continuous at x=2 is it differentiable at x=2? ex[lain in detail I'm very confused as to how to solve this problem
*February 9, 2012*

**math 205**

the product of 3 and y is less than or equal to the sum of y and 6
*February 2, 2012*

**math/calculus**

Find f’’(x) if f(x)=(6^x^2+3)
*January 19, 2012*

**math/calculus**

Find f’’(x) if f(x)=(6^x^2+3)
*January 19, 2012*

**math/calculus**

Find f’’(x) if f(x)=(6^x^2+3)
*January 19, 2012*

**pennfoster**

B.We helped Joan to pack her things.
*January 19, 2012*

**math/calculus**

f(x)=the squareroot of (x^2-9) and g(x)=1/x-4 find the domain and range of f(g(x)) anf f(f(x))
*January 10, 2012*

**math/calculus**

find the domain and range of the function f(x)=x^2-9/4x^2+x
*January 10, 2012*

**MATH**

MARY SAYS THAT THE GREATER THE NUMBER OF COUNTERS, THE GREATER THE NUMER OF DIFFERENT ARRAYS YOU CAN FORM. GIVE AN EXAMPLE THAT SHOWS THAT MARY IS WRONG.
*January 5, 2012*

**MATH**

MARY SAYS THAT THE GREATER THE NUMBER OF COUNTERS, THE GREATER THE NUMER OF DIFFERENT ARRAYS YOU CAN FORM. GIVE AN EXAMPLE THAT SHOWS THAT MARY IS WRONG.
*January 5, 2012*

**statistics**

The abc shoe factory manufactures shoes 24 hours a day. the workers produce 50,000 shoes every 2.3 days How many hours does it take to produce 50,000 shoes
*January 3, 2012*

**math/calculus**

f(x)= the absolute value of x^2-6x-7 a) Find a piecewise defined function that has no absolute value involved b) Let g(x)=f(x) for x is greater than or equal to 7 find an expression of g^-1(x) c. give the domain and range of g^-1(x)
*January 2, 2012*

**math/calculus**

let f(x)=ln(x)x>0 let k(x)= f(g(x)) and m(x)= f(g(x)) a) Find the domain of the function K(x). b) Find the domain of the function M(x). c) Find the value of k'(5)
*January 2, 2012*

**math/calculus**

lim as x->+1 x^3 -1/x^2 -1 lim as x->-1 x^3 -1/x^2 -1 lim as x->1 x^3 -1/x^2 -1
*January 2, 2012*

**College Algebra**

The function H(x) = 2.75x + 71.48 can be used to predict the height in cm of a woman whose humerus is "x" cm long. Predict the height of a woman whose humerus is 34 cm long?
*December 31, 2011*

**math/calculus**

find f"(x) if f(x)= cube root(x^2-2x+1)
*December 20, 2011*

**math/ calculus**

full work out with explanation of this problem please we're working with derivatives and i dont understand it given h(x)= cotx/x find h'(pi/2)
*December 20, 2011*

**math/ calculus**

its like a sub three times the squareroot of x^2-2x+1
*December 19, 2011*

**math/ calculus**

find f''(x) if f(x)= 3(ãx2-2x+1)
*December 19, 2011*

**math/calculus**

given h(x)= cotx/x find h'(ð /2)
*December 19, 2011*

**math/ calculus**

given h(x)= cotx/x find h'(ð/2)
*December 15, 2011*

**Physics **

The drawing shows an ideal gas confined to a cylinder by a massless piston that is attached to an ideal spring. Outside the cylinder is a vacuum. The cross-sectional area of the piston is A = 2.50 10-3 m2. The initial pressure, volume, and temperature of the gas are, ...
*November 16, 2011*

**statistics**

Hi there, I need help with the quialitive summary paper. My subject is on elder abuse.
*November 16, 2011*

**math**

joe left a campsite on a trip down the river in a canoe, traveling a 6 km/h. four hours later, joe's father set out after him in a motorboat. The motrboat traveled at 30 km/h. how long after joe's father started did he overtake the canoe? how far had joe traveled down ...
*November 15, 2011*

**math**

a train left podunk and traveled north at 75 km/h. two hours later, another train left podunk and traveled in the same direction at 100 km/h. how many hours had the first train traveled when they were 1420 km apart?
*November 15, 2011*

**computer**

Which type of graphics file format keeps track of each individual point in the immage? a) bitmap b) detailed image c)pointilated D) vector.....
*November 9, 2011*

**Chemistry**

My mobile phase for HPLC (High Performance Liquid Chromatography) test consists of 3 components in the ratio 5:250:745. In preparing the mobile phase, is it advisable to first measure 745ml of component A, followed by 250ml of component B and lastly 5ml of component C?
*November 3, 2011*

**math**

Howard leaves the dock and sails 2.5miles west He turns south and sails 3.5 Then he turns east and sails 2.5 miles In what direction should howard turn if he wants to use the most direct route to return to the dock ? If Howard use this route ,how many miles will he hv sailed ...
*November 2, 2011*

**Chemistry**

Hi, I have a question on column length for HPLC (high performance liquid chromatography). If the column length is increased,eg from 100mm to 150mm and all other column parameters e.g. particle size of stationary phase, internal diameter..etc.remain the same, how does it affect...
*October 20, 2011*

**Arts/230**

Social views and patterns are often protrayed in art. How did the rising middle-class of the enlightenment era play into the context of their painting? Did it contribute to or detract from the technical qualities of the paintings?
*October 9, 2011*

**Chemistry-help needed**

Posted by angie on Saturday, October 8, 2011 at 6:02am. I have a method using HPLC (high performance liquid chromatography). It states that a 4.6 x 150mm,3um column should be used. (stationary phase : octadecylsilyl silica gel). I have a 4.6 x 100mm,2.7um column, silica-based...
*October 8, 2011*

**Chemistry-thanks**

I have a method using HPLC (high performance liquid chromatography). It states that a 4.6 x 150mm,3um column should be used. (stationary phase : octadecylsilyl silica gel). I have a 4.6 x 100mm,2.7um column, silica-based, bonded-phase (non-polar) column. Can you advise if ...
*October 8, 2011*

**math (please help)**

Let r= 3-3 sin θ How do I test for symmetry θ = π/2?
*October 5, 2011*

**Chemistry**

Is there a formula used to calculate this problem, or should I only look at the table in my book?
*October 4, 2011*

**business communications**

when you are writing subject lines for negative messages to peers and subordinates: a) put the topic, but not your action on it, in the subject line. b)put the topic, including your action on it, in the subject line. c)do not include the topic on the subject line. d)describe ...
*September 28, 2011*

**General-English**

Posted by angie on Sunday, September 25, 2011 at 4:48pm. Is the change in trade name of a material considered a "like-for-like" change? General-English - Ms. Sue, Sunday, September 25, 2011 at 4:52pm Please explain what you mean by a "like-for-like" change ...
*September 25, 2011*

**General-English**

Is it an equivalent (i.e. identical?"? For example, if I change an old piece of equipment with a new piece which has exactly the same specifications as the old one, then it is an equivalent change. In this case, I think it is not an equivalent change?
*September 25, 2011*

**General-English**

Is the change in trade name of a material considered a "like-for-like" change?
*September 25, 2011*

**physics**

if two lighting volts heat exactly same place at the same time in are frame of ref,it is possible that observes in other frames will see the volts heating at def. time or diff. places? explain
*September 25, 2011*

**physical science**

if two lighting volts heat exactly they same place at they same time in are frame of ref.,it is possible that observed in other frames will see the volts heating at diff. time r at diff. places????? explain.
*September 25, 2011*

**geometry**

U=(a,b,c,d,e,f,g,h,i,j,k) A=(a,c,d,f,g,i) B=(b,c,d,f,g) C=(a,b,f,i,j) Determine the following A'square B'
*September 22, 2011*

**physics**

A particle travels along a straight line with a speed = (0.50 -7 ), where is in seconds. Determine the acceleration of the particle when = 2 .
*September 19, 2011*

**DRAMA**

Thanks
*September 18, 2011*

**DRAMA**

One difference between tragedy and comedy is that tragedy A. uses supernatuarl elements B. usually features an extraodinary hero. C.makes us laugh at ourselves,not others. D. uses metaphors and analogy to make its point
*September 18, 2011*

**The Short Story Part 2**

Thank You
*September 17, 2011*

**The Short Story Part 2**

In a "Pair of Silk Stockings",the silk stockings are a symbol of? A.Mrs. Sommers's inability to handle money. B.Mrs. Sommers's lack of concern for her children. C.Mrs. Sommers's selfish needs. D.Mrs. Sommers's desire for attention.
*September 17, 2011*

**chemistry**

How many grams of Cu(OH)2 can be produced from the reaction of 0.500g Cu with 30.0 mL of 3.0M NaOH? Which reactant is the limiting reagent?
*September 14, 2011*

**Math**

Water covers approximately 11,800 mi squared of Florida, which is about 18% of Florida's area. What is the total area of Florida to the nearest thousand square miles?
*September 14, 2011*

**statistics**

128
*August 25, 2011*

**algebra**

jim bought a pair of shoes for $50 and laces for $1. if the sales tax is $7, how much tax must he pay?
*August 17, 2011*

**math**

A separate blueprint for the ramp uses a scale of 1cm : 25cm. The height of the ramp on the blueprint is___ cm.
*August 11, 2011*

**pre algreba**

7-3 (x-5) thxs
*July 13, 2011*

**pre algreba**

7-3 (x-5) thxs
*July 13, 2011*

**math**

7x+4=2x+7
*July 11, 2011*

**accounting**

Paid 55.00for landscaping property. Used cash. Journalize
*May 29, 2011*

**Chemistry**

Which equation shows conservation of mass and charge? A.NH4Br → NH3 + Br2 B. 2Mg + Fe3+ → Mg2+ + 3Fe C. H2SO4 + LiOH → Li2SO4 + H2O D. Cu + 2Ag+ → Cu2+ + 2Ag It's either b or d, since they both have two elements with an oxidation number of 0. Which ...
*May 21, 2011*

**sociology**

Which sociological perspective holds the view that people create their social worlds through interaction and manipulation of symbols? (Points : 1) functionalist conflict interactionist global
*May 15, 2011*

**University Calculus**

Set up (do not evaluate) the integral that gives the surface area of the surface generated by rotating the curve y=tanhx on the interval (0, 1) around the x-axis. Anyone who can help? Not really sure how to even begin! Thanks
*May 13, 2011*

**Math**

If a pizza with a diameter of 12 inches costs $10.99 , based on area, how much should a 15 inch pizza cost?
*May 8, 2011*

**english**

1. Select the sentence that is punctuated correctly. (Points : 1) Paloma did not make it to work for, her car broke down on the freeway. Paloma did not make it to work for her car, broke down on the freeway. Paloma did not make it to work, for her car broke down on the freeway.
*April 25, 2011*

**English**

This is a thank you letter to a company. Please check it and let me know what you think. If I need to change something or its just fine. Check for any errors. Thank you very much for taking the time to meet with me on April 14 regarding the position of Administrative Assistant...
*April 10, 2011*

**English**

Dear Mr. Kimball: Would you be interested in owning one of the most important books collection in our nation history? American Literature Masterpieces is a collection being published by the American Literary Association. The collection consists of 125 volumes of the greatest ...
*April 10, 2011*

**English**

Please read and check for any errors.Let me know what I need to change or add. I was debating whether ot not I suppose to underline American Literature Masterpieces.Thank you so much. _______________________________________ Would you be interest in owning one of the most ...
*April 10, 2011*

**Pre-Algreba**

The ratio of the number of postcards john had to the number of postcards Zachary ha d was 4:9. Zachary had 45 more postcards than John. After giving some postcards to John, Zachary had 6/7 as many postcards as John. (A) How many postcards did Zachary have in the beginning? (B...
*April 6, 2011*

**HCS/325 HEALTH CARE MANAGEMENT**

How will ethical issues alter your way of conducting change in the organization
*March 21, 2011*

**math**

please help the multiple choice answers do not match problems! 15-3+2-9 choices 0, 2, 4, 8 16+4divided by 2+9 choices 4, 11, 13, 21
*March 21, 2011*

**math**

this is multiple choice but 5 is not a choice they are 0, 2, 4 or 8
*March 21, 2011*

**math**

what is the value of this expression 15 - 3 + 2 - 9
*March 21, 2011*

**austin community college**

how many outcomes are there in an experiment consisting of rolling three dice followed by tossing a coinonce?
*March 20, 2011*

**Math**

Wouldn't it depend on where it started and finished? If it makes exactly one round, the displacement is zero. well i think it would be zero i dont know.
*March 15, 2011*

**science**

it actual postal say distance not displacement and i dont know even the answer
*March 15, 2011*

**math**

How many two-digits multiples of 3 are factors of 144?
*March 15, 2011*

**math**

Bill and Rosa have only nickels and dimes. Rosa has 75 cents and Bill has 90 cents. Each has the same number of coins and Bill has the same number of dimes as Rosa has nickels. How many nickels does Rosa have?
*March 14, 2011*

**PSYCHOLOY**

CONTRAST TWO THEORIES OR PERSPECTIVES FROM LATE STAGE ADULT DEVELOPMENT
*March 8, 2011*

**math !!!! :O**

Principal: $1,610 Interest rate: _______________ Time: 4 years Simple interest: $450.80 fill in the blank
*March 7, 2011*

**chemistry**

When 1.70 mol CO2 and 1.70 mol H2 are placed in a 0.850 L container at 395 C, the following equilibrium is achieved: CO2(g) + H2(g) = CO(g) + H2(g) If Kc = 0.802, what are the concentrations of each substance in the equilibrium mixture?
*February 25, 2011*

**History**

Which city-state was better: Sparta or Athens
*February 17, 2011*

**History**

During 400-600 B.C.
*February 16, 2011*

**History**

What were some pros and cons about the Athens, for men and women
*February 16, 2011*

**English**

between trips, down
*February 16, 2011*

**English**

do a common go between trip,do At this time, Do I suppose to put July 10 th, July 12th, August 2nd, and August 9th.
*February 16, 2011*

**English**

Please check for any errors and correct them for me. Enclosed is the information you requested concerning our float trips down the Colorado River in the Grand Canyon. All departure dates and prices for the various trips are listed in our booklet. At this time the trips leaving...
*February 16, 2011*

**English**

was to were
*February 16, 2011*

**English**

continue to continuing
*February 16, 2011*

**English**

Ok lol. As you know, According to our initial investigation,
*February 16, 2011*

**ENGLISH**

O ok I got you yes I understand. You are right about that
*February 16, 2011*

**ENGLISH**

I don't know it just seem like it should.
*February 16, 2011*

**Chemistry**

To an initially evacuated 50.0L container maintained at 155C were added 3.20g of gaseous xenon and 4.00g of gaseous fluorine. A spark was used to initiate reaction between xenon and fluorine, and gaseous xenon hexafluoride was the sole reaction product. What was the pressure ...
*January 27, 2011*

**7th grade **

i need help on probability in math
*December 8, 2010*

**physics**

A centrifuge in a medical laboratory rotates at an angular speed of 3500 rev/min. When switched off, it rotates through 54.0 revolutions before coming to rest. Find the constant angular acceleration of the centrifuge in rad/s^2.
*November 28, 2010*

**healthcare mgt-college**

You are a new administrator at a hospital, the icu & er are suffering a shortage of respiratory therapists, you need to gather information for a meeting with them, what information do you need before the meeting? develop a tactical plan, what are the major issues? how does it ...
*November 15, 2010*