Friday

May 29, 2015

May 29, 2015

Total # Posts: 815

**Algebra**

I don't get this.
*October 13, 2011*

**ncu**

a health care professional wishes to estimate the birth weight of infants how large a sample must she select to be 90% confident that the true mean is within 6 ounces of e sample mean. the standard deviation of birth weights is is known to be 8 ounces
*October 6, 2011*

**math**

you first find the number pattern
*September 15, 2011*

**Chemistry**

What are the differences between "wet gases" and "dry gases?" Wet gas - contains H2O whereas Dry gas - does not contain H2O? Dry gas only contain Hydrogen?
*September 5, 2011*

**Algerbra**

A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x x = 2 y = 6 answer 3 please explain!
*August 30, 2011*

**Algerbra Fixed**

A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x
*August 30, 2011*

**algebra**

A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x
*August 30, 2011*

**algebra**

2xy + 6 -------- 3y -4z if x= 2, y=6 anwser 3 this is a question from in class i dont get. Could you explain to to me
*August 30, 2011*

**engineering**

what is civil engineering?
*August 21, 2011*

**algebra**

Find the y intercept for the equation -2x+2=4
*August 19, 2011*

**Calculus**

I'm studying infinite series and am really struggling with memorizing all the tests for convergence in my book, there's like 10 of them. I don't think I'm going to be successful in memorizing all of them. I will never be asked in my course to use a specific ...
*August 17, 2011*

**Math**

Is this a true statement and what are the steps to figure it out? 5x-3y=15:(0,5)
*August 17, 2011*

**Algebra**

Please help me One bowling charges $5.50 for shoe rental plus $2.50 per game. A second bowling alley charges $4.00 for shoe rental plus $3.00 per game. If one person rents a pair of shoes to bowl, how many games should they bowl to make the first bowling alley cheaper than the...
*August 16, 2011*

**statistics**

Consider a binomial experiment with 20 trials and probability 0.45 on a single trial. Use the normal distribution to find the probability of exactly 10 successes. Round your answer to the thousandths place.
*August 2, 2011*

**psychology**

I need help clarifying something. I was under the impression that Human service takes a generalist approach, but in a recent discussion, I was told that it is important for a therapist, clinician ect.to choose a theoretical Framework. Why is this?
*July 29, 2011*

**MATLAB**

nevermind
*July 21, 2011*

**MATLAB**

I got another MATLAB question that I seem to be struggling with. Use two separate input statements to prompt a user to enter his or her first and last names. Use the disp function to display those names on one line. (You'll need to combine the names and some spaces into a ...
*July 21, 2011*

**Computer Science - MATLAB**

thanks mathmate. It's way above my head to. I got another question Consider the following two equations: x^2 + y^2 = 42 x + 3y + 2y^2 = 6 Define a symbolic equation for each, and solve it by using MATLAB's symbolic capability. Could you solve these equations by using ...
*July 20, 2011*

**math**

I'm not exactly sure what your asking for or what the question is? I assume your trying to solve for the derivative? Did you try plugging it into wolfram alpha an clicking on show steps? That always works. Well not always, but it defiantly well if interperting (e^x-e^-x)/(...
*July 20, 2011*

**Computer Science - MATLAB**

This is the tutorial it's making a reference to h t t p : / / w w w . m a t h w o r k s . c o m / h e l p / t e c h d o c / r e f / r e d u c e v o l u m e . h t m l at least I think it is >_>
*July 20, 2011*

**Computer Science - MATLAB**

Create a stacked contour plot of the MRI data, showing the first, eight, and twelfth layer of the data. An MRI visualization example is shown in the help tutorial. Copy and paste the commands into an M-file and run the example. Be sure to add the clf command before drawing ...
*July 20, 2011*

**Computer Science - MATLAB**

got it <_< forgot the dot and got rid of the axis tight disp('Problem 13.11') x=-2*pi:pi/50:2*pi; y=sin(x); [X,Y]=meshgrid(x,y); z=sin(X)*cos(Y); h=surf(z); set(gca,'nextplot','replacechildren'); shading interp colormap(jet) for a=0:pi/100:8.25*pi...
*July 20, 2011*

**Computer Science - MATLAB**

Same thing. I wounder if I'm suppose to be using the surfz function and not some other 3 dimensional plotting function?
*July 20, 2011*

**Computer Science - MATLAB**

I tried both and both results leave me with the same result, It just flashes real quick and then turns white... I even tried a=0:pi/1000000000:8*pi, it stays for a little bit longer but then turns white.... I think it's an issue with something else... what I'm not ...
*July 20, 2011*

**Computer Science - MATLAB**

Thanks MathMate. Print plotting sounds awful O_O. What you suggested was correct and this code worked disp('Problem 13.9') x=[-2*pi:.00001*pi:2*pi]; a=0; y=sin(x-a); g=plot(x,y); title(sprintf('sin(x-%.2f)\n',a)) grid on; set(g,'EraseMode','xor'...
*July 20, 2011*

**algebra**

=x^5-4x^3+9x^2-2x^3+8x-18 simplify = x^5-6x^3+9x^2+8x-18
*July 19, 2011*

**Writing**

What are the three arguments in a nut shell?
*July 19, 2011*

**Calculus**

The number of people taking the bus at price p dollars per ticket is given by x=5000(5-p)^1/2. For what value of P is the demand unitary?
*July 19, 2011*

**Computer Science - MATLAB**

also note that i don't have pause there at the end of my loop i just added that in there when i was trying to slow down the animation to see if something was wrong but nothing was found
*July 19, 2011*

**Computer Science - MATLAB**

In a problem I had to create a animation of the function sin(x-a) were a ranged from 0 to 8pi Code: x=[-2*pi:.00001*pi:2*pi]; a=0; y=sin(x-a); g=plot(x,y); grid on; title('sin(x-0)') set(g,'EraseMode','xor') while a<=8*pi a=a+.1*pi; y=sin(x-a); set(g...
*July 19, 2011*

**Thank You MathMate**

Thank you for assisting me with my MATLAB question. If I posted this on the actual question you never would of seen it. What you suggested to do worked and produced the results I was suppose to get. I wanted to say thank you. And a grid_size of 500 seems to produce more stable...
*July 19, 2011*

**Programing**

apparently I was skipped by accident 13.2 A quadratic Julia set has the form z(n+1)=z(n)^2+c The special case where c=-.123+.745i is called Douday's rabbit fractal. Follow example 13.1, and create an image using this value of c. For the Madelbrot image, we started with all...
*July 17, 2011*

**MATLAB**

13.2 A quadratic Julia set has the form z(n+1)=z(n)^2+c The special case where c=-.123+.745i is called Douday's rabbit fractal. Follow example 13.1, and create an image using this value of c. For the Madelbrot image, we started with all z-values equal to 0. You'll need...
*July 16, 2011*

**algebra 2**

f^(-1)(x) = (ln(x-2))/(ln(10))
*July 16, 2011*

**Math**

120
*July 16, 2011*

**world regional geography**

Not the Dutch!
*July 11, 2011*

**algebra II**

How many solutions does the equation x^2 - 2x - 2 = 0 have?
*July 3, 2011*

**Algebra II**

Simplify (2x^-2y^2/3xz^-2) times (4xzy^-3/9xyz)^-1
*July 1, 2011*

**Calculus**

find the rate of change dy/dx for y=x(1-x); x=-1
*June 26, 2011*

**Algebra**

Solve the system of equations by graphing. Then classify the system. x+y=11 x-y=-5
*June 7, 2011*

**physics**

If a ball is thrown upwards at 20 ft/sec, the height h after t seconds is given by h = -16t^2 + 20t.
How many seconds does it take for the ball to reach its maximum height, and what is this height?
*May 22, 2011*

**literature**

which of the following terms descrides the period of the 1920s?
*May 17, 2011*

**Lit Class**

not d
*May 16, 2011*

**algebra**

Thanks for the input.
*May 15, 2011*

**algebra**

If the cost of a cell phone has decreased 400% during the past 10 years, does that correspond to a cost decrease of four times?
*May 15, 2011*

**Chemistry**

A 1.00 L sample of a pure gas weighs 0.785 g and is at 733.4 torr and 29.2 degree celcius. a) what is the molar mass of the gas? b) if the volume of the temperature are kept constant while 0.400 g of the same gas are added to that already in the container, what will the new ...
*May 11, 2011*

**my question was answered wrong**

In how many different ways can you arrange three 4x8 tiles to form a rectangle?
*May 10, 2011*

**MATH!**

The sum of two prime numbers is the prime number 89,563. Find the smaller of the two addends. I attempted the problem but I'm not sure if it is right. 89,561 is a prime number and so is 2. So is the answer 2?
*May 6, 2011*

**Math**

Okay I understand. I just wasn't sure if rearranging the tiles (putting them in a different order) would be considered another rectangle. But I get it now. With the answer being 1. Thank you.
*May 6, 2011*

**Math**

So mixing them up doesn't make it another option? I'm assuming that this problem is a trick question.
*May 6, 2011*

**Math**

But I don't know for example,say you labeled each tile A, B, and C. Is there an option to lay them in different orders, or does that not matter because they are all the same tile? Also is another way, to lay it down as a coloum instead of a row?
*May 6, 2011*

**Math**

In how many different ways can you arrange three 4x8 tiles to form a rectangle? I don't know how to do this.
*May 6, 2011*

**algebra**

tana rode a boat 1 km upstream in and hour. rowing at the same rate, she made the return trip downstream in 15 minutes. find the rate of the current
*April 29, 2011*

**Psychology**

i think your write with the answer being c
*April 25, 2011*

**global finance**

Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation and note the specific events as they might apply to the information from your chapter. You will use this data to form the basis of your analysis. ...
*March 25, 2011*

**Business**

Best Answer - Chosen by Voters The bank's security interest has attached, but it has not perfected its security interest. Typically in a closing for a secured loan, the borrower executes and delivers the note and security agreement and then the bank authorizes the release ...
*March 15, 2011*

**chemistry**

You are given a bottle of household vinegar of volume 500 cubic centimeters. Design an experiment to determine its concentration. Add illustrations
*March 12, 2011*

**finance**

Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation and note the specific events as they might apply to the information from your chapter. You will use this data to form the basis of your analysis. ...
*March 5, 2011*

**finance**

Please review the following case and use it as the basis for your analysis for this unit. Pay careful attention to the situation and note the specific events as they might apply to the information from your chapter. You will use this data to form the basis of your analysis. ...
*March 5, 2011*

**interview question**

it should be l!
*March 3, 2011*

**chem**

which compound will dissolve better in water, NaCl or CsCl...explain!!! *hint* check eletronegativity!
*March 3, 2011*

**Pyschology**

what does this mean? psychology is uniquely qualified to help intervene? I also would like you to comment on what are at least two key ways psychology is uniquely qualified to help intervene.
*February 21, 2011*

**social studies**

How does geography affect development of a city
*February 19, 2011*

**Psychology**

I need help. Can anyone tell me about twins studies.
*February 15, 2011*

**science 6 helppppppppppppppppppp**

two identical batteries are connected to different circuit. explain how it is possible for the batteries to supply different amount of power? is it because the another batteries might have more power??
*February 13, 2011*

**Town View**

How would a drop of water effect the freezing point of acetic acid?
*February 3, 2011*

**math 9 helppp**

how about this equation? is this right?? 7x=380 x=55 55-3.50 =51.5
*January 27, 2011*

**math 9 helppp**

concert tickets are for sale online. there is a handline fee of $3.50 added to the cost of every tickets. if you uy 7 tickets and the total comes to $385 what is the cost of one ticket before the handling fee is added? the answer is $51.50 but i got 51 i dun know why i solve ...
*January 27, 2011*

**math**

a rope is 120 ft long and the water is 20 ft deep. how far is the anchor from a point directly below the boat?
*January 26, 2011*

**social study 9 **

difference between hudsons bay company and north west company (what did they do? and how they NWC and the HBC company operated?
*January 25, 2011*

**Statistics for social sciences**

i don't know
*January 24, 2011*

**Algebra**

Isosceles triangle,two angles have the same measure. Determine the measure of the third angle in an isosceles triangle,if the third angle is 10 more than one-half of either of the equal measurements
*January 19, 2011*

**algebra**

2x^3+x^2+8x+4
*January 11, 2011*

**Physics**

A 0.700 kg object attached to the end of a 0.560 meter wire revolves uniformly on a flat, frictionless surface. a) If the object makes three complete revolutions per second, what is the force exerted by the wire on the object? b) What is the speed of the object?
*January 6, 2011*

**Cal 1**

The top and bottom margins of a poster are each 12 cm and the side margins are each 8 cm. If the area of printed material on the poster is fixed at 1536 cm^2, find the dimensions of the poster with the smallest area.
*December 8, 2010*

**algebra**

Please I'm stuck!!!!! A person is driving a car on a straight road. The graph shows the distance in y miles that the individual is from home after x hours. the graph has the following points (1, 40) and (3, 90) Find the slope intercept of the line y = ____x + ______ How ...
*December 6, 2010*

**College algebra**

A person is driving a car on a straight road. The graph shows the distance in y miles that the individual is from home after x hours. the graph has the following points (1, 40) and (3, 90) Find the slope intercept of the line y = ____x + ______ How fast is the car traveling? ...
*December 6, 2010*

**College algebra**

Thank you so much. I can't believe it was so simple..:):)
*December 6, 2010*

**College algebra**

a company finds it can produce 15 heaters for $4300, while producing 20 heaters costs $5500. Express y, as a linear function of the number of heaters, y. Determine the cost to produce 30 heaters. y = _________ Cost to produce 30 heaters $_________ Help I'm not sure how to ...
*December 6, 2010*

**Math Probability**

1p
*December 3, 2010*

** VB programming**

This problem is creating code for a line chart. - Write a program to create the line chart. Use Table in 9.6: Table 9.6] Two -year college enrollments (in thousands). 1960 1970 1980 1990 2000 ---------------------------------- Male 283 1375 2047 2233 2398 Female 170 945 2479 ...
*December 1, 2010*

**Programming **

Thank you so very much. I got the program to run.
*November 28, 2010*

**science**

what is the standard for measuring volumes of fluids
*November 27, 2010*

**college**

You're correct move is suppose to be more. Thank you so much for explaining this to me. It's very helpful.
*November 23, 2010*

**college**

Please explain with complete step by step instructions. #8)One type of lawn fertilizer consists of a mixture of nitrogen, phosphorus and potassium. An 80lb sample contains 8 move lbs of nitrogen and phosphorus than potassium. There is 16lb more potasssium than 5 times the ...
*November 23, 2010*

**college Algebra**

Please explain with complete step by step instructions. #8)One type of lawn fertilizer consists of a mixture of nitrogen, phosphorus and potassium. An 80lb sample contains 8 move lbs of nitrogen and phosphorus than potassium. There is 16lb more potasssium than 5 times the ...
*November 22, 2010*

**college algebra**

Okay. I understand. Thank you very much...
*November 22, 2010*

**college algebra**

Using Systems of Equations. Please help!!! I'm not sure what steps to do, to work this problem. #7) Five hundred tickets were sold for a school play, which generated $3560 in revenue. The prices of the tickets were $5 for children, $7 for students, and $10 for adults. ...
*November 22, 2010*

**VB 2008 Programming**

Also I'm a little confused with your suggestion. Could you restate it a little differentlly for me? Thanks.
*November 20, 2010*

**VB 2008 Programming**

I've revised my code and am including it now. I've tried to debug it, but am stuck on trying to get it to run properly. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnOffice.Click 'Randomlly select office members ...
*November 20, 2010*

**VB 2008 Programming**

This is my code : Public Class frmOffice Private Sub btnDisplay_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplay.Click Dim randomNum As New Random Dim name1, name2, name3 As String Dim sr As IO.StreamReader = IO.File.OpenText("MEMBERS....
*November 20, 2010*

**VB 2008 Programming**

HELP!!!! I'm not sure How to get started nor the steps to design this project. The file MEMBERS.TXT contains the names of the 100 members of a club. Write a program to randomly select people to serve as President, Treasurer, and Secretary. Note: A person cannot hold more ...
*November 20, 2010*

**Visual Basic 2008 Programming**

Thank you MathMate. You were a great help. I was able to finish creating the program and it works correctly..
*November 16, 2010*

**Visual Basic 2008 Programming**

Okay this is my Code: My coding is quite a bit off. Help me please. Thanks. Public Class Form1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDisplay.Click Dim AmountCompound As Integer = 1000 For AmountSimple As Integer = 1 To...
*November 16, 2010*

**Visual Basic 2008 Programming**

Help! I'm not sure how to start or how calculate. This is the project. Using For Next Loops. - When $1000 is deposited at 5 percent simple interest, the amount grows by $50 each year. When money is invented at 5 percent compound interest, then the amount at the end of each...
*November 16, 2010*

**Physics**

Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power cus she weights the ...
*November 15, 2010*

**Physics**

Two People who weigh the same climb a flight of stairs. The 1st person climbs the stairs in 30s, and the 2nd person climbs them in 40s. Which person does more work? which uses more power. - I would personaly think the 2nd person does more work and power cus she weights the ...
*November 15, 2010*

**College Algebra**

you are correct. I understand it now. You are such a fantastic help :)
*November 14, 2010*

**College Algebra**

Yes this would be very simple, except this is a logarithim equation. The answer you gave isn't correct either. the e actually represect ln.
*November 14, 2010*

**College Algebra**

Problem: Use Common or Natural Logarithims to solve the exponential equations symboliclly. 2e^7x+4=4 (Round to four decimal places) I tried solving this way 2e/2^7x+4=4/2 e^7x+4=2 ln e^7x+4=ln 2 7x+4=ln 2 7x+4-4=ln 2-4 7x=ln 2-4 7x/7=ln 2-4/7 x=ln 2-4/7 then I at a lose at ...
*November 14, 2010*