# Posts by Lee

Total # Posts: 926

calculus
find equations of the tangent lines to the curve y=x/(x+5) that pass through the point (2,7).

probability
This is exactly how the question is written on the test. Does that mean it can't be answered since we don't have part of the problem?

Math
I can't figure out this pattern: 1, 1, 4, 3, 9, 6, 16, 10, 25, 15, __, __, __, __

math
Thanks. That's what I thought too.

math
Every week Bradley doubles his card collection. He started with 2 cards. How many cards will Bradley have after 6 weeks?

Science
I need help with the experimental design of my project. I am testing to see if the the position (chin height, chest height, over head) of the basketball affects the number of shots that go in the basket. What is the independent variable and what are the levels of the ...

Algebra
I don't get this.

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

math
you first find the number pattern

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?

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!

Algerbra Fixed
A teacher did this problem with us in class but I dontn get it please explain. 2xy + 6 ------- 3y + 4x

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

algebra
2xy + 6 -------- 3y -4z if x= 2, y=6 anwser 3 this is a question from in class i don't get. Could you explain to to me

engineering
what is civil engineering?

algebra
Find the y intercept for the equation -2x+2=4

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 ...

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

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...

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.

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?

MATLAB
nevermind

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 ...

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 ...

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)/(...

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 >_>

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 ...

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...

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?

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 ...

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'...

algebra
=x^5-4x^3+9x^2-2x^3+8x-18 simplify = x^5-6x^3+9x^2+8x-18

Writing
What are the three arguments in a nut shell?

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?

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

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...

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...

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...

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...

algebra 2
f^(-1)(x) = (ln(x-2))/(ln(10))

Math
120

world regional geography
Not the Dutch!

algebra II
How many solutions does the equation x^2 - 2x - 2 = 0 have?

Algebra II
Simplify (2x^-2y^2/3xz^-2) times (4xzy^-3/9xyz)^-1

Calculus
find the rate of change dy/dx for y=x(1-x); x=-1

Algebra
Solve the system of equations by graphing. Then classify the system. x+y=11 x-y=-5

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?

literature
which of the following terms descrides the period of the 1920s?

Lit Class
not d

algebra
Thanks for the input.

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?

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 ...

In how many different ways can you arrange three 4x8 tiles to form a rectangle?

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?

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.

Math
So mixing them up doesn't make it another option? I'm assuming that this problem is a trick question.

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?

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

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

Psychology

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. ...

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 ...

chemistry
You are given a bottle of household vinegar of volume 500 cubic centimeters. Design an experiment to determine its concentration. Add illustrations

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. ...

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. ...

interview question
it should be l!

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

Math
A hemisphere with diameter 70cm

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.

social studies
How does geography affect development of a city

Psychology
I need help. Can anyone tell me about twins studies.

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??

Town View
How would a drop of water effect the freezing point of acetic acid?

math 9 helppp

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 ...

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?

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?

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

algebra
2x^3+x^2+8x+4

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?

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.

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 ...

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? ...

College algebra
Thank you so much. I can't believe it was so simple..:):)

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 ...

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 ...

Programming
Thank you so very much. I got the program to run.

science
what is the standard for measuring volumes of fluids

college
You're correct move is suppose to be more. Thank you so much for explaining this to me. It's very helpful.

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 ...

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 ...

college algebra
Okay. I understand. Thank you very much...

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. ...

Algebra
21

VB 2008 Programming
Also I'm a little confused with your suggestion. Could you restate it a little differentlly for me? Thanks.

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 ...

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....

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 ...

Visual Basic 2008 Programming
Thank you MathMate. You were a great help. I was able to finish creating the program and it works correctly..

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