Monday
September 1, 2014

Posts by Catherine


Total # Posts: 361

Math
Jake is planning to fence his garden. His garden is 10 feet long and 5 feet wide. What is the amount of area Jake wants to fence? Is this a perimeter or area question? That's all I need.
September 18, 2011

Calculus
Yes, you are right Thanks, I just found it! =)
September 15, 2011

Calculus
Please help? Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).
September 15, 2011

Calculus
Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find the formula for F(a).
September 14, 2011

Mechanics
A tension test was performed on a steel specimen having an original diameter of 12.5 mm and gauge length of 50 mm. Using the data listed in the table, plot the stress–strain diagram, and determine approximately the modulus of toughness. Use a scale of 20 mm-50 MPa and 20 ...
September 10, 2011

Calculus
Sorrr, I didn't ask what to find. I have to Find the formula for F(a).
September 10, 2011

Calculus
Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis).
September 10, 2011

Calculus
Let F(a) be the area between the x-axis and the graph of y=x^2cos(x/4) between x=0 and x=a, for a>0 (consider the area to be negative if the graph lies below the axis). Find a formula for F(a).
September 9, 2011

Math
what algebra
September 4, 2011

Geography
I didn't find much... But I did find the Balcones Escarpment! Is that right?
August 30, 2011

Geography
What are some major landforms by Wichita Falls, Texas?
August 30, 2011

math
I think it's 44 if you mean add the 2 digits together to get the summ.
August 24, 2011

MATH HELP!!!!!!! :(
This is a riddle, and I'm supposed to find a 5-digit number from it..... My thousand's digit is the first that is perfect, but if you're not happy with that, it's also the product of the first two primes. My units digit is the odd of those two primes, and if ...
August 24, 2011

Coordinate system
XComplete the table of values for the equation 8x+2y=80 xy 0? ?0 2? that is what I got so far, please help me get the rest
July 19, 2011

Linerar Equations in 2 Variables
Complete the ordered pair for the equation y=-10x+18 I have one of the ordered numbers given to me by my instructor, I have to come up with the first one, this is excactly hwo he gave it to me, but I really dont understand this...Can someone please help me understand it better...
July 19, 2011

Basic Algebra
A new cruise ship line has just launched 3 new ships: the Pacific Paradise, The caribbean paradise, and the mediterranean paradise. The carribean paradise has 32 more deluxe stateroooms than the pacific paradise. The Mediterranean paradise has 37 few deluxe staterooms than ...
July 16, 2011

Basic Algebra
Thanks for the help :)
July 16, 2011

Basic Algebra
solve the equation m, and check the solution: 5/6x-1/5x+4=7/10x
July 16, 2011

Basic Algebra
solve the equation: 16((3x+7)=4(12x+8)
July 16, 2011

Basic Algebra
solve. Cx+Hy=M, for x
July 12, 2011

Basic Algebra
A box to hold pencils measures 5.8 inches by 5 inches by 4 inches high. Find the volume of the box.
July 12, 2011

Basic Algebra
if 5 is added to a number and the sum is tripled, the result is 27 more than the number. Find the number
July 10, 2011

Basic Algebra
solve the equation & check your solution: 2/5x-9/25x=5
July 9, 2011

Basic algebra
Solve the equation: 3(-2x+1)=-5(x+1)
July 9, 2011

Basic Algebra
I have to solve the following equation and check my work. Not sure how to do this if someone oculd help me out. The problem is (17b-5)-8(2b+4)=-6
July 9, 2011

Basic Algebra
I am having a hard time trying to figure out this problem, if someone could help me...I'd appreciate it: I have to solve the problem 7x-(6x+4)=4
July 9, 2011

trig
find the least positive value of @. sec (4@+10)cos(3@+17) @=theta
May 23, 2011

Physics Year 7 (Help please)
Isabella drops a chunk of iron of mass m from the roof of her high school and it accelerates at g. Then she ties two chunks of iron together of mass 2m. Show that when she drops the double chunk, the acceleration of fall is also g. Thank you :)
May 15, 2011

Science
What two major factors determine the size of a star? Is it a) Gravity and Mass OR b) The force of gravity pulling in trying to make the star as small as possible and the outward pressure from the radiation generated in the core trying to swell it up. Thanks :) Because I'm ...
May 14, 2011

Science
By what factor would your weight change if the earth's diameter were doubled and its mass were also doubled? Thanks :)
May 14, 2011

Science
What are two competing effects that determine the size of the star? Please keep the answer short and thank you.
May 14, 2011

Physics
Just wanted to thank you for answering all my questions even though I was clearly lost during most of this process... I finally got it... Thanks =D
May 8, 2011

Physics
Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
May 8, 2011

Physics
So is the period 8222 s? I still don't get why the ansser for the aphelion is wrong...
May 8, 2011

Physics
Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
May 8, 2011

Physics
Sorry for reposting this but I'm still confused with the last part... You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
May 8, 2011

Physics
For a scene in a movie, a stunt driver drives a 1.50x10^3 kg SUV with a length of 4.35 m around a circular curve with a radius of curvature of 0.333 km. The vehicle is to be driven off the edge of a gully 10.0 m wide, and land on the other side 2.96 m below the initial side. ...
May 8, 2011

Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...
May 8, 2011

Physic
A 3.8 kg object is supported by an aluminum wire of length 1.9 m and diameter 2.2 mm. How much will the wire stretch?
May 7, 2011

Physics Question
Here is a demonstration Pascal used to show the importance of a fluid's pressure on the fluid's depth : An oak barrel with a lid of area 0.17 m^2 is filled with water. Along, thin tube of cross-sectional area 4.7×10−5 m^2 is inserted into a hole at the ...
May 7, 2011

Physics
I'm sorry, I don't understand, you mean this equation: P = 2pi sqrt[R^3/(GM)] won't a be 12,345?
May 7, 2011

Physics
Thanks, I now get 5481 seconds for the period, then I have to multiply that by 1.5 right? I get 8222 s When you say substitute a for R, you meant for the equation of the aphelion?
May 7, 2011

Physics
I must be doing something wrong because I typed the answers for a second time and they are wrong, I have only one attempt left, can you please check what I did wrong? For the period what I did was P = sqrt(R^3(4pi^2)/GM) P = sqrt ((6720^3(4pi^2)/(6.674E-11(5.9742E24))) P = 0....
May 7, 2011

Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...
May 7, 2011

Physics
I must be doing something wrong because I typed the answers for a second time and they are wrong, I have only one attempt left, can you please check what I did wrong? For the period what I did was P = sqrt(R^3(4pi^2)/GM) P = sqrt ((6720^3(4pi^2)/(6.674E-11(5.9742E24))) P = 0....
May 6, 2011

Physics
So will the aphelion be the perihelion + 2a = 31,410 km?? In order to calculate the period, won't I need the velocity?
May 6, 2011

Physics
I'm sorry, you are right, I omitted some words, here is the question: You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International ...
May 6, 2011

Physics
You have been sent in a small spacecraft to rendezvous with a space station that is in a low circular Earth orbit, say, with a radius of 6,720 km, approximately that of the orbit of the International Space Station. Due to mishandling of units by a technician, you find yourself...
May 6, 2011

Social Studies
Oh....... true. Thanks!!
May 4, 2011

Social Studies
Um..... I thought it was because he was the symbol of preventing wildfires, but I thought it had to be bigger than that. I know he is trying to promote stopping wildfires to save our ecosystem, but the popularity question confuses me. I mean, I pretty much know, but I can'...
May 4, 2011

Social Studies
Why has Smokey the Bear been popular for so long? What does he try to promote?
May 4, 2011

Physics
A beam, B1, of mass M1 = 0.6887 kg and length L1=1 m is pivoted about its lowest point at P1. A second beam, B2, of mass M2=0.200 kg and length L2=0.200m is suspended (pivoted) from B1 at a point P2, which is a horizontal distance d=0.550, from P1. To keep the system at ...
May 2, 2011

MGT 330
Extrinsically motivated
May 1, 2011

Physics (please help)
A planet is in circular orbit about a remote star, far from any other object in the universe. Which of the following statements is true? a. None of the other statements are true. b. There is only one force acting on the planet. c. There are two forces acting on the planet and ...
April 30, 2011

English-CHECK PLEASE
Ohh.............. Thanks! i get it!
April 15, 2011

English-CHECK PLEASE
Ok, I figured this out (I think) but can you please check? Don't worry. I can carry the tent all by myself because it is so light. I do not even need a lantern it is so light outside. In these sentences, the word "light" is used as a: A:homophone B:homonyme C:...
April 15, 2011

Calculus (urgent!!)
A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t is in seconds. A)Find the speed of the particle. Speed = ____________ (include units) B)Find the first positive time when the particle comes to a ...
April 15, 2011

Calculus (pleas help!!!)
Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in words and sketch how the circle is traced out, and use this to answer the following questions. (a) When is the parameterization tracing ...
April 15, 2011

Calculus (please help!!!!)
Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in words and sketch how the circle is traced out, and use this to answer the following questions. (a) When is the parameterization tracing ...
April 14, 2011

Calculus (urgent!!)
Ok..I found the problem with my first part, I accidentally typed cost(t)^2... Ok I'm still stucked with the last two parts, I don't know what to do with them....
April 14, 2011

Calculus (urgent!!)
A particle moves with its position given by x=cos(2t) and y=sin(t), where positions are given in feet from the origin and time t is in seconds. A)Find the speed of the particle. Speed = ____________ (include units) B)Find the first positive time when the particle comes to a ...
April 14, 2011

Calculus (please help!!!)
I typed 0 for the time, since it was at (0,1) when it started, and slected yes for part c, I have part A and B wrong, I don't know how to write the intervals from part A and I didn't see any counter-clockwise motion... please explain...
April 14, 2011

Calculus (please help!!!)
Consider the parameterization of the unit circle given by x=cos(4t^2−t), y=sin(4t^2−t) for t in (−InF, INF). Describe in words and sketch how the circle is traced out, and use this to answer the following questions. (a) When is the parameterization tracing ...
April 14, 2011

Calculus
What I thought that I had to do was to take the derivative, (2/x)/2x and then plug in 2... and that's how I got 1/4, but that's not the answer, what do I have to do?
April 13, 2011

Calculus
I thought that it was 1/4 but that's now the answer....
April 13, 2011

Calculus
Find the limit: lim x-> 2 ln(x/2)/ (x^2−4) Can someone help me with this?
April 13, 2011

English
I just typed the passage. My assignment is to make a high level (8th grade) question for the passage. What do you mean by my analysis?
April 13, 2011

English
What are some high level questions about the moon? Please put at least 4. What are some high level questions for this passage? There was once a sheperd who loved his sheep but was growing tire of caring for them. One hot day, he sat down under a tree and pondered what to do ...
April 13, 2011

English
thanks!
April 7, 2011

English
What are the steps for editing?
April 7, 2011

Calculus (urgent!!)
Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if you are asked to ...
April 6, 2011

Calculus (pleas help!!!)
Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if you are asked to ...
April 5, 2011

Calculus (pleas help!!!)
Please answer the following questions about the function f(x)=e^(-0.5x^2) Instructions: If you are asked to find x- or y-values, enter either a number, a list of numbers separated by commas, or None if there aren't any solutions. Use interval notation if you are asked to ...
April 5, 2011

Calculus
Find the global maximum and minimum values of f(t)=4t/(2+t^2) if its domain is all real numbers?
April 5, 2011

Math
8.
March 21, 2011

Math-REALLY CONFUSED
On the worksheet it showed an example, and for a quadrilateral it showed only 1 diagonal, so it didn't do all the diagonals or it would be 2, so I did only the diagonals from one corner, which is 4. I just now divided 900 by 7,(using a calculator) and the answer was 128....
March 21, 2011

Math-REALLY CONFUSED
Thanks. Yeah I tried 900 divided by 7, but it kept going on and on and on and on and on. Unless I calculated wrong.
March 21, 2011

Math-REALLY CONFUSED
Ok, so this worksheet says that a regular heptagon has 7 sides. So, would it have 7 angles, 4 diagonals, 5 triangles, and that the angle sum of the figure is 900 degrees. Am I right on those? But then it says to find the "Measure of each angle". Wouldn't it would...
March 21, 2011

separation of variables
if dy/dx=-3y and y=1 when t=0, what is the value of t for which y=1/3?
March 19, 2011

separation of variables
find an equation of the curve that passes through the point (1,1) and whose slope at (x,y) is y^2/x^3
March 19, 2011

Calculus (pleas help!!!)
A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=2. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally, find the y-value for ...
March 16, 2011

Calculus Please Help
I see what is wrong with my equation... now I have (-2x+y^2)/(3y^2-x2y) and for the second part I tried to plug 1 for x and all the other values for y and then in the third part I plugged 2 for y and 0.96 for x and I got them all wrong: my values are: 0.96 = -1.2765 0.98= -1....
March 15, 2011

Calculus Please Help
In the first part... I got (-2x+y^2)/(3y^2+x2y) but apparently that's wrong which will make everything else wrong.... I just need to know how to do that part right...
March 15, 2011

Calculus Please Help
A) If x^2+y^3−xy^2=5, find dy/dx in terms of x and y. dy/dx=________ B) Using your answer for dy/dx, fill in the following table of approximate y-values of points on the curve near x=1 y=2. 0.96 ______ 0.98 ______ 1.02 ______ 1.04 ______ C) Finally, find the y-value for...
March 15, 2011

Calculus
But that's not the answer...
March 15, 2011

Calculus
I solved and I got: (9-lny)/(x((x/y)+6y^5))
March 15, 2011

Calculus
Find dy/dx in terms of x and y if xlny+y^6= (9)lnx
March 15, 2011

Calculus
Find dy/dx in terms of x and y if xlny+y^6= (9)lnx
March 15, 2011

Calculus
Oh never mind I got the answer... -6(cosw^5sinw+w^5sin(w^6)) just missing the ^5
March 9, 2011

Calculus
Find the derivative of y=cos^6w+cos(w^6) The answer I have is -6(cosw^5sinw+wsin(w^6)) but it's not right...
March 9, 2011

Calculus
But why is b -2?
March 9, 2011

Calculus
How did you get the -2 at the beginning?
March 9, 2011

Calculus
Find the derivative of (b/(a+z^2))^2 Assuming that a and b are constants...
March 9, 2011

Math-CHECK PLEASE
Thanks so much!! :D
March 8, 2011

Math-CHECK PLEASE
Which of the statements is ALWAYS TRUE? A-A right triangle is a scalene triangle. B-An equilateral triangle is an isosceles triangle. C-An isosceles triangle is an obtuse triangle. D-A right triangle is an acute triangle. I got either A or D. I don't know. Also, if angle A...
March 8, 2011

3rd grade mathath
I think that you have to move 10 degrees, but I am not sure.
March 8, 2011

math HELP!!
If 4/8 is meant to simplify to 1/2, so yes, they are all simplified. If 4/8 and 1/2 are seperate, then no, because 4/8 simplifies to 1/2.
March 8, 2011

Math
Oh. ok. thanks.
March 7, 2011

Math
A trapezoid has to have one pair of parallel lines, right? If a shape isn't a trapezoid because it has no parallel lines, no equal sides, but has four sides, what is it? The question wanted the best descriptive name.
March 7, 2011

6th grade math
The height is 8 meters, because L times W times H equals volume, and 12 times 6 equals 72, and 576 divided by 72 is 8.
March 7, 2011

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