# Posts by Catherine

Total # Posts: 443

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

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

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

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

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

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

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

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

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 :)

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 ...

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

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

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

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 ...

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

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 ...

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 ...

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. ...

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...

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?

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 ...

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

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?

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....

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...

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....

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

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 ...

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...

Social Studies
Oh....... true. Thanks!!

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'...

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

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 ...

MGT 330
Extrinsically motivated

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 ...

Ohh.............. Thanks! i get it!

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:...

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 ...

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 ...

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 ...

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....

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 ...

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...

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 ...

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?

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

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

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?

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 ...

English
thanks!

English
What are the steps for editing?

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 ...

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 ...

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 ...

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

Math
8.

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....

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.

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...

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

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

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 ...

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....

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...

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...

Calculus

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

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

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

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

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...

Calculus
But why is b -2?

Calculus
How did you get the -2 at the beginning?

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

Thanks so much!! :D

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...

I think that you have to move 10 degrees, but I am not sure.

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 separate, then no, because 4/8 simplifies to 1/2.

Math
Oh. ok. thanks.

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.

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.

I guess. Hm. Life.... wife....... stife.......... pife.... gife...... rife.........

But this is a letter to my mom... it's supposed to thank her for all the things she's done.

Um........ Not really, because I want words that are sentimental-ish.

I couldn't find anything.

What is a word that ryhmes with life, but goes with the words: love and life?

fact and opinons
I think that it is an opinion, because if you ask around, some people may not say so.

Social Studies
THANK YOU!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! SO FREAKING MUCH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Social Studies
What are some things that start with or have x and y in them that can be found in Sudan? I've looked EVERYWHERE. Except Sudan literally.

Social Studies-URGENT
Thanks.

Social Studies-URGENT
I'm doing a project for social studies, and I want to know if the African Queen Lily grows in Sudan. Please help!

Anita says that the plus sign + forms 2 pairs of verticle angles. Charles says it forms two pairs of congruent angles. Who is correct?

Math
If something is \$99.99, and it is 55% off, would the price be \$44.99 or \$45.00? If something is \$67.99, and it is 25% off, would the percent off be \$16.99 or \$17.00?

Math
ya........ i put the wrong thing.

Math
oops...... wrong question.

Math
Can you just help me? So, if something is \$99.99, and it is 55% off, would the price be \$44.99 or \$45.00? And of something is \$67.99, and is 25% off, would the price be \$16.99 or \$17.00?

Chemistry
What is the product of the following reaction: Mn(s) + Cu(NO3)2 -> I just want to make sure if it's Mn+2 + Cu(s) or if there's no reaction...

Geometry
Thanks though.

Geometry
Hmph.

Geometry
Are perpendicular lines the same as intersecting lines?

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