# Posts by samantha

Total # Posts: 1,743

Physics
At time t=0 a grinding wheel has an angular velocity of 26.0 rad/s. It has a constant angular acceleration of 25.0 rad/s^2 until a circuit breaker trips at time t = 2.50 s. From then on, the wheel turns through an angle of 440 rad as it coasts to a stop at constant angular ...

MATH
well i think that is called the y-intercept form

MATH
How do you write an equation in standard form? Ex.How would you write this in standard form? y+1=x+2

5th Grade student teacher: Needs ur help....
What fun activity could I use to to teach 5th grade students about the Constitution?

9th
6a+4 = -8 6a = -8-4 a = -12/6 a = -2

The sum of two numbers times a third number is equal to the sum of each added number times the third number. For example 4 * (6 + 3) = 4*6 + 4*3.

Calculus
Use the quotient law where you find the derivative of f(x)*g(x)-the derivative of g(x)*f(x) and the whole thing divided by g(x). (x+2)(x^3+x-2)' - (x+2)'(x^3+x-2) ---------------------------------- (x^3+x-2)^2 (x+2)(3x^2+1) - 1(x^3+x-2...

Damon
Thank you so much for all the calculus help! I felt more prepared for the exam!

Calc again sorry
4) The graph of y = (x)/(1+25x^2) for x is greater than or equal to 0 has a horizontal tangent at x = what. So what I did was find the first derivative. I did the quotient rule and ended up with x50x - 1+25x^2 --------------- (1+25x^2)^2 I equated that with 0 but I don't ...

Calculus
lim(x->infinity) sqrtx sin(1/sqrtx) Someone please start me off. I don't know how to find the limits of trigonometric functions.

Calculus
How do you do this question. f(x) = (5x-1)/(2-3x), find f^(-1)(x). The answer is supposed to be (1+2x)/(5+3x). -------------------------------------- And can you please explain this one to me. Suppose that xy^(3)+2y^(2)+xy+2x^(3) = 0. Find the general expression for dy/dx. ...

Calculus
Don't you have to do implicit differentiation?

Calculus - Damon
Thanks so much!

Calculus - Damon
Find the line which passes through the point (0, 1/4) and is tangent to the curve y=x^3 at some point. So I found the derivative which is 3x^2. Let (a, a3) be the point of tangency. 3x^2 = (a3 - 1/4)/(a-0) I'm not sure how to solve for a. Yes, the point is (0,1/4) but it&#...

Calculus part 3 so sorry
y = e^2xsin3x Find the derivative. So I used the product rule and I got sin3x(e^2x)+cos^3x(e^2x). But the actual answer is sin3x(2e^2x)+cos^3x(3e^2x) Where the the 2 and 3 before the e come from?

Calculus Part 2
y = tan(sqrtx) Find dy/dx. So I found it and I got the answer as sec^2(sqrtx) but the answer is (sec^2(sqrtx))/2(sqrtx)...why? ---------------------------------- 2) Find the line which passes through the point (0, 1/4) and is tangent to the curve y=x^3 at some point. So I ...

1) Find the value of the lim(x->0) ((sin5x/sin2x)-(sin3x-4x)). I have no idea where to start so if someone could start it off for me it would really help. 2) If f(x) = (2x-3)/(5x+4) then what's the inverse of f(x) So I replaced x with y x = (2y-3)/(5y-3) Now am I ...

Calculus
Can someone explain the method of implicit differentiation to me. I know that we differentiation both sides of the equation with respect to x (I don't understand what they mean by with respect to x). And then y is a function of x...I don't understand what that means. ...

Calculus
Can someone explain the method of implicit differentiation to me. I know that we differentiation both sides of the equation with respect to x (I don't understand what they mean by with respect to x). And then y is a function of x...I don't understand what that means. ...

Math
22 layers

Math
Edward H. White, the first astronaut to spend 20 minutes free-floating in space, had to wear a special suit to protect him from heat, radiation, and particles. the number of layers in his suit is the number that is the only palindrome between 12 and 30. how many layers did his...

Science
are u saying that miles are bigger than km

Science
Which of these rates of speed is the fastest? 40 km/h 28 mi/h 19 knots/h I believe it is 40 km/h am I correct?

My body is covered with bony plates, but i am a fish. I am male, but i take care of all my young. i can swim, but i prefer to be carried by ocean currents. i look like a familiar land animal. What am i?

Verb form " to be"
How can I introduce or teach 3rd graders how to use the Correct Verb Form of the verb "to be"? I want to tell them when to use the words: am, is, are, was, and were....

US history
ok thank you,, do you know the flaws of the anti federalist views???

US history
Do you know the flaws of the federalist views

US history
Do you know the flaws of the federalist views? haha sorry...

US history
What are the flaws of the federalist views thank you guys so much!

US history
What were the key points to the Federalist viewpoint? Flaws?

US history
what/who did the antifederalists support? (what is diff. from them and the federalist beliefs)

US History
Was there anyone missing from the constitutional convention and if so who was missing from the constitutional convention? I didn't know some people were missing. Can some explain this?

Biology
What is 8 characteristics of animals?

1. Bruce, an appliance salesman, earns a commission of \$50 for each washing machine he sells and \$100 for each refrigerator. Last month he earned \$500 in commissions. Find all possibilities for the number of each kind of appliance he could have sold. 2. Luis has 95 cents in ...

Maybe just comparing the differences of the elements?

math problem
on monday Sheldon brewed 1 bottle of tonic, on tuesday he brewed 4 bottles, wednesday he brewed 9 and thursday 16. How many bottles did he brew on friday? Is it 30?? I'm 10 years old thanks

Math question
Thank you very much. Sorry

Math question

Math question
on monday Sheldon brewed 1 bottle of tonic, on tuesday he brewed 4 bottles, wednesday he brewed 9 and thursday 16. How many bottles did he brew on friday? Is it 30?? I'm 10 years old thanks

math
on monday he brewed i bottle of tonic tuesday he brewed 4 bottles, wed he brewed 9 and thursday 16. how many bottles did he brew on friday?

How can you make an input output division chart

Math
1808

Math
Jefferson Davis, President of the Confederate States of America, lived a square number of years. he died in 1889. The digits of the year in which he was born sum to 17. When was Jefferson Davis Born.

Science
Javier lives in an area where there is a lot of igneous rock. What is probably near by.

Science
I do not have shape or volume. You cannot see me, but i fill any container in which i am placed. I have weight, but you cannot hold me.What am I? Is it air?

Math
By how many degrees Fahrenheit do the frezzing point and the boiling point of water differ?

Science
I can live in both fresh water and salt water. When full grown, I migrate long distaces to my place of birth. What am I?

PreCalculus
Thanks! I didn't realize it could be so easy!

PreCalculus
I'm so confused... I've always been good at math but this year I'm just not getting it. But I know i can I always get help and a REAL explanation from the people on here so... A steel drum in the shape of a right circular cylinder required to have a volume of 100 ...

Science
Cells make tissue and tissue makes what?

math
Without actually graphing it, show that the graph of the equation x^3+y=x is symmetric with respect to the origin

Pre Calc
Without actually graphing it, show that the graph of the equation x^3+y=x is symmetric with respect to the origin.

Pre Calc
simplify the expression x-4 when x is less than 4

Science
Whats an example and non-example for cardiac muscle? Thanks again

Science
Whats a characterisic for axial skeleton? Thanks

Science
Whats an example and non-example of an axial skeleton?

supposed to be math
how many u.s. patents did Thomas Edison have? The number is 93 more than the number of pounds in half a ton. so basically i just need to know how many pounds are in half a ton

where can light travel, but not sound?

thanks

how many grams in a lb.

science
thanks

science
a cup of coffee, a 10 gallon aquarium, and a bottle of ginger ale were on the same table. on which container was there the greatest amount of air pressure

Science
thanks so much

Science
what is the largest organ human beings have

English
thank u greatly apreciated

English
what is a guide word and an entry word on a dictionary page. the one that i'm stuck on is what is a guide word

math
ok ya that could work. thanks ms sue!:)

math
im sorry that's what it says in my book its my last question. i know it doesn't make sense but tom im gonna get in trouble for not doing it, and there's no answer in the back of the book either for this one so im dead. that's exactly what it says i read it over.

math
sorry i wrote it wrong: Can you use a proportion to solve any ratio problem? if your answer is yes,which ratio problem would you not use a proportion to solve? if your answer in no, which ratio problem could you not use a proportion to solve?

math
Can you use a proportion to solve any ratio problem? If your answer is yes, which ratio problem would you not use a proportion to solve? if your answer is no, which ratio problem would you be able to solve?

math
thank u. :)

math
how would u do 60% of 65?

Math
its just at school for questions i can't ask for help, im fine with homework and all because ur here to explain but i don't have anyone right by my side for the tests. On the math tests the questions are really weird and stuff that wasn't even in our textbooks.

Math
lol ur so awesome!! im not so sure i did so well on my test last week though. i depended on u for all my homework, and for the test i had no help and i was frustrated. :(

Math
thanks Ms sue ur the best teacher ever! im for sure getting great in math this term! :D

anatomy
C- left common cartid artery It may be helpful to think of the aorta as a big hose coming out of the heart to supply the different parts of the body with oxygenated blood, that is fresh and high in oxygen. As that hose (Aorta) leaves the left ventricle it first gives a branch ...

language arts
I have to put together and present a strategy that is effective in the teaching of language arts at a specific grade level. What would a good idea be for around the grade 2 level? and why is it important?

health care
WATCH THE MOVIE BY MICHEAL MOORE! ITS GOOD but then again biased- but you can take your own views out of it!

math
n=30

english
nothing

Science
I grew in a cave, but i'm not alive. i began as water and minerals, but now i am solid. i grow upwards, but i never see the sky. What am i?

math
you take 10x10=100x10=1,000 then u take 1,000x500=500,000

Descriptive Writing
Colby gave her Romeo a lecture for the mean comment he made about her in front of his friends. Is this a simile, metaphor, personification or hyperbole?

science
What happens when you rub and ebonite stick with a wool cloth?

Algebra
I'm having trouble with inequalities. Basically my problem is about which way the sign goes. Here's an example.. X(X+1)>2 so then it becomes X^2 + X>2 Correct? Then X^2 + X - 2>0 then factor so it becomes (X+2)(X-1)>0 And so I end up with X>-2 and X>1...

Science
What is an example of aerobic organisms? Thank You

math
How do i find the area of a triangle? For example: A squared + b squared= c squared 8.5 squared + 6.4 squared= c squared 72.25 + 40.96= c squared 113.21=c squared 10.6400188=c even tho i thought this was the answer it is not because it does not solve the code on the worksheet...

geometry
find the circumference of each circle. use 3.14 for

science
How are a living thing and an automobile alike in carrying out life processes and how are they different?

english
i had an essay prompt, write about what Machiavelli would think if he encountered mencius' novel, mencius. I was looking for ideas to get started. Ways I thought he would disagree with Mencius is the importance of profit (Mencius- for the people, Machiavelli- for the ...

geometry
waht can I do to get help with my graph question ?

english
hi could anyone help me i need pun words for sucker and lollipop

biology
I was wondering if anyone could help me to better understand the Dichotomous Key and how to fill one in.

ethnics cultural diversity
I have to write a 700-1,050 word essay about my ethnic group but I don't know where to begin or where to search, do you have any advice?

math
IT CANT BE REDUCED

Vocabulary
i don't understand an homework it is to do with findind a diffrent word otherwase than walked.

algebra
6. Find the equation of each parabola described below. a) parabola with vertex (0,0) and the focus (0,7) b) parabola with focus (-3,0) and directrix x=3 c) parabola with vertex (3,3) and directrix x=-1 d) parabola with focus (-2,-1) and directrix y=5 e) ysquared=-6x translated...

chem
Water---> H2O (bi7) Fl2

social studies
Its china

Science ( the sun)
Is the sun a high mass star or a low mass star?