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Posts by Beth

Total # Posts: 844

Math
How do we express this in interval notation? x < 0 or 7 < x < 9

Algebra
Ok so the function is f(x)=k(x-r1)(x-r2)(x-r3) =k(x-(-5))(x-ã3)(x--ã3) Now to check this?

Algebra
What is r2 and r3 stand for? Not too sure how to check this. Can you show me please I got 10 more problems like this. Thanks!

Algebra
f(-5)= 1^3 +5(1)^2-3(1)-15 = -12. f(sqrt3) = 1^3 +5(1)^2-3(1)-15 = -12 f(sqrt-3) = 1^3 +5(1)^2-3(1)-15 = -12 Are these correct?

Algebra
Find a polynomial function of degree 3 with the given numbers as zeros. -5, sqrt3, -sqrt3

Algebra
Find the inverse of the relation: {(0,1),(5,6),(-2,-4)}

Algebra
Please Solve: t+1/3 - t-1/2 = 1

Algebra
Thank you for the help!

Algebra
f(x+h)-f(x)/h for f(x)= 4x+9 and simplify.

Algebra
I think I got it! Are the slopes of the given and parallel lines = ?

Algebra
so based on this her sales would be $740.16 money earned from weekly sales +225.00 base pay $965.16 Amy’s Weekly Paycheck Earnings

Algebra
Amy earns a weekly paycheck consisting of base pay of $225, plus a commission of 4.8% of her weekly sales. (a) Write an equation that can be used to determine Amy’s weekly paycheck P, given the amount of weekly sales s. (b) Determine Amy’s weekly paycheck if her ...

Algebra
Great! Thanks for the help! So R= 8 and the center is (-1,5) got it! Thanks again!

Algebra
That is what I thought, so the standard form would be (x-(-1]^2 + (y-5)^2 = 64

Algebra
ok based on that I would say the radius is 8 cause 8*8 = 64 and the center is (1,5)? Or do the signs change because of the equation (x-h)^2 + (y-k)^2 = r^2 making the center (-1,5)?

Algebra
State the center and the radius of the circle represented by the equation (x + 1)^2 + (y – 5)^2 = 64

Algebra
Thanks!

Algebra
0^2 = 0? Just wanna be sure

Chemistry
For one mole the ideal gas law is pV=RT , write down the exact differential dV. Would I be right to differentiate with respect to T and p separately?... V = RT/p dV = R/p - (RT)/(p^2)

Chemistry
In solution it would separate into ions. As this is a strong base it would be fully dissociated in solution i.e K+ ions and OH- ions.

health
Need help writing a report on nutritional value.

Chemistry...Help?
I believe the answer to part (B) can be found in your text in the chapter on Acid Rain. It that chapter, it states that Carbonic Acid acts in the environment to keep rainwater at a pH of between 5 and 7. It then goes on to dicuss the term acid rain as pertaining to ...

calculus
find the derivative for y= (tan^-1)e^x

Accounting-business
Can you please see if there is anything I can add to this. What are the ethical issues involved? What should Sue do and what decision-making approach should she take? This is what I have to this question so far. The Ethical issues are not following the accounting standards ...

Accounting
this is what I have to this question so far. Can you please see if there is anything I can add to this. What are the ethical issues involved? What should Sue do and what decision-making approach should she take? The Ethical issues are not following the accounting standards and...

Accounting
this is what I have to this question so far. Can you please see if there is anything I can add to this. What are the ethical issues involved? The Ethical issues are not following the accounting standards and ethics of accounting. Anne Distagne was the CEO of Linkage ...

Chemistry
How could the following transformation could be carried out. C6H5C=CH --> C6H5CH2CH20H I don't know how you would get a primary alcohol because I thought that following Markovnikov's rule any reaction would involve addition onto the other carbon.

Accounting-business
I need to write a paper on this can anyone help me please? Write a paper in which you assume the role of Kardell's Ceo. Assume there is a link between the chemical spill sonox and the Company and take immediate step to upgrade the plant to prevent future spillages.

chemistry
Would a thioester hydrolyse faster or slower than a normal ester and why? I think the thioester is slower, but I'm not sure why.

Algebra
So then the final answer is (m+4)(2a - 2)

Algebra
Factor (m + 4) (a – 5) + (m + 4) (a + 3)

Algebra
Please simplify. 5x ^-2 - 3y ^-1 _________________ x ^-1 + y ^-1

Algebra
Help please! I think this is the way to solve this problem, but am not sure. Any help is most appreciated. Thanks! Simplify (p^4 + m p^2m)^-4/(p^-4)^-m

english
I really don't have a question, but can you give me an example or sample of an outline of a historical person for a research paper.

english
Thank you GuruBlue and Ms. Sue!

english
Which is correct? If you do it correctly, it is hard. OR If you do it right, it is hard.

Study Tips
Any tips to help me study on a quiz [or any kind of tests] ? I have trouble getting all of the materials in my head. HELP?

math
Make a substitution. Let x = cos2t(theta) and you'll have 2x^2 + x-1 = 0 Then factor: (2x -1)(x +1)=0 x = 1/2 or x = -1 so cost = 1/2 or cost = -1 t = 60 degrees, 120 degrees or t = 180 degrees. In the second one, let cotx = 0 and cscx = 1/2 and now solve for the values ...

math
a quarter!:)

Literature
this is so helpful!

Poem: I Hear America Singing By: Walt Whitman
WOW, Great Explication!!!

language
What type of materials do you expect to review for your research paper?

math
how would you rathionalize the denominator of: f(x)= x/((x+4)^.5)-2

IPC Science
Everything you have been tested on, key concepts, terms ideas, as well as anything the teacher mentioned might be important.

physics
If a person radiates about 74 W of power at room temperature, how long does it take for a person to radiate away the energy acquired by consuming a 235 Calorie doughnut?

Chemistry - please help
I am not sure about the equation either. Obviously if I2 was being produced in the titration then the end point could be tested with starch, but the compounds I have found seem to be right according to the percentages, so I'm not sure what else the equation could be.

Chemistry - please help
An anyhdrous metal chloride, X, contains 37.4% Cl. X is a reducing agent, 0.895 g requiring 23.60 cm^3 of 0.100M KIO3 for complete oxidation in 3- 9M HCl. X reacts with potassium chloride to form an adduct Y, containing 14.8% K. Identify X and Y, and comment briefly on their ...

Chemistry
An anhydrous metal chloride, MCln, (1.500 g) is dissolved in water and the solution reacts with silver nitrate, requiring 47.34cm^3 of 0.5000M solution, to precipitate all the chloride as silver chloride. Identify M.

Math
For the harmonic potential V(x,y) = x^2 + y^2 a) Find the total differential, dV. For this I got dV = 2x.dx + 2y.dy b) Given that -dV = F(x).dx + F(y).dy, where F(x) and F(y) is the force in the x and y direction, respectively, write a differential equation describing the ...

Physics
For the harmonic potential V(x,y) = x^2 + y^2 a)Find the total differential, dV. b) Show that dV is exact c) Given that -dV = Fx.dx + Fy.dy where Fx and Fy is the force in the x and y direction, respectively, write a differential equation describing the change of potential ...

Math
Find the integral of f(x)=a/(x^2+a^2) given that d/dx arctanx = 1/(x^2+1)

intrest groups-gov and pol
FYI: AS i mentioned before. I DID SEARCH THE INTERNET. i FOUND TWO DEFs. I WAS ASKING FOR CLARIFICATION =)

intrest groups-gov and pol
Define the term "dirty dozen" i found two definitions online is it : The US state department hit list of the 12 most wanted in Saddam's regime, including his sons Uday and Qusay, or The list of the twelve most persistent organic pollutants (POPs) banned at a ...

social studies
What materials were/are South America Koji huts made of?

physics
(A multiple part problem) Find the tension in the three wires that support a 10.2kg light fixture. Each wire forms 40° with the ceiling. Answer for top left wire. Find the tension in the three wires that support a 10.2kg light fixture. Each wire forms 40° with the ...

Math
Rearrange for J; n=(2J+1)exp(-(BJ(J+1))/(KT)) where T, B and K are constants

Physics
A first order exponential decay can be written as A(t)= Ae^(-t/r) where A(t) is the amount (of substance) after time t, A is the initial amount at time t=0 and r is the decay time. The fall time is defined as the time in which A(t) falls from 90% to 10% of its initial value. ...

Maths
I understand how you do it for T, but since there is more than one J, I don't understand how you make J the subject.

Maths
Rearrange for T and J; n=(2J+1)exp(-(BJ(J+1))/(KT)) where B and K are constants

sublimation poems
S olid to a gas U nder pressure B eware of the phase change L iquid phase is skipped I odine can sublime M atter A drastic change in temperature causes this phase to occur T ake CO2, it can sublime from a solid (dry ice) to a gas I t changes matter from a solid to a gas O N ot...

Networking LANs
You have been contracted to build a network for a multimedia development firm that currently uses a 10-Mbps Ethernet network. The company requires a high-bandwidth network for the multimedia team, which constantly views and manipulates large files across the network. The ...

english
An understood pronoun is when you talk to someone but leave out the word "you", because its obvious that you are talking to them. Example: "You pick that up" could be said as "Pick that up" In the second sentence the "you" is unserstood...

math
First of all I don't just need the answer I need it explained where a third grader can understand it. I actually know the answer, but I don't know how to explain it to a third grader. ?Doug has 170 stamps in his collection. His first book of stamps has 30 more stamps ...

Math
I still don't quite get how you are explaining it. Can you explain in a different way?

Math
First of all I don't just need the answer I need it explained where a third grader can understand it. I actually know the answer, but I don't know how to explain it to a third grader. ?Doug has 170 stamps in his collection. His first book of stamps has 30 more stamps ...

Math
I think I have an answer to both the first and second problem. Problem 1-It appears you are subtracting 8 each time. 64-8=56 56-8=48 48-8=40 40-8=32 64,56,48,40,32 Problem 2-It appears you are adding 5 each time. 61+5=66 66+6=71 71+5=76 76+5=81 61,66,71,76,81

science
please help me with this challenge question, as i don't quite understand it.: Yolanda makes this hypothesis: "If salt is added to water, then the water will boil at a lower temperature." She sets up and experiment to test her hypothesis, but discovers that it ...

7th grade science hypothesis question
please help me with this challenge question, as i don't quite understand it.: Yolanda makes this hypothesis: "If salt is added to water, then the water will boil at a lower temperature." She sets up and experiment to test her hypothesis, but discovers that it ...

Chemistry
A block of metal has a width of 3.2 , a length of 17.1 , and height of 5.8 WHAT is the VOLUME OF THE BLOCK?

Integers
When you add integers, why do you subtract? -9+5=-4. I do not understand why there is an addition sign. How do you know when you are suppose to subtract.

keybording and word processing
a.?

math
(0.2x15) : (0.8x7.5) ::_________:(0.25x56)

create table
hmmmm I have answer, why don't u do your own college work?

math
y=4x - 3, work out the value of x when y =11

music
whats an important factor of jazz?

Physics
In the formula, E = hf, what is h? Is it wavelength?

Physics
Who was the scientist who first developed the notion of quantization was...? Was it DeBrogile?

Physics
The discreteness of the energy levels of electrons about the atomic nucleus is best understood by considering the electron to be a .....?

Physucs
What model of light does the photoelectric effect support?

Physics
To say that light is quantized means that light is made up of what?

Math
Did I do this right? Find the domain and range f(x)=-4x-2 y=-4x-2 x=-4y-2 x+2/-4=-4y/-4 f(x)=x+2/-4 answer: domain (all real numbers) range (all real numbers)

Math
Find the domain and range of the inverse f(x)=-4x-2 y=-4x-2 x=-4y-2 x+2/-4=-4y/-4 f(x)=x+2/-4 answer: domain (all real numbers) range (all real numbers)

Math
My answer is domain(all real numbers) range(all real numbers) Is this right??????????????

Math
Find the domain and range of the inverse f(x)=-4x-2 y=-4x-2 x=-4y-2 x+2/-4=-4y/-4 f(x)=x+2/-4 domain (all real numbers) range (all real numbers)

Economics
Leakages from the income-expenditures stream are: A. consumption, saving, and transfers. B. saving, taxes, and transfers. C.saving, taxes, and imports. D. imports, taxes, and transfers.

Science
Why is the earth's temperature different in different places?

physics
A car (m = 640.0 kg) accelerates uniformly from rest up an inclined road which rises uniformly, to a height, h = 43.0 m. Find the average power the engine must deliver to reach a speed of 19.9 m/s at the top of the hill in 23.9 s(NEGLECT frictional losses: air and rolling, ...)

MBA Financial Accounting
How do you figure the total expense of two loans to show for year ending Dec. 31, 2006? The annual payment date is Sept. 30 with first payment due 2007.

accounting
Net income is the difference between revenues and expenses when revenues exceed expenses for a specific time period.

geometry & measurement
jose wants to buy a new tv that will fit the opening of his entertainment center. the height of the opening in his entertainment center is 27 inches. usually, the opening of an entertainment center has a width-to-height ratio of 4:3. what is the diagonal measurement of the ...

science
what is O2??

STATISTICS
The seeds of the garden pea are either yellow or green. A certain cross between pea plants produces progeny in the ratio 3 yellow:1 green. If four randomly chosen progeny of such a cross are examined, what is the probability that: a)3 are yellow and 1 is green b)all 4 are ...

Spanish very confused.
1.estas 2.estar 4eres 5.es 6.es 7.son

English
Can someone tell me the physical and character traits of these characters in A Raisin in the Sun: Lena, Walter, Beneatha, Ruth, George Murchinson, and Joseph Assaigal?

algebra
find slope of any parallel line through points (9,6) and (1,2)

african american hist.
what is the former slave that traveled the contry to speak out against slavery

Pre-Algabra
Making a pie chart,, can't figure out how to change from percent to degree. can someone help

Math
To determine if 3417 is prime, you would have to try dividing 3417 by every whole number less than 3416. True or false and how did you get the answer

Math
How did you get this answer I have been pondering over it for 2 days. You are a genius. Thanks

Math
(2.3x 10(exp-8))x (3.77x 10(exp-7)

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