# Questions Asked onJuly 20, 2007

1. ## college algebra

Demand Equation: The price p, in dollars, and the quantity x sold of a certain product obey the demand equation x = -5p + 100, 0 (less than or equal to) p (less than or equal to) 20 a.) Express the revenue R as a funtion of x. b.) What is the revenue if 15

2. ## Micoeconomics

Your roommate's long hours in the chem lab finally paid off- she discovered a secret formula that lets people do an hour's worth of studying in 5 minutes. So far, she's sold 200 doses and faces the following average total cost schedule Quantity Average

3. ## science( chem)

Calculate the molar solubility of Mg(OH)2 in water I know Mg(OH)2=> Mg2+ + 2OH- 2H2O=> H3O+ + OH- Ksp= [Mg2+][OH]2 Kw= [H30+][OH-] Mass balance [Mg2+]=2[OH] So.. [OH-]=2[Mg2+]+ [H3O+] Charge balance is where I get kind of confused I know that the positive

4. ## Microeconomics

The supply of meat in Russia increases, causing meat prices to fall. Lower prices always means that Russian households spend more on meat. There is something wrong with this sentence. What is wrong? The work ALWAYS should not abe in here. Just because

5. ## Microeconomics

Demand increases, causing prices to rise. Higher prices cause demand to fall. Therefore, prices fall back to their original level. This sentence is wrong. What is wrong with it? If demand increases, wouldn't it stay increased which will not cause the

6. ## linear algebra

if: A and B are matrices and A^2 is similar to B^2 Is A guaranteed to be similar to B? ------- Matrix similarity means that the matrices are identical if one of the matrices is converted to another basis. If matrices C and D are similar: C = P^-1 * D * P

7. ## Algebra

(x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get x^2+2x-4x^2-4x-24-2x^2-11x+15

8. ## grammar

Does this sentence has voice issues? The ball was hit by the boy. Plz help explain The ball was hit by the boy. This sentence is in PASSIVE VOICE; that is, the subject is not doing the action of the verb. (Subject = ball; verb = hit) It would be better to

9. ## Algebra

(x)/(x-3)-4-(2x-5)/(x+2) I posted something before this, so now this is how far I got. The answer I know is -(5x^2-17x-9)/(x-3)(x+2) first I get (x)(x+2)/(x-3)(x+2)- (4)(x-3)(x+2)/(x-3)(x+2)-(2x-5)(x-3)/(x-3)(x+2) Then I get x^2+2x-4x^2-4x-24-2x^2-11x+15

10. ## Organic Chemistry

Hi, this is a sterechemistry problem. If you have a fisher projection problem with Ch3 at the top, Cl on the left, ethyl group on the right, and a CH double bonded to a CH2 (CH=CH2)on the bottom, it is an S nomenclature correct? I figured out that Cl is

11. ## Algebra

Solve Q= (N-S)/ N for N So when I multiply both sides by N I get Q(N)= N-S I know I am doing something wrong, the answer is in the book which is N=S/(1-Q)but I don't understand were the 1 comes from. Could you write it out step by step, so I can see what I

12. ## linear algebra

Prove that the trace is a similarity invariant. In other words, if two matrices are similar, then they must have the same trace. Got the answer from Wikipedia: tr(AB) = tr(BA) tr(ABC) = tr(CAB) tr(P^-1 * A * P) = tr(P^-1 * P * A) = tr(A)

13. ## Microeconomics

For each of the following situations for the egg market, describe what the impact on the equilibrium price and equilibrium quanity would be. 1-A sureon general warns that high-cholesterol foods cause heart attacks. - This would cause the price to drop and

14. ## Algebra

Posted by Tammy on Thursday, July 19, 2007 at 10:12pm. download mp3 free instrumental remix (3x+4)/(3x-4)+(3x-4)/(3x+4) --------------------------- Divide top by bottom (3x-4)/(3x+4)-(3x+4)/(3x-4) Very Big Problem and help would be greatly appreciated For

15. ## Early Child Ed.

Would you please check these questions and my answers to be sure that I have chosen the most appropriate answer? 1.Which one of the following does NOT agree with the developmental approach? A. Development is influenced only by maturation. B. Development is

16. ## Algebra2

i was wondering if someone could check the answer i got for this math problem 7+2(5-2*9) = 243 I got -19 I think you're supposed to do the parentheses first...but within that, you're supposed to do the multiplication and THEN the subtraction, and then mult

17. ## Algebra

The answer in the book however says -(5x^2-17x-9)/(x-3)(x+2) so I don't know what I am doing wrong, can you take me step by step through the problem. I have a lot of problems, but I think once I understand what I am doing wrong with this one I can get the

18. ## Algebra (Re.: Reiny)

The fact that there was that nice symmetry to the question, makes it easier than it first appears. I had it as: (a/b + b/a)÷(b/a - a/b) look at (a/b + b/a) the common denominator for this would be ab, so a/b + b/a = (a^2 + b^2)/ab similarly for (b/a -

19. ## English

Between the sixth and seventh floors of the building in the stairwell over in the corner. Hi Teacher, how in the world do i fix this? Thank you for using the Jiskha Homework Help Forum. Sorry, but whatever you want fixed does not show! Between the sixth

20. ## science( chem)

For literature citation at the end of a lab report if only the text is used would that have to be cited as well? Or would it not be cited and on the page for literature citation I would type no sources cited? You have to cite anything and everything that

21. ## English

Are these sentences correct: The littel boy handed Santa a list that said he wanted: a truck, a train, and a million dollars. Her mind flew so quickly-she had so much to remember-that she forgot to stop at the light First sentence: ~~correct the spelling

22. ## Economyst re-post

Looks like the formual dropped the exponents when I posted it, I've fixed that below....does this make any more sense? I'm not sure I have the formulas correct for this problem and I do not know what the labor hours are.... Dimex Company, a sheet-metal

23. ## Early Child Ed.

Would you please check these questions and my answers to make sure I have chosen the most appropriate choice? 1. Prompting and cueing are: A. not useful in learning social skills. B. primarily verbal methods. C. primarily physical methods. D. used to guide

24. ## english

punctuating sentences, adding subject/and or verb. I do not get it, I am lost with this assignment. I need help. 1. With five gallons of gas. 2. Because the store was closed. 3. For the seventh time. None of these three is a complete sentence. You need to

25. ## Organic Chemistry

Hi, this is a sterechemistry problem. If you have a fisher projection problem with Ch3 at the top, Cl on the left, ethyl group on the right, and a CH double bonded to a CH2 (CH=CH2)on the bottom, it is an S nomenclature correct? I figured out that Cl is

26. ## English

What is the correct punctuation for: The book had some nice features, such as: a hard-bound cover, a ribbon for a bookmark, and the author's signatures. How about "Among the nice book's features were a hard-bound cover, a ribbon bookmark, and the author's

27. ## history

List two to three characteristics of Orientalism. How may Orientalism and prejudice contribute to hate crimes against these groups? Please post your answers and we'll be glad to critique them. This question has been asked by several others. If you put

28. ## English 101

Are these questions correct: German grammar is simple: in that language, there are no exceptions to the rules. Her daughter went on a diet that consisted of all fast food: hamburgers, hot dogs, and french fries. The gardner-took the hoe and the shovel-and

29. ## Computer Science

Help me find the answers to these brain teasers. #1 I am where the sky is orange; I am where the grass is red; I am the land of violet bananas and the home to blue oranges. What am I? #2 Wha is a word that is 1 syllable but when you add 1 letter the end;