# Questions Asked onNovember 3, 2006

1. ## math

2x + 3y = 78 How do i solve for x and y? 2x=78 78/2=39 so x=39 3y=78 78/3=26 so y=26 Can't be, because 2(39)+ 3(26) does not equl 78 You need TWO equations when you have TWO variables, such as x and y. It can't be done with one equation. BUT, you say, what

2. ## physics

The length of a simple pendulum is 0.82 m and the mass of the particle (the "bob") at the end of the cable is 0.69 kg. The pendulum is pulled away from its equilibrium position by an angle of 6.7 ° and released from rest. Assume that friction can be

3. ## equation complex number

z^4 + 81 = 0 (solve) change it to polar, then take the root. z^4= 81@180 z= 3@180/4 + n90 where n=0, 1, 2, 3 check: z= 3@180/4 + 3*90=3@315 z^4=81@(4*315)=81@1260= 91@180=-81 you can check it at the other roots also. this is what i did: z^4 = - 81 z (81

4. ## Algebra

Is it possible to find the slope of a line if the equation has two ys? Find slope of the line whose equation is 8y = 7 - 2y Solve for y and you'll have a horizontal line. Combine the y terms. 8y+2y=7 10y=7 y=7/10 The general equation for a straight line is

5. ## MVT

How do I explain this problem? A trucker handed in a ticket at a toll booth showing that in 2 h he had covered 159 mi on a toll road with speed limit 65 mph. The trucked was cited for speeding, why? I know it is mean value theorem, but how? His average

6. ## English

I really need help with this Essay question and I haven't got a clue. It is to do with Fitzgeralds "The Great Gatsby" please answer before Monday 6th November. Thankyou. here is the question: Through analysis of patterning, examine Fitzgerald's use of

7. ## Free Fall

Thanks for the help with my previous problems. The acceleration to gravity on the moon is 1.6m/sec^2. If a rock is dropped into a crevasse, how fast it will be going just before it hits bottom 30 sec later? How far below the point of release is the bottom

8. ## complex numbers!

-2-2i in polar form = 2.8 cis 2.35?? -3+4i polar form = 5 cis 2.2??? 1 - sqaureroot(3i) polar form = 2 cis 1.04?? What is cis? never mind I have the right answers. polar form z = r (cos O + i sin O ) is also written in an abbreviated form z = r cis O cos +

9. ## math

the inverse cosine of negative 0.947 Put it in your calculator... The sequence of keys in my old ten dollar calculator is .947 +- 2nd COS Other calculators have different keys strokes. If you want to be neat, type this into a google search window:

10. ## How to sketch graph of...

a differentiable function y =f(x) that has the given properties. 1. local minimum at (1,1), and local maximum at (3,3) 2. local minima at (1,1) and (3,3) 3. local maxima at (1,1) and (3,3) I don't remember how to do this. Thank you.

11. ## ECONOMICS

this is a table with some questions and i don't know how to solve it -------------table-------------------- (1)real domestic output (GDP=DI) in billions \$200 \$250 \$300 \$350 \$400 \$450 \$500 \$550 (2)aggregate expenditures private closed economy billions \$240

12. ## History

Revenue for transportation was to come from these under Henry Clay's American System Very good detailed answer at this site: http://www.answers.com/topic/american-system-economic-plan

13. ## History

Who was the Democratic leader,"Cross of Gold" speech? William Jennings Bryan

14. ## Algebra

Please check for me. 7p - 7/p divided by 10p-10/5p^2 = 7p^2 6x - 6/x * 6x^2/8x-8 = 9x/2 I'm not sure how to answer this one. x/2 divided by 9/x + 5 I think it's x(x + 5) / 18 Without grouping symbols () it is impossible to understand the problems. The ^

15. ## Intermediate Algebra

Am I going in the right track? 8x -1/x + 5x - 3/2x = 16x^2 - 2x/2x^2 + 5x^2 - 3x/2x^2 16x^2 - 2x + 5x^2 - 3x/2x^2 =21x^2 - 5/2x^2 Find the LCD 6/7z- 28, 8/x^2 -4x = 7x(x-4) Simplify 3x^2 - 2x/15x-10 = x/5 Let's start by looking at your first problem: 8x

16. ## to bobpursley

My classmates friends want me to post their questions as well.Thats why there are multiple names is there a problem. Yes. You are posting duplicate or even triplicate questions. That is silly. If we have answered one, the answers to the others follow.

17. ## Math

Hers is another one: 3 people requires 3 weeks and 2 days to do a job. How long would it take for 4 people to do the same job? (Each week is 6 days) Convert time to days only to avoid confusion. Assuming the relation between people and time is linear,

Rank the following sentences from most formal to least formal by writing the appropriate number in the blank beside each sentence: 1 = most formal; 3 = least formal. /3 ___2__I was pumped. I mean, we had scored the best seats for the show. Awesome ___1__In

19. ## History Essay

I Need help with this essay The Purpose of this essay is to analyze the relationship between wealthy nations and supporting of the arts. -Think about the early years if the renaissance,and the spanish of the ducth today -include examples of artistic

20. ## English

Can anyone check my essay? I could send the rubric for scoring. Thanks You have to include the essay itself, so we can check it. Respond to this post with the essay. Thanks for asking. Whats your question..?

21. ## Eth

My assingment states to view the comparison of the UNited States-Centric. Which I have a compare and contrast sheet I need to fill in about how an average american perceptions about muslim and arab american and christian american groups. Now I've done the

22. ## economics plz help

this is a table with some questions and i don't know how to solve it -------------table-------------------- (1)real domestic output (GDP=DI) in billions \$200 \$250 \$300 \$350 \$400 \$450 \$500 \$550 (2)aggregate expenditures private closed economy billions \$240

23. ## Research Paper

Hi all. It seems that I've run into a problem while starting to write a research paper for my drugs and behavior class. You see we were given an outline to follow and we had to choose any drug related topic. So I'm doing mine on cocaine and the problem I'm

24. ## congruence

What is the difference between the statements segmentAB is congruent to segmentCD & AB is congruent to CD Thanks No difference. Congruence is congruence. A=B B=A

25. ## Interesting Geometry Probem

I am bulding a sculpture out of rock and need help figuring out how much rock to buy... Here are the figures... 1 ton of 1.5" rock covers 107 sq. ft. My sculpture will be comprised of 24 layers of rock 2" thick. Each layer will be aproximatly 3ft. by 3ft.

26. ## Arithmetic Operations

Find a set of 4 distinct positive integers a,b,c,d such that the smallest positive integer that can not be represented by such expressions involving a,b,c,d (instead of 1,2,3,4) is greater than 22.You can use digits exactly once. You are allowed to reuse

27. ## physics

In a room that is 2.13 m high, a spring (unstrained length = 0.30 m) hangs from the ceiling. A board whose length is 1.58 m is attached to the free end of the spring. The board hangs straight down, so that its 1.58-m length is perpendicular to the floor.

28. ## economics

please please please please help me this is due tomorrow!!! this is a table with some questions and i don't know how to solve it (1)real domestic output (GDP=DI) in billions \$200 \$250 \$300 \$350 \$400 \$450 \$500 \$550 (2)aggregate expenditures private closed

29. ## title making

whatis a good inline skating title for something that is aimed at promoting in line skating and incourage skaters to practice safe skating thanks so much this is due tomorrow and i have dinner soon, plz hurry and i thank you soooo much! Skate Safe and

30. ## Stats

Dee's store monthly sales for April, May, June are three independent random variables with means and variances as follow: April: Mean: \$9500 Variance: \$1250 May: Mean: \$7400 Variance: \$1425 June: Mean: \$8600 Variance: \$1610 a) find the mean and standard

this is a table with some questions and i don't know how to solve it (1)real domestic output (GDP=DI) in billions \$200 \$250 \$300 \$350 \$400 \$450 \$500 \$550 (2)aggregate expenditures private closed economy billions \$240 \$280 \$320 \$360 \$400 \$440 \$480 \$520

32. ## Research Paper

I have to write a research paper but I don't know what to pick as a topic. I want something simple. Last time i chose Napoleon and it was overwhealming. Can anyone suggest a simple topic that is easy to research. Preferable historical. Mozart disco John

33. ## English+ check!

Exercise: Add an appropriate /transition word/ or phrase to connect the following pairs of sentences. 1. Our first destination is Ottawa /there/; we plan to visit Montreal and Quebec City. 2. Standing on the rocky ledge, we had an aerial view of the

34. ## Chemistry

True or False or Sometimes true Removing one electron from an atom results in the formation of a postive ion with a 1+Charfe. Of course it is true. Normally atoms have a balance of electrons and protons.

35. ## history

What banking reform finally gave the nation a flexible money supply? This site will also answer this question. http://www.answers.com/topic/american-system-economic-plan

36. ## math - probability

Imagine a LONG bike with a total of 4 wheels - 2 in the front and 2 in the back. For the bike to work at all, at least 1 front wheel and 1 back wheel must be operational. All 4 tires are the same and each, individually, has probability 'p' of failing. What

37. ## math

I have a math test today.What shoud do?

38. ## More related rates.

Heyy, its me again. So last night I asked a related rate question, and I think I still don't get it. I tried it a few differnt ways and I think I'm just missing something...I don't think a speed of a rocket can be 0.018km/hr:S. So heres what happened: A

39. ## Another graph

How do I make a graph of f'(-1) = f'(1) = 0, f'(x) > 0 on (-1,1), f'(x) < 0 for x < -1, f'(x) > 0 for x >1 Thanks. if the derivative is postive on -1 to 1, you have a curve that shope upward as x increases. If the derivative is zero at -1, and 1, thekn at

40. ## complex numbers

-3 + 4i in polar form in pi the magnitude is 5 from pyth theorm. Now the angle. Using i the positive real as the reference axis, the angle from it is PI/2 + arctan4/3

41. ## allgebra

how is linear,quadratic,rational,or exponental realated to arithmetic series 1/4s=4