# Questions Asked onJuly 3, 2008

Does anyone know any tricks to help me remember the musical notes?

2. ## Algebra

Evaluate the function at the given value of the independent variable and simplify. f(x) = 2x2 - 5x + 6; f(x - 1)

3. ## physical science

A 250.0 kg roller coaster car has 20,000.0 J of potential energy at the top of the hill. Neglecting frictional losses, what is the velocity of the car at the bottom of the hill?

4. ## Calculus

Use a specific example then expand to the general case to determine what happens under scalar multiplication. That is, determine if k(a * b) = (ka) *b = a* (kb)? What does this even mean? Merci beaucoup. I am thankful for the help.

5. ## information management

List and describe each of the seven phases of the systems development life cycle. Make sure your descriptions make connections between the different phases – how one leads to another, the importance of each, etc.

6. ## chemistry

I would love some input on a few problems, listed below. My answers follow the questions 1. Would it be feasable to store a solution of lead nitrate in a container of metallic zinc? Why or why not? No, it would not. A chemical reaction takes place, as the

7. ## Physics ***HELP***

please explain how you got the answer car A - 20m/s car B - 30m/s Assume that both cars are 5m long. Suppose that car B is 20m behind car A is attempting to overtake car A. How long will it take for car B to arrive 10m ahead of car A?

8. ## Algebra 1

If the sides of a square are lengthened by 8cm, the area becomes 289cm^2. Find the length of a side of the original square. I do not know how to do this please help me.

Hi everyone :) I need a lot of help. I have many questions i don't get how to do and even if you can help me with one of them, I'd truly appreciate it. I really need the help and i gotta hand this in soon so please help if you know how to do any of these

10. ## Algebra

Can someone please help me with this I am so confused I have been working on it for 2 hrs!! Bayside Insurance offers two health plans under plan A Gary would have to pay the first \$70 off his medical bills plus 30% of the rest. Under plan B Gary would pay

11. ## Calculus:Help!

Any ideas on how to solve this: Use a vector solution to show that a scalar equation for the line through the points P1(x1, y1) and P2(x2, y2) is y-y1/x-x1 = y2-y1/x2-x1? Very confused as to what is meant by this question. Thanks.

12. ## English Improving writing rough draft

Please take a look at this this is what I am turing in (tomorrow) Prewriting Prewriting Paragraph 1 The problem is Jack and Rachel often have nothing to do Bonnie and Molly are working extra and have to work over time Melanie and Jessica share an

13. ## Chemistry

A sample of O2 gas is placed in a sealed 1.00 L flask and pressure is measured as temperature is changed. The data are plotted and the slope of the resulting line is equal to 0.00400 atm/K. The line passes through the origin of the graph. There are (blank)

14. ## Chemistry

Balance the equation: _MnO4– + _H+ + _Fe2+ => _Mn2+ + _H2O + _Fe3+ How do you do balance this redox reaction?

15. ## chemistry

could some one please help to calculate the fraction of octahedral holes occupied by aluminium in Al2O3

16. ## Math

You are a policeman on a case in which you believe there is a strong suspect. Based on your overall experience, your prior knowledge of this “person of interest,” and the evidence you’ve seen against him thus far, you believe that when he claims to

17. ## second post algebra

does anyone have a clue how to do this. I am so lost. If you can please explan why you do what you do when working this out so maybe i can better understand this. thanks a bunch. Prove (algebraically, not numerically) that the product of the solutions of

18. ## Algebra

In a right triangle find the length of the side not given. b=1, c=sqrt10, a need help

19. ## information management

Why is the waterfall model valuable in the management of information technology projects? Explain your answer.

20. ## algebra

Find the LCM for u^3 + 6u^2 + 9u, u^2 - 6u I came up with u(u+3)(u-6) is this correct?

21. ## Math

I can't calculate 1 as the answer given to the following problem. I keep getting 2. Can you show me where am I going wrong? The spread of rumor among 100 people can be approximated by the equation log10(x) – log10(100-x) = (0.1)t – log10(90), where x

22. ## maths

an amount gets doubled in 15 years with compund intrest.In how many years amount will become 8 times,using the same compund intrest ?

23. ## maths

there is a long table having 8 chairs on each side .there are 16 persons who are to be seated for a tea party.4 of them want to sit on a particular side and 2 other want to sit on the other side. in how many ways all the 16 people may be seated for the tea

24. ## Algebra

x-8/x-9-x+1/x+9+x-17/x^2-81 =x^3-81x^2-7x-27/x^2. Can some check this my answer and see if it corre4ct please.

25. ## physical science

how much current flows through a circuit if the resistance is 4 ohms and there is a 12-volt battery?

26. ## Chemistry

The total pressure in a flask containing air and ethanol at 257C is 900 mm Hg. If the pressure of the air in the flask is 762 mm Hg, the vapor pressure of ethanol is (blank) mm Hg.

27. ## HRM 240

How can large and small firms utilize change management concepts to meet growing technology demands?

28. ## Calculus

Determine a vector equation for the line through the points (-1, 4) and (2, -1). I said: r= (-1,4) + (4,-5), tER, is that correct?

29. ## Chemistry

A gas initially at 20 degrees C it must be changed to (blank) degrees C to triple the pressure.

30. ## Calculus:Help!

Verify using an example that a + ( b• c) = (a •b ) +c ? Explain your reasoning. I have been over this a thousand times and I don't understand (the notes I was given online are incorrect so I don't know how to answer this). THANKS!

31. ## ethnic

What information about race and ethnicity in the United States has helped you better understand or relate to specific minority groups? Have you learned something new about your own cultural history? Trends in immigration will continue to shape the face of

33. ## government

What phase in the Declaration of Independence might be considered by some to violate the implied constitutional principle of the separation of church and state

34. ## Marketing

There was a time when the presence of web based e-commerce was distinctive and differentiating. Is it a price of entry today?

35. ## Algebra 1

quadratic equation. ax^2+bx+c=0 Solution 1,only solution. Can you help me I am struggling to work this out.