Mathematics - 5 November 2007

so something i can put into my calculator to find the sum of all the proceeding numbers to one number

2007-11-05 12:31:56 · 2 answers · asked by biggoof125 1

the integral is :

e^(-8000t) * [cos(6000t) + 2sin(6000t)] dt

thanks in advance!

2007-11-05 12:27:44 · 2 answers · asked by Anonymous

x = csc (theta)

y = sin (theta)

2007-11-05 12:26:40 · 1 answers · asked by Anonymous

Your teacher allows the class to have a pizza party. The pizza parlor is running a special: The first pizza in an order costs $15.99, the second (in the same order) costs half the price of the first, the third pizza costs half the price of the second, the fourth cost half the price of the third, and so on. If your class can only buy whole pizzas and has exactly $31.74 to spend (excluding tax and tip), what is the greatest number of pizzas that the class can purchase? Explain your reasoning.

2007-11-05 12:23:25 · 2 answers · asked by Anonymous

best answer to first correct response

2007-11-05 12:20:14 · 5 answers · asked by Anonymous

The apothegm of a regular pentagon is 10.8 centimeters.
what is the radius of the circumscribed circle?
what is the length of a side of the pentagon?
what is the perimeter of the pentagon?

2007-11-05 12:20:12 · 1 answers · asked by jumba 1

The compliment of a graph G is a having the same vertex set as G but consisting of exactly those edges that are not edges of G. ( If AB is an edge of G, then it is not an edge in the compliment and vice versa. Let N denotes the number of vertices in G.
a) Suppose N is even (N is greater than or equal to 4) and G has an Euler Circuit. Explain why the compliment of G can not have an Euler circuit.
b) Suppose N is odd (N is greater than or equal to 5) and has an Euler circuit. Explain why the compliment of G may or may not have not have a Euler circuit.

2007-11-05 12:18:15 · 1 answers · asked by Anonymous

[Assume that each is equally likely to be born on any of the 365 days of the year, i.e. no one is born on Feb. 29 in a leap year.]

2007-11-05 12:13:17 · 4 answers · asked by Kent H 1

Okay, I have no idea how to do my homework, and it's embarrassing because this is just review. Anyway, here are the problems that I am struggling with: _____% of 40=10
And the other one is 67% of _____=80.
I don't want the answers please, I'd really like to know how to do them so that I can do the rest of my homework before tomorrow. Thank you.
-R

2007-11-05 12:10:09 · 7 answers · asked by Rin 1

1. 18
2.120
3.56
4.390
5.144
6.153

2007-11-05 12:02:58 · 8 answers · asked by Anonymous

What are all the posiblites to make 16?

2007-11-05 11:57:35 · 8 answers · asked by Anonymous

2007-11-05 11:49:02 · 5 answers · asked by Anonymous

what is one-half plus three-fourth of a chicken?

2007-11-05 11:33:48 · 10 answers · asked by Anonymous

Find the Least Common Multiple (LCM)

3, 7, and 10

6, 7, and 8

2007-11-05 11:24:32 · 6 answers · asked by awesomeqt53 3

The half-life of Carbon-14 is about 5700 years. If there is only 37 percent left of the C-14 originally present in an object, how old is the object?

2007-11-05 11:21:53 · 2 answers · asked by JP 1

I spent away too much time trying to figure that one out . Can I get a clue or something please
Problem:
logx + log(x-9) = 1

2007-11-05 11:14:06 · 1 answers · asked by D M 1

I am really confused on how to do these problems. i know you use the chain rule but I am not getting the correct answers. thanks so much if you can help and expain how to do it:

1)
f(x) = ln(5sinx^2)
f ' (x)=?

2)
F(y) = yln(9 + e^y)
F '(y)=?

3)
y = (ln (3x))/x^3
y'(x)=?
y"(x)=?

4)
This one is find an equation of the tangent line to the curve at the point (4,0)
y=ln(x^2 - 15)
y=?

5)
y=(sin4x)^lnx
y'=?

Thanks so much for any help you can give, I would really appreciate it!!!!

2007-11-05 11:12:27 · 2 answers · asked by bballchic6798 2

2007-11-05 11:07:13 · 1 answers · asked by Anonymous

1/2(4x+5)

if you could put a step-by-step instructions that would be nice, thanks.

2007-11-05 10:34:49 · 8 answers · asked by Anonymous

An oil refinery is located on the north bank of a straight river that is 1 km wide. A pipeline is to be constructed from the refinery to storage tanks located on the south bank of the river 5 km east of the refinery. The cost of laying pipe is $500,000 per km over land to a point P on the north bank and $1,000,000 per km under the river to the tanks. To minimize the cost of the pipeline, how far from the refinery should P be located? (Give your answer correct to two decimal places.)

2007-11-05 10:20:08 · 2 answers · asked by Jess 2

Here is a picture of the puzzle
http://i22.tinypic.com/347v2wk.gif

Can anyone tell me the secret to cracking open this puzzle? It is not like most other kakuro puzzles, which can be solved without guessing or trial and error? Is there some special strategy to solving this without trial and error or guessing?

NOTE that I am not interested in the final solution. I could get that if I want to. What I want is tips and strategies.
Thank you.

2007-11-05 10:12:39 · 4 answers · asked by Dr D 7

and what does the m/s stand for?

2007-11-05 10:12:00 · 5 answers · asked by s 1

Okay, so I have these two probs. w/answers.
(I cant type root symbol ,the little thing that looks like a check mark)
cubed(3) root of 64Pcubed(3)=4P
and
fourth(4) root of 16P to the 4th power=2IPI
Why is the 2 lPl in absolute value and not the 4P???????

2007-11-05 10:11:03 · 2 answers · asked by Anonymous

f(x) = 2x^3 - 54x^2 + 480x - 1300

a) what are the critical values?

b) do they represent either a relative minima/maxima?

c) find the coordinates of any points of inflection

d) evaluate the function (coordinates) at the critical points

im totally stuck. i have no clue how to do this. id really appreciate any help/comments on this. thanks!!

2007-11-05 10:03:14 · 3 answers · asked by Mathema-what?! 1

A Square is a rectangle, but rectangle is not a square. why this statement is correct can you think of another example of this type of statement using quadrilateral???

2007-11-05 09:54:07 · 7 answers · asked by Anonymous

81s^2-16=0

I keep getting all decimals...???

2007-11-05 09:52:15 · 3 answers · asked by higherlovetx 5

How would I do this?

Solve each system of equations by using substitution.

1) m+n=20
m-n= -4

Solve each system of equations by using elimination.

1) 2p-q=5
3p+q=5

2007-11-05 09:49:03 · 4 answers · asked by John.X 2

A radioactive substance decays at a rate proportional to the amount present. If 20 percent of such a substance decays in 19 years, what is the half-life of the substance?

2007-11-05 09:38:25 · 1 answers · asked by JP 1

go to http://mathgod.com/mathcomps/interschools/fall2007/fall2007interschool-test.pdf and see if you can figure these out?!!!
I need to do them for Mu Alpha Theta, and its not cheating cuz it says I can use any resource (see for yourself) that includes internet and other ppl!. I'm a freshman and let me tell ya, if I try these I will be going in way over my head. Computer programs help, especially for the last questions that aren't really questions, don't ask me which ones! I have no idea...I got a few answers though.

2007-11-05 09:26:49 · 7 answers · asked by ? 2

For some reason I keep getting stuck once I find the derivative. I have that f'(x)= 6-9x^(-2) but I can't find the local max and mins, no matter what I try .... thanks for your help!!!

2007-11-05 09:17:03 · 2 answers · asked by Jackie S 1