Mathematics - 27 October 2007

Which would you rather have? A pound of dimes or a pound of quarters?

2007-10-27 23:29:14 · 4 answers · asked by chilicooker_mkb 5

2007-10-27 22:28:27 · 1 answers · asked by dead or alive 3

I know 10% you just drop the last number and subtract it, so 10.99 you drop the last nine so it is 1.09, round up to 1.10 discount...... But what about 15%? 20%? How can you calculate those in your head?

2007-10-27 21:28:03 · 8 answers · asked by Anonymous

((tan α+tan β)/(tan α-tan β)) to ((sin(α+β))/(sin(α-β)))

2007-10-27 20:57:10 · 5 answers · asked by firefly 1

Could you provide the correct spelling and pronunciation...:)

2007-10-27 20:26:26 · 8 answers · asked by Deepa 1

Each side of a square is increasing at a rate of 6 cm/s. At what rate is the area of the square increasing when the area of the square is 16 cm^2?

My work:

Given = 6 cm/s
Unknown= dx/dt when x = 4

A=x^2

(dA/dr)(dr/dt)=2x(dx/dt)

(dA/dt)=2x(dx/dt)

6 cm/s=2(4)cm(dx/dt)

6/8 s=dx/dt


The obvious thing i have wrong is that the rate turned into seconds. The second thing is, the answer is 48cm^2/s.

Please help! I already tried doing wierd things to the problem like using 36cm^2/s^2 and 96cm^3/s as the rates. . .

2007-10-27 19:53:09 · 7 answers · asked by IAmYourDoG 1

2007-10-27 18:01:40 · 3 answers · asked by Richard Hake 2

2007-10-27 17:49:33 · 6 answers · asked by +-+-+-+-+- 4

What equation is used to make every number equal to 4?
49=9=4

7=5=4

89=10=3=5=4

91=9=4

894=25=11=5

20=6=3=5=4

-4=12=6=3=5=4

2007-10-27 17:27:46 · 1 answers · asked by Abby G 1

4-5 simple and meaningful reasons why geometry is used in art!
thanks!

2007-10-27 17:11:54 · 2 answers · asked by Anonymous

how would you factor this? I cant factor! :(

3(2a-b)^2+17(2a-b)+10

2007-10-27 17:11:05 · 7 answers · asked by Krumpits&Tea☺ 2

I don't know how i got into this Calc 2 class. I took a multiple choice placement test, and some how, i scored high enough to get into that class.

Is there a major difference between Calculus 2 and Calculus 1? Can i learn the material covered in Calc 1 in Calc 2?

2007-10-27 16:53:31 · 8 answers · asked by Yikes! 1

Help please! What are the partial derivatives of the following:
a. -2xy/((x^2+y^2)^2) with respect to x
b. (1-((x^2-y^2)/(x^2+y^2)^2) with respect to y

2007-10-27 16:49:39 · 2 answers · asked by kmf12 1

Its

Write the mixed number as an improper fraction, or write the improper fraction as a mixed number.

theres a problem 2 3/4= ?/4 what do i do?

2007-10-27 16:42:56 · 7 answers · asked by dancemagic95 2

Wuts 10% of $250.00

2007-10-27 16:41:02 · 8 answers · asked by Joshua P 1

2007-10-27 16:19:04 · 4 answers · asked by nikeboy9_1 1

if so why?...Whats the purpose?

2007-10-27 16:16:23 · 6 answers · asked by 2sweet 1

Solve each of the following systems of linear inequalities graphically.

3x-y is less than or equal to 6,
x is greater than or equal to 1,
y is less than or equal to 3

2007-10-27 16:07:25 · 1 answers · asked by jamie2192003 1

Without using a calculator, use the properties of inverse functions to find the exact value of the expression.

sin(arcsin 0.7)

i don't just need the answer, can you help expalain it as well? thanks

2007-10-27 15:59:38 · 6 answers · asked by Anonymous

How would you factor these?

c^4-2c^2+1

(y-3)^3 - (y-3)^2

2007-10-27 15:43:55 · 4 answers · asked by Kate! 3

how does it feel to find advanced multivariable calculus (Calc 6) as easy as precalc, how does it feel to grasp the concepts of topology, number theory, and complex analysis as easily as getting the jokes on family guy, how does it feel to know you can compute 3888445*99.65 without using a calculator in less than 5 seconds?

how does it feel to be a math genius????

2007-10-27 15:41:48 · 17 answers · asked by Anonymous

2007-10-27 15:41:41 · 11 answers · asked by Anonymous

2007-10-27 15:38:47 · 7 answers · asked by Anonymous

At a resturant, you can choose from four omelet filings: cheese,peppers,tomatoes,and mushrooms. How many different omelets you can choose from with three different fillings.

P.S., orde does not matter. I need the formula, not the answer. thank you.

2007-10-27 15:20:41 · 7 answers · asked by Anonymous

2007-10-27 15:18:01 · 7 answers · asked by Anonymous

2007-10-27 15:07:26 · 1 answers · asked by Anonymous

Is it a power notation or a multiplication indicator?

2007-10-27 15:05:48 · 12 answers · asked by boilermakersnoopy433 4

How to determine the value? Show me the workings?

Don't ask me to use a calculator..This question came out in paper 1 where calculator is not allowed.

2007-10-27 14:58:45 · 3 answers · asked by Anonymous

2007-10-27 14:57:24 · 3 answers · asked by nikeboy9_1 1

In Fantasia the airline system is organized in such a way that every city is connected to not more than three others, but even so it is possible to get from one city to another without making more than one change-over.
What is the maximum number of cities in Fantasia?

taken from
http://www.geocities.com/CapeCanaveral/Lab/4661/

2007-10-27 14:30:40 · 1 answers · asked by Mugen is Strong 7