Mathematics - 6 October 2007

Okay, well, I have a couple questions in one, so please answer and I'll be VERY happy! thank you

1) Is an equation with cubed in it at anytime a hyperbola? I mean, will you get a hyperbola with a function with 'cubed' in it?

2) How do solve an equation with cubed in it? For example, 2^3 + 4 = 12. i know its easy, but how do u properly solve it?

3) x^2/a^2 - y^2/b^2...the hyperbola function..HOW DO YOU DO IT!!!! lol

4) How do you get a parabola that is facing left or right, not up or down?

2007-10-06 12:26:31 · 2 answers · asked by AHauntingNearU 2

Why it is necessary to reverse the inequality symbol when multiplying both sides of an inequality by a negative number?

Can you give an example!!!

2007-10-06 12:21:12 · 5 answers · asked by Anonymous

What percent of a yard is a foot?

Explain how you got your answer.

2007-10-06 12:00:55 · 12 answers · asked by Revinder 2

2007-10-06 11:30:24 · 8 answers · asked by madalena d 1

One of my professors had this comic on his door- it shows a cat looking at a table with many triangles and angles drawn on it, as if the cat was calculating serious trig before making its jump.

Does anyone know where I can find this online? I'd love to have a copy of it!!!

2007-10-06 11:12:01 · 1 answers · asked by John 1

Al(OH)3=H2SO4--->Al2(So4)3+H2O
Fe+O2--->Fe2O3
C7H6O2+O2--->CO2+H2O
H2SO4+HI--->H2S+I2+H2O
FeS2+O2--->Fe2O3+SO2
Al+FeO--->Al2O3+Fe
Fe2O3+H2--->Fe+H2O
Na2CO3+HCl--->NaCl+H2O+CO2
K+Br2--->KBr
C2H2+O2--->CO2+H2O

2007-10-06 10:46:46 · 2 answers · asked by BahamaBabi 1

hey guys : a problem with this sequence : u(n) = n²(2/3)^n
i found in a book that :
lim n²(2/3)^n = o
but i don't get it, cause as far as i know :
lim n² = +infinity and lim (2/3)^n = 0 lim n²(2/3) = +infinity x 0 wich is an indefinite form....
help me know why it would be 0, i'd really appreciate it ...

2007-10-06 10:42:16 · 4 answers · asked by pepperdawgg 1

i need help dividing 3/4 by 1/2

2007-10-06 10:38:34 · 11 answers · asked by Alicia C 1

1/2(arcsin)3/2pie

Like idk how to input this into my calculator, it makes a domain error, but i can reference it to a 0-2pie interval. I dont know how ,can anyone show me plz

2007-10-06 10:30:10 · 3 answers · asked by Anonymous

1)Find the center, vertices, and foci for the ellipse: 4x^2+36y^2=144

2) Find the equation of a parabola with its vertex at the origin if its directrix is y = -5
[A] y=20x^2
[B] y= (1/20)x^2
[C] x= (1/20)y^2
[D] x= -5y^2

3) Identify the conic defined by the following equation: 36x^2 = 25-25y^2

4) Solve: x^2 + y^2=16,
((x^2)/4) - ((y^2)/9) = 1

Thank you!!! Any help at all is greatly appreciated!

2007-10-06 10:20:21 · 2 answers · asked by Anonymous

2007-10-06 10:20:20 · 5 answers · asked by Ab-bo 2

789x654(divided by)4792+193=????

2007-10-06 10:08:20 · 4 answers · asked by Erik G 1

here we go:

Going into the final exam, which will count as two tests, Brooke has test scores of 80,83,71,61, and 95. What score does Brooke need on the final in order to have an average score of 80?


need help coming up with the formula to solve

thank you in advance.

2007-10-06 10:03:30 · 7 answers · asked by dreamerchacho 2

A)y – 2 = (x + 1) and y – 2 = - (x + 1)

b)y + 1 = (x + 2) and y +1 = - (x + 2)

c)y +2 =(1/2) (x + 1) and y + 2 = -(1/2) (x - 4)

d)y + 2 = (x + 1) and y + 2 = - (x + 1)

2007-10-06 09:33:35 · 2 answers · asked by Ash O 1

*Direct proof, with some notes on the side, if not a hassle, makes best answer*

Suppose that A is a nonempty set of real numbers that is bounded. Prove that inf A is less than or equal to sup A

2007-10-06 09:22:36 · 2 answers · asked by Anonymous

hi! i have this math question could oyu plz help me?
why is another way to describe 6 billion is 6000 million?

also,
could you make an equation that you must answer using the order of operations(BEDMAS)? the answer to it must be 6 billion.pllease and thank you.best answer gets 5 points, but in your answer you must tell me how to give you points or i will check it up in faq or somethng tanks so much!

2007-10-06 09:18:30 · 3 answers · asked by Anonymous

need help with my homework!

2007-10-06 09:05:35 · 8 answers · asked by Anonymous

i have looked ALL over the place and found many articles about the Fundamental Theorem of Algebra, yet none of them seem to make any sense to me. I am only in Algebra 1 and the discriptions of the theory are too hard for me to understand. I would really appreciate if someone could explain it on MY level or give me a link to an article that explains it in an EASY WAY!! PLEASE HELP ME!!

2007-10-06 08:39:34 · 5 answers · asked by ? 1

Particularly I am talking about the answer in terms of n of following:
Sum from i=0 ... n-1 of the following:
(3^i) * (2^(n-i) * (n-i)

2007-10-06 08:33:24 · 3 answers · asked by iloveusa 2

Factor completely. 40x^2 – 2xy – 24y^2

2007-10-06 08:19:52 · 6 answers · asked by trevor s 2

ok, the question is to find the limit as x approaches infinity of (x^3 - 5x^2 + x + 2)^(1/3) - x

I know that as x goest to infinity the small powers of x and the constants become insignificant, and the problem becomes
(x^3 - 5x^2)^(1/3) - x = or x(1 - 5/x)^(1/3) - x

but I don't see how you go from

x(1-5/x)^(1/3) - n
to:
x(1 - 5/(3x) + O(1/x^2)) - x

can someone explain this step in detail, thank you

2007-10-06 08:17:57 · 3 answers · asked by Anonymous

In regular hexagon RSTUVW with center X, ST =feet.

a. Find the area of triangle STX.
b. Find the area of hexagon RSTUVW.
c. Describe two different methods for finding the area of hexagon RSTUVW.

http://tinypic.com/view.php?pic=2qnabdu&s=2

2007-10-06 08:09:14 · 3 answers · asked by Anonymous

2007-10-06 07:56:36 · 1 answers · asked by Anonymous

Prove that any set of 10 distinct integers between 1 and 100, has two subsets with the same sum.

2007-10-06 07:40:22 · 3 answers · asked by Phineas Bogg 6

ok so how many prime factors can u find of 3 (to the 30th power) minus 1 without a calculator?? i need an explanation 2 plz
thxx!!

2007-10-06 07:24:10 · 3 answers · asked by XXyeaaboiiiXX 2

I need help with writing function rules for tables. Here are two examples, please help! Thanks! = ]

x | y
-2 -3
-1 -1
0 0
1 3
2 5




x | y
-4 2
-2 1
0 0
2 -1
4 -2

2007-10-06 07:21:08 · 3 answers · asked by Vanessa 4

Prove that there exist two (not necessarily distinct) irrational numbers a and b such that a^b is rational. Please only use facts about irrationality know to the ancient Greeks. For example, the ancient greeks would not have known about logs.

2007-10-06 07:20:56 · 3 answers · asked by Phineas Bogg 6

If no how do you solve it.

2007-10-06 07:17:12 · 3 answers · asked by zumakosh 1

Can someone provide me websites for more matrix problems?? Please?? I need to practice! Thnks

2007-10-06 07:14:30 · 2 answers · asked by Anonymous

given that current world population is 6.45 * 10^9 and increasing at the rate of 1.14% per year, calculate the number of years it would take for the world population to double at the current rat

2007-10-06 07:09:25 · 3 answers · asked by Anonymous