Mathematics - 23 August 2007

I'm trying to help my daughter with homework and I cant figure this thing out. I have searched yahoo - google - msn... nothing gives a formula or how-to examples. Please help.

2007-08-23 16:51:03 · 8 answers · asked by bobndew 3

Simplify: (2y-4(2x/3y^2)) / y^3

What are the steps to simplify this?

2007-08-23 16:36:25 · 2 answers · asked by Anonymous

1. In the expression a x b, the expressions a and b are called_____.
2. The _____ _____ states that a x (b + c) = a x b + a x c.
3. The additive inverse of a, -a is also called the _____ of a. The multiplicative inverse of a, 1/a, is also the _____ of a.
True or False
4. the absolute number of a number is alwyas positive.
5. Addition and multiplication are communitive.
6. We call 0 the additive identity and we call 1 the muliplicative identity.
QUESTION
7. What is the additive inverse of 0?

2007-08-23 16:36:02 · 3 answers · asked by Stephani K 1

2007-08-23 16:10:38 · 7 answers · asked by Anonymous

this is for my algebra class

2007-08-23 16:09:29 · 6 answers · asked by pepmey09 1

I'm more interested in how it's done than in the answer.

2007-08-23 15:41:52 · 3 answers · asked by math q 2

x^3-4x^2-3x-10,x-5

2007-08-23 15:38:31 · 2 answers · asked by luicanna 1

can someone please tell me step by step how to get the answer


X
7 = 3 (of course the "x" is small)


AND this one


log6 4+log6 9 (the "6's" are small.

AND

f(x)=x squared-kx+1. If f(2)=3...then k=?

2007-08-23 15:36:07 · 3 answers · asked by AmericanBulldogLover 1

true or false questions....
1. the rational numbers are a subset of irrational numbers.

2. if a number is expressed as a decimal, then it is rational.

3.every rational number is a real number.

4. if a number is rational, it cannot be irrational.

Please help me with this and i have more to come i'm just doing a lil at a time

2007-08-23 15:17:03 · 3 answers · asked by Stephani K 1

1) (7^4)a^3b^2c

2) 5(x+y)(x-y)

2007-08-23 15:03:02 · 2 answers · asked by Anonymous

the three im stuck on are
(x-2)(3-x)>0
x^4-1<0
(x-2)/(x-3)>or equals to 0

PLEASE HELP!!!

2007-08-23 15:02:42 · 3 answers · asked by Anonymous

Ok I have this worksheet and I cannot find these symbols anywhere can you please help me -
[dot] P
p[arrow]q
q[arrow]p
~p[arrow]~q
~q[arrow]~p
p<->(thats supposed to be an arrow going 2 sides)

thanks so much!!!

2007-08-23 15:01:22 · 3 answers · asked by no one 5

can anyone explain wha each variable emans in teh formula
K = No * e^(kt)

It ahs to do with finding the popualtion growth rate over periods of time.?

2007-08-23 14:58:16 · 4 answers · asked by Tangoant 1

and no 2 lines lie in the same place its a math question.///

2007-08-23 14:51:49 · 4 answers · asked by mike 1

2007-08-23 14:46:11 · 3 answers · asked by Ase 2

so using y2-y1/x2-x1 = 3-2/1-4= -1/3 right? so what next? and why?does it involve y=mx+b?

2007-08-23 14:40:21 · 2 answers · asked by shayne t 2

http://s40.photobucket.com/albums/e215/xxs3xp1stolxx/?action=view¤t=15.jpg

2007-08-23 14:40:16 · 1 answers · asked by Anonymous

A backyard has a swimming pool that measures 20ft by 35ft. The backyard has a perimeter of 360ft and a width of 70ft. What is the area of the backyard not including the pool?

2007-08-23 14:38:01 · 7 answers · asked by Anonymous

How many sides does a polygon with an interior angle measure of 120 degrees have? Show your work.

2007-08-23 14:37:20 · 2 answers · asked by Anonymous

2007-08-23 14:36:31 · 5 answers · asked by Anonymous

Find the width of a rectangle if the length is 12 cm and the perimeter is 40 cm.

5 cm

8 cm

16 cm

28 cm

2007-08-23 14:28:35 · 8 answers · asked by Anonymous

http://i40.photobucket.com/albums/e215/xxs3xp1stolxx/9.jpg

2007-08-23 14:28:16 · 1 answers · asked by Anonymous

Let's solve the equation x^x^x^x^... = 2, where x^x^x^x^... has infinite exponents. To solve it, the x^x^x^x^... in the exponent has to equal 2 as well, so we get x^2 = 2, or x = √2.

Using the same technique for the equation x^x^x^x^... = 4, we get x^4 = 4, and x = 4^(1/4) = √2. However, we also showed that x^x^x^x... = 2, therefore 2 = 4, right??

2007-08-23 14:28:16 · 2 answers · asked by Anonymous

2007-08-23 14:27:22 · 2 answers · asked by W 1

Find the height of a triangle with area of 81 square centimeters and a base of 9 cm.

9 cm

18 cm

182.25 cm

364.5 cm

2007-08-23 14:18:25 · 2 answers · asked by Anonymous

2007-08-23 14:16:49 · 2 answers · asked by Ellen 4

I need to know if the transcendental numbers closed under the operations of addition, subtraction, multiplication, and division. I also need to know why or why not. I also need to know if the imaginary numbers are closed under those operations. I also need to know where I can find the information on the internet.

Thank you.

2007-08-23 14:15:41 · 2 answers · asked by Anonymous

2007-08-23 14:09:27 · 2 answers · asked by math q 2

2007-08-23 13:55:58 · 2 answers · asked by Christy M 3

ok. now in a math question, sometimes you will read this... "where a,b,and c € R" . (the R is really bold) or you will see a sequence and it will say at the end " where x € Z (the Z is really bold " ok, well what does all that mean? the whole "€ R/ Z/ N " is it important? what should i look for in a math problem when i am given that info.

ex. P(z)= Z^3 + aZ^2 + bZ + c, where a, b, and c € R. two of the roots of P(z) = 0 are -2 and ( -3 + 2i ). Find the value of a, of b, and of c.

see, like that prob. so what would i look for? hmm...

oh, and if anyone knows the answer to the ex. math prob. i gave, lol, can you help me with it? i dont know the answer . thanx.

2007-08-23 13:45:11 · 7 answers · asked by Anonymous