Mathematics - 2 October 2007

Im suppose to use a counterexample to show that DIVISION IS NOT commutative ( the property)

2007-10-02 12:41:33 · 4 answers · asked by Bluekygrrl 2

What numbers have 5 factors,3 factors and 9 factors.
Fastest and Correct & Detailed answer wins for best answer.

2007-10-02 12:40:40 · 1 answers · asked by Natty 2

In math, when you divide fractions, why do you always have to invert the divisor? I know because it is a rule and if you don't your problem will turn out wrong: but why?
If you know that's really great because I'm really curious. Thank You!

2007-10-02 12:38:01 · 9 answers · asked by Chicken Girl 5

How would I graph the line using the slope and y-intercept

2007-10-02 12:34:09 · 2 answers · asked by Anonymous

1. x + y = 7
x - y= 7

2. 6x + 7y = 19
x + y = 5

3. 3x - 6y = -3
6x + 3y = 9

2007-10-02 12:30:01 · 2 answers · asked by PIMP I 1

1. y = 2x and y=2x - 4

2. 2y + 3x = 5, 3y - 2 x 5

3. 1/3x + 2/3y = 3/5 and 2x + 4y = 7

4. 2y + 3x = 5 and 3y + 3x = 5

The help would be appreciated.

2007-10-02 12:23:08 · 4 answers · asked by PIMP I 1

how do u solve this inequality?
could you please do it in a step by step process showing all the work so i can learn how to do it?
thanks sooo much!

3>= 13x + 6 > -4

2007-10-02 12:15:23 · 3 answers · asked by Angelica 1

The directions are to name the property shown. The property can either be communutative property OR associative property.

1.) 3 x ( 8 x 4 ) = ( 3 x 8 ) x 4

2.)3 x 8 = 8 x 3

3.) 4 + 7 = 7 + 4

4.) 8 + ( 9 + 7 ) = ( 8 + 9 ) + 7

ok there are the problems.. this is what I THINK the answers should be
1.) Associative Property

2.) Commutative Property

3.)Commutative Property

4.)Associative Property

Is it correct?

2007-10-02 12:14:59 · 5 answers · asked by Animal Luverr™ 4

15x^2+4x-35=0

i know i have to factor it out...
(15x ____ ) ( x ____ )
what goes in the blanks?
and why? and is there a trick to remember how to do it quickly?
thanks so much!

2007-10-02 12:11:18 · 3 answers · asked by Angelica 1

Is it times it it by 100? Thanks guys

2007-10-02 12:08:56 · 11 answers · asked by 5ipodsathome 1

8 chips in bowl, 3 which has the number one, 2 which have the number 2 and 3 which has the number 3. the probablility of drawing each chip at random is 1/8. let random variable X is S={1,2,3} finda the probablility assignments for these three outcomes and find the mean and variance for these probablility assignments.

I am confuse as to how to approach and solve this question thanks for any help.

2007-10-02 11:54:26 · 1 answers · asked by Dr H 2

2007-10-02 11:38:01 · 3 answers · asked by r.creedon@sbcglobal.net 1

2007-10-02 11:27:26 · 8 answers · asked by davydoohoo 1

angle CDB= (8y+8)degrees. angle BDA = (5y-3)degrees, and angle ADC= 70 degrees.

find angle CDB and angle BDA




omg if you do this i will love you for life!!!!!!!!!!!:]

2007-10-02 11:25:15 · 5 answers · asked by bhattigirl23 2

2007-10-02 11:20:04 · 8 answers · asked by Anonymous

3x^2 - x +5 = 0

2007-10-02 11:19:40 · 1 answers · asked by plplz 1

My teacher always talks about how to easily find out what numbers divide into other numbers, like adding the sum of the even and odds and finding out what that number is, which divides into the original number ... I don't know if that is correct, but is there any way to figure out how to do this with large numbers? I am looking for relations in perfect squares, radicals, etc. Thanks :)

2007-10-02 11:17:46 · 2 answers · asked by Marie 2

Ok the equation is x^2+3=2x

As an answer i got 2(+)(-)2i sqrt 2 / 2. When I simplify it i get, 1(+)(-)i sqrt2 .

Is this is the right answer? How do I check? Please help. Thanks in advance.

2007-10-02 11:02:08 · 3 answers · asked by Anonymous

My math teacher told my class 11 + 3 = 2.
My question is HOW?
thnx

2007-10-02 10:51:37 · 12 answers · asked by Cookie. 2

how do you convert pounds to kilos its for science homework help please!

2007-10-02 10:41:35 · 8 answers · asked by Anonymous

I'm working on a take home quiz and so far I have 1 I'm not sure of. I have half of it done. I won't put the base but I want to make sure I combined it right. I'm thinking that it turns into a fraction because of the negative 3/4. Anyways....it's
-3/4 log (x+2) + log (2x-1)^1/2

I already know how to do the second half, it's just the first part with the -3/4 that I want to check! thanx!!!

2007-10-02 10:38:49 · 1 answers · asked by angelicasongs 5

for. ex....how could i know what is e^(ln2) ...w/o using a calculator

2007-10-02 10:25:27 · 6 answers · asked by ruby 2

NOTE: This is not homework!!

This is part of a project, Thanks!!

2007-10-02 10:18:49 · 6 answers · asked by Jeremiah Johnson 7 7

please explain how u got this answer

2007-10-02 10:11:38 · 6 answers · asked by Slim24/7 5

please explain how u got this answer

2007-10-02 10:10:15 · 4 answers · asked by Slim24/7 5

i get confused b/c e^0=1...i dont really knw the value
and what about ln..what is the value of ln..does it relate to e?

2007-10-02 09:58:47 · 11 answers · asked by ruby 2

it's about volume. a refrigerator is 3 ft wide, 2.5 ft deep and 6 ft high. The walls and other parts of the refrigerator take up 20 feet (little 3 on the top I for got the name of it). How many cubic feet are left for food?

note: If you know the answers please explain how you got it. Thank you.

2007-10-02 09:56:43 · 3 answers · asked by Anonymous

9d=2.61 What does D equal? Can you show me how you got your answer?

2007-10-02 09:54:26 · 5 answers · asked by Anonymous

.........ax+b
f(x)= ------ ..............find the inverse function
.........cx+d

ad not equal to bc

(the periods don't mean anything, I just needed to get the equation in the right spot.)

will you show me how to work this problem out?

2007-10-02 09:50:04 · 3 answers · asked by Ilovepigs 2

Some lines which are tangent to the parabola y=x^2 also pass through the point (2,3). Find all of these lines.

Can someone guide me on how to do this?

2007-10-02 09:48:31 · 3 answers · asked by Anonymous