Mathematics - 26 September 2006

Let a and b be any two mutually prime positive integers where a < b. Then a/b is a rational number less than 1, while b/a is a rational number greater than 1.

Clearly, there are the same number of a/b numbers as there are b/a numbers, since the integer I put in the numerator is arbitrary. Also, I know that every rational number between 0 and 1 can be expressed as a/b, while every rational number greater than 1 can be expressed as b/a.

Does this mean the number of rational numbers between 0 and 1 is the same as the number of rational numbers between 1 and infinity?

2006-09-26 11:21:35 · 8 answers · asked by Anonymous

Two - Step Eqaution

Beneath Earth's surface, the temperature increase 10 Celuis every kilometer. Suppose that the surface temperature is 22 Celusis,and the temperature at the bottom of a gold mine is 45 Celusis. what is the depth of the gold mine?

Please help and please how you got the answer.

2006-09-26 11:04:52 · 11 answers · asked by Anonymous

Answers could be
1. 6 to 2
2. 2 to 6
3. 8 to 4
4. 6 to 6

When i do it i always come up with 8 to 12.. but its not one obviously

2006-09-26 10:57:06 · 8 answers · asked by Madcat 2

its fractions

2006-09-26 10:25:35 · 17 answers · asked by Anonymous

Given that someone is considered "very good" (lets call that B) what is the probability of this person does not meet requirements for a certain criteria (lets call that A) so basically what is the probabilty of A given B. how do i calculate that?

2006-09-26 10:24:08 · 2 answers · asked by vimpact2000 1

Im no good at maths and I need some help please

684.000 ( My start tinging number )

149.000 ( )
149.000 ( I need these subtracting from the above Number)
140.000 ( )
120.000 ( )



What number am I left with?


Thanks

2006-09-26 10:07:53 · 13 answers · asked by Anonymous

2006-09-26 09:53:01 · 12 answers · asked by GABE_1 2

In order to earn an A in a course, a 85% average is needed. There are 4 regular tests, and a final exam which is weighted twice as much as a regular test. If the test scores are 95%, 79%, 89% and 97%, what is the lowest final exam % score that will result in a final grade of A?

I got to the point where 16 2/3% is the weight of the regular test and 33 1/3% would be the weight of the final exam, but im not sure how to set up an equation from there... thanks for the help

2006-09-26 09:50:35 · 11 answers · asked by NOooob! 1

2006-09-26 09:45:01 · 9 answers · asked by brian will 1

2006-09-26 09:35:14 · 4 answers · asked by brian will 1

2006-09-26 09:33:07 · 3 answers · asked by brian will 1

in to how many divisions do "100" lines divide the surface?
in condition that no 3 lines passe one dot.

2006-09-26 09:31:18 · 4 answers · asked by MaK 1

2006-09-26 09:21:34 · 8 answers · asked by brian will 1

2006-09-26 09:17:52 · 3 answers · asked by brian will 1

what does A.D. stand for ......like the time like B.C. is before christ what A.D.?

2006-09-26 09:10:46 · 8 answers · asked by Emily Rose 2

2006-09-26 09:03:00 · 4 answers · asked by mark g 1

what is the largest interger that is not the sum of two or more different primes?

also what is the only cube that is ne less than a square?

2006-09-26 08:49:40 · 7 answers · asked by mystic monkey 1

A circular pool has a diameter of 12 feet. About how much water is needed to fill the pool to a depth of 4 feet?

a. 75 cubic feet
b. 150 cubic feet
c. 450 cubic feet
d. 1,800 cubic feet

2006-09-26 08:48:00 · 7 answers · asked by JoAnna 2

My six year old has a homework question that says draw something that is the same mass as you.

Firstly what is mass in terms that I can explain to a six year old.

Secondly what is a likely household object or something around us that would be the same mass?

I was hopeless at maths in school!

2006-09-26 08:45:53 · 11 answers · asked by T 3

Our assumption is Y is a non-empty set and we denote ~ be an equivalence relation on Y. We let W be the set of distinct equivalence classes given by ~. prove that elements of E are disjoint and their union is all of X.

please help. thank you.

2006-09-26 08:36:02 · 3 answers · asked by David F 2

1. a set of data contains 10 negative numbers and 4 positive numbers. Which one of these statements must be true?
a. the mean is a negative number
b. the median is a negative number
c. the mode is a negative number
d. the range is a negative number



2. Which expression represents 270,000 written in scientific notation?
a. 270 x 10^3
b. 27 x 10^4
c. 2.7 x 10^5
d. 0.27 x 10^6

2006-09-26 07:30:08 · 9 answers · asked by JoAnna 2

2006-09-26 07:17:39 · 14 answers · asked by SheliaTurns 1

Can someone help me factor this i've been having trouble with it all week x^3 - x^2 - 5x - 3. Thanks a lot

2006-09-26 07:01:15 · 9 answers · asked by Anonymous

I need to write this out the normal way like "211" not in letters... I guess I missed that day in class back in second grade, lol

Can Anyone tell me what CCXLVII stands for?!

2006-09-26 06:56:54 · 17 answers · asked by MattMan 3

Is it possible to have them all irrational?

2006-09-26 06:53:19 · 6 answers · asked by springdaletutor 1

2006-09-26 06:47:20 · 17 answers · asked by Anonymous

2006-09-26 06:45:51 · 5 answers · asked by praveena k 1

I mean, greek numbers seams too dificult to do mathematics (algebra).

2006-09-26 06:38:31 · 5 answers · asked by Chapadmalal 5

2006-09-26 06:33:33 · 11 answers · asked by praveena k 1

Any one know how to do this

Find the equatiobs if the lines parallel to the line 3x+4y-6=0 and which are tangents to the circle x(squared) + y(squared) - 2x - 2y - 7 = 0

2006-09-26 06:28:26 · 5 answers · asked by Anonymous