Mathematics - 27 September 2007

Solve the following system of linear equations by the Addition Method.

2(x - 1) = 17 + 3y
-4x -7 = 3y


a. Outline the steps for solving a 2x2 system by the Additions Rule
b. Solve. Which variable did you choose to eliminate? What is the solution?

2007-09-27 09:49:03 · 5 answers · asked by DoWHATiDO 3

1. is it natural whole an intiger rational or irrational
2. and wat are its divisors

Please help these are 2 things I really need help on so please take it serious

2007-09-27 09:45:05 · 2 answers · asked by sam c 2

jarvis spent $1.04 on candy mints. Each mint cost less than $0.06. how many mints did he get? estimate: A 5 B 10 C 15 D 20

2007-09-27 09:35:18 · 18 answers · asked by bodigger 1

a hamburger stand sold 25 more cheeseburgers than regular hamburgers. If it sold 100 cheeseburgers, how many regular hamburgers did it sell? solve show work

2007-09-27 09:30:27 · 2 answers · asked by bodigger 1

Help, I just can't do it! I got a ridiculous answer like -8 +/- root 27.5

which is obviously not right!

2007-09-27 09:29:31 · 2 answers · asked by Anonymous

what is the point of learning differential equations? I mean all my professor does is he writes the same types of problems and does the same thing over and over and I don't understand what the purpose is. I mean i know how to do these problems but what are they for. ie: first order diff., second order diff...etc...

2007-09-27 09:25:32 · 6 answers · asked by shadoyaj 4

i dont know if it something the teacher made up or if its some rare algebra term but it was a question asked today and no one could figure it out.
Here is a prolem:

Zingers: 9, 41, 57, 73, 17, 89, 33

Not zingers: 7, 22, 45, 8, 59, 36, 68, 13

Which of the following are zingers: 4, 55, 63, 25, 49, 24, 77, 92, 38, 42, 20, 65

What is a zinger? Explain.

You dont have to explain or watever and answer like which ones are zingers, but i just need to know wat the hell a zinger is and wat the patten or watever is. I really dont know anything about this so i pretty confused.

2007-09-27 09:15:03 · 5 answers · asked by Anonymous

if i got it wrong, plz correct me and show me the correct way to do it.
Since the problem has a pic in it, i uploaded it on photobucket.
i think the answer is
AE+EC=4268.64

the link is: http://img.photobucket.com/albums/v601/silentfiend/t.jpg

thx!

2007-09-27 09:02:45 · 3 answers · asked by NT 2

9875670 - 9875004 =

the answer is a good luck number, hahahahah!

2007-09-27 08:58:48 · 5 answers · asked by Enrique 3

2007-09-27 08:56:51 · 9 answers · asked by Erin 2

what is -2/3 divided by 12?????????? plz n thnks also -3/4 divided by 12

2007-09-27 08:53:13 · 7 answers · asked by nala 4

2007-09-27 08:31:37 · 3 answers · asked by nikki2ricki 2

Integral from 0 - 1 : (10^x)
I am utilizing the evaluation theorem for attaining my answer.

2007-09-27 08:29:28 · 2 answers · asked by sleepthei 3

What is the value of y?

2007-09-27 08:22:00 · 11 answers · asked by nikki2ricki 2

How do you find the average value of sinx between two values of x. ie the average value of sinx between x=0 and x=pi/3

2007-09-27 08:21:27 · 4 answers · asked by eazylee369 4

2007-09-27 08:19:01 · 3 answers · asked by Anonymous

2007-09-27 08:03:58 · 7 answers · asked by Anonymous

( ' × ' = Cartesian product ' ∩ ' =intersection }

How can these be proved

a) ( A - B ) × C = ( A × C ) - ( B × C )
b) A ∩ B = B - ( B - A )

(they are correct, right ?)
I didn't find any example that would prove them wrong.
What laws can I use to prove them right ?
Would be helpful if you could give me the steps needed.
Thanks.

2007-09-27 08:00:38 · 4 answers · asked by Anonymous

as a= (7,-2,-2)

2007-09-27 07:55:11 · 2 answers · asked by garrett m 1

I need help with this question. Ok the question is.

Mr. Harris is planning to have a court yard area sodded. The sod comes in rolls that are 3ft long by 1ft wide. IF the courtyard measures 60ft by 50ft, which of the following represents the number of rolls of sod needed?

a. 60 x 50
b. 60 x 50 divided by 3
c. 60 x 50 x 3
d. (60 + 50) divided by 3
e. (60 + 50) x 3

Please help me with this question and exsplain to me how you the answer!
~Thanx

2007-09-27 07:54:43 · 8 answers · asked by Anonymous

According to wiki:
http://en.wikipedia.org/wiki/Normalizing_constant

The denominator of the Bayes theorem formula should be the probability of producing the data, but on its own is difficult to calculate. So how come it's difficult to calculate? And why can't we calculate it by finding the joint priori probability of the evidences?

Please refer to my another question:
http://answers.yahoo.com/question/index;_ylt=AmcLvBNJBUk31tqpMNlK1BDsy6IX;_ylv=3?qid=20070927031725AAAfbNB

I have been stuck in this denominator for a few weeks, please help.
Thank you very much. (don't give me advertisements)

2007-09-27 07:51:33 · 2 answers · asked by I need answers 1

Which set of 6 numbers is most likely to come up in Lotto?

A. 32 12 23 7 15 3
B. 1 2 3 4 5 6 7
C. The chances are equal.

2007-09-27 07:48:13 · 10 answers · asked by Feeling Mutual 7

part 2) factorise 8! - 4 (7!) ; 7!/3!4 + 7!/2!5!

2007-09-27 07:38:02 · 5 answers · asked by astalavista 1

y = 2 - x
x^2 + 2xy = 3

I know you have to do this:

2 - x = x^2 +2xy -3

but when I try to solve it I always get a quadratic that just can't factorise, help!

2007-09-27 07:34:45 · 5 answers · asked by Anonymous

2007-09-27 07:34:06 · 7 answers · asked by Ivonne G 1

2007-09-27 07:26:24 · 4 answers · asked by Ivonne G 1

2007-09-27 07:21:44 · 8 answers · asked by astalavista 1

2007-09-27 07:07:11 · 6 answers · asked by searrah m 1

solve by substitution

3x-4y=x-y+4
2x+6y=5y-4

I tried to work it out on scratch paper, still stumped.

2007-09-27 06:59:31 · 12 answers · asked by Cat C 1

*The cost of 12 oranges and 7 apples is $5.36. Eight oranges and 5 apples cost $3.68. Find the cost of each orange.


*Sam invested a total of $10,000, part at 8% and the rest at 3%. How much was invested at 8% if he earned a total of $600 in one year? (Use the formula , Interest = principal * time * rate)


*In an office there was a small cash box. One day Jane took half of the money plus $1 more. Then Mike took half of the remaining money plus $1 more. Rob then took the remaining $6. How many dollars were originally in the box?


*The sum of two numbers is 8 less than twice the first number. Their difference is 4 less than twice the second number. What is the larger number?

2007-09-27 06:52:33 · 5 answers · asked by Anonymous