Tuesday

March 3, 2015

March 3, 2015

Posted by **Marie** on Saturday, February 27, 2010 at 12:57pm.

4x-2y=9

20x-10y=27

pls help with problem. Once I get 24x -2y 36 I'm confused after that.

- Math -
**Reiny**, Saturday, February 27, 2010 at 1:44pmSomebody expects you to solve a 2 by 2 system using matrices with echelon reduced form ??

That's like going to the corner store to buy milk in an 18 wheeler tractor-trailer.

Furthermore the system has no solutions, since if you multiply the first by 5, you get

20x - 10y = 45

now subtract the two to get

0 = 18

CONTRADICTION, so no solution.

- Math -
**Marie**, Saturday, February 27, 2010 at 2:03pmThanks Reiny

**Answer this Question**

**Related Questions**

math,algebra II - I need someone to explain to me step by step the process of ...

algebra - Did I do this problem the correct way if so is there a shorter way to ...

Finite Math - Discuss the differences between the echelon method and the gauss-...

Math - I'm extemely lost at some point, how do you solve this equation by using...

math - Find the product 1. (2x)(10x) (1 point) 20x 12x 20x^2 5x 2. –3m(m + 8) (...

math - What is the difference between Gauss Jordan method and the Echelon method

alg2 check? - solve 3(8x-2)=46-2(12x+1) 24x-6=46-24x+2 24x-6=48-24x 48x-6=48 48x...

Math - 4x^3-20x^2-24x

Math - solving using the solution method. x+10y=41 x+9y=37 =

math problem - very confused could someone help me with this using the ...