Friday

August 29, 2014

August 29, 2014

Posted by **shelby** on Tuesday, February 26, 2008 at 8:33am.

x + 5y - 10 = 0

x = 2y - 8

i know the answer is

-20/7 , 18/7

but i have no idea how they got it so

someone

PLZ HELP!!!!

- math -
**Tracy**, Tuesday, February 26, 2008 at 9:36amThe second equation is telling you what x is..since it says " x=2y-8" this tells you that wherever you see an x you can replace it with that equation, so you would get:

(2y-8)+5y-10=0

so then you would just solve for y to get 18/7. So now you know what y is you can put that answer in either equation and solve for x. for example:

x=2(18/7)-8

so x=-20/7

- math -
**shelby**, Tuesday, February 26, 2008 at 10:28amTHKS SOOOOOO MUCH!

I get it now

again thank you so much!

- math -

**Related Questions**

Math - How do I work this math prob. I always have a B and would like to bring ...

math - the probabilities that 3 friends A,B andC pass a driving test are1/3,1/4,...

math- algebra- help please! - 3 dice are rolled let (y,r,b) represent each ...

stats - a test consists of 25 multiple choice questions. Each has 5 possible ...

math - am having prob..wv zs numb..given that f(x)=x+6/2x,find f(4) and f ...

Math check 3 - f(x) = 1/(x+7)+15/(x-8). Find all a for which f(a)=f(a+15). I ...

statistics - Use the normal dist to approx the desired prob. Find the prob of ...

Statistics - How do I plug this into the Binomial Probability Formula? prob(lost...

MATH - Adding and Subtracting Rational Expressions there are two problems I get ...

Chem - I stuck on this prob. Can you help me to do this? 10.00 mL of a solution ...