Monday
March 30, 2015

Homework Help: math

Posted by deedee on Tuesday, January 6, 2009 at 2:23pm.

Can someone please check my work?

Solve using substitution method

1. 3x+2y=12
x=52-6y
answer:-40.8 I am pretty sure that one is wrong.

Solve using elimination method

2. 2r-7s=-31
7r+2s=24
answer: (230/53,-468/53)

3.3x+4y=3
6x+8y=6
answer: No answer. problems eliminate eachother

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