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November 20, 2014

November 20, 2014

Posted by **CHLOE** on Monday, February 11, 2008 at 6:04pm.

- MATH -
**mk-tintin**, Monday, February 11, 2008 at 6:07pmtwo numbers: x,y

x-y=16

5y=8-3x

u have to solve this system

- MATH -
**CHLOE**, Monday, February 11, 2008 at 6:11pmHOW DO YOU SOLVE 5Y=8-3X? (BIG HELP)

- MATH -
**mk-tintin**, Monday, February 11, 2008 at 6:15pmL1: x-y=16

L2: 5y=8-3x

in L1: x=16+y

so in L2 : 5y=8-3*(16+y)=8-48-3y

so 8y=-40

y=-5

in L1 : x-y=16

x-(-5)=16

x=11

if u don't understand this, u have to read your math lesson

- ALGEBRA -
**CHLOE**, Monday, February 11, 2008 at 6:23pmTHE PRICE OF A SWEATER IS $5 LESS THAN TWICE THE PRICE OF A SHIRT. IF FOUR SWEATERS AND THREE SHIRTS COST $200, FIND THE PRICE OF EACH SHIRT AND EACH SWEATER? HOW DO YOU SET UP THIS PROBLEM?

- MATH -
**mk-tintin**, Monday, February 11, 2008 at 6:25pmx=price of a sweater

y=price of a shirt

the system is: x=2y-5

4x+3y=200

so try to solv the system

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