Friday

December 19, 2014

December 19, 2014

Posted by **Anonymous** on Saturday, April 28, 2007 at 4:00am.

x+y=12

5x+10y=100

y=12-x

5x+10(12-x)

5x+120-10x=100

5x-10x=2-5x=20

x4

y8

Looks good to me.

Matt

**Answer this Question**

**Related Questions**

algebra concept 1 - 1. Anna has 12 bills in her wallet, some $5 and some $10. ...

math help, correction - Anna has 12 bills in her wallet, some $5 and some $10. ...

Math - You have six $1 bills, eight $5 bills, two $10 bills, and four $20 bills ...

Math - You have six $1 bills, eight $5 bills, two $10 bills, and four$20 dollar ...

math (please check answer) - 10. You have six $1 bills, eight $5 bills, two $10 ...

Algebra Concept check - 1. Anna has 12 bills in her wallet, some $5 and some $10...

math - Please show me how to solve: Sharon has some one-dollar bills and some ...

MATH - You have five $1 bills, four $5 bills six $10 bills and three $20 bills. ...

MATH - You have five $1 bills, four $5 bills six $10 bills and three $20 bills. ...

statistics - I have 6 bills that total $63 and there are no $1 or coins? what ...