Friday

April 18, 2014

April 18, 2014

Posted by **Jullian B.** on Friday, June 15, 2012 at 9:24pm.

x+y=19

- Math -
**Reiny**, Friday, June 15, 2012 at 11:37pmmultiply the first by 20 to get rid of those nasty decimals

x + 2y = 26

subtract the second equation from that

y = 7

plug back into the 2nd

x+7=19

x=12

x=12, y=7

**Related Questions**

Math - 0.05x +0.10y=1.30 x+y=19

algebra - Am i doing this right? - 5y^3(y^5)2 _______________ 10y^5(y^2)^6 5y^3...

math help - 5x+10y +15z-15x+10y-5z+5x-10y-5z / (5x+10y+15z)-(15x+10y-5z)+(5x-10y...

Mat 116 - substitution method 7x +9y= 19 x=25-5y ___________ 7(25-5y)+9=19 175-...

Algebra 2 - "My husband's age," remarked a lady the other day, "is represented ...

Math --please check - What is 12% of 250? Is it 30? Is decimal notation for 19% ...

math - 1. Which exponent makes the statement true? 1/5^9 = 5^? a. 9 b. -9 c. 1/9...

math - 1. Which exponent makes the statement true? 1/5^9 = 5^? a. 9 b. -9 c. 1/9...

Math inequalitites - Hi, I need some help with some inequalitites. Thanks!! Use ...

Pre-Calculus - The monthly revenue acheived by selling x boxes of candy is ...