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July 29, 2014

July 29, 2014

Posted by **Liz** on Sunday, September 7, 2008 at 5:31pm.

- Math (alg 2) -
**Reiny**, Sunday, September 7, 2008 at 6:35pmtwo numbers: x and y

x/y = 3/2 or y = 2x/3

x^2 - y^2 = 20

x^2 - 4x^2/9 = 20

9x^2 - 4x^2 = 180

5x^2 = 180

x^2 = 36

x = ±6

if x = 6, then y = 4

if x = -6 then y = -4

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