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OpenStudy (anonymous):
If a/4 = 9/a, then a²=36 4a = 9a a + 4 = 9 + a a - 4 = 9 - a
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OpenStudy (ajprincess):
Cross multiply
OpenStudy (anonymous):
thanks i have no idea what im doing:/
OpenStudy (ajprincess):
|dw:1363885769581:dw| Does that help?
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