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OpenStudy (anonymous):
Find the missing value: -2/5· ? = 1 please help..
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Directrix (directrix):
-2/5· ? = 1 Multiply by sides of the equation by -5/2 (-5/2 * -2/5) · ? = 1 * -5/2 1 * ? = -5/2 ? = -5/2
Directrix (directrix):
(-5/2 * -2/5) are reciprocals of each other and multiply to 1.
Directrix (directrix):
@chandlerm
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