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OpenStudy (anonymous):
12x – 3x + 11 > 4x – (17 – 9x) = x < 7??
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OpenStudy (anonymous):
12x - 3x + 11 > 4x - (17 - 9x) 9x + 11 -4x > -17 + 9x - 4x + 17 + 11 > 0 - 4x + 28 > 0 - 4x > - 28 x > 7
Directrix (directrix):
I got x < 7. Lemme check my work.
Directrix (directrix):
Final Answer: x < 7 @MelindaR Error: - 4x > - 28 x > 7 ------> should be x < 7 since you divided an inequality by a negative.
OpenStudy (anonymous):
That's correct, if it was an equality the both negative would turn into positive, but since it's an inequality... is that it?
Directrix (directrix):
Yes.
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OpenStudy (anonymous):
Thx
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