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OpenStudy (anonymous):
Solve the compound inequality. Write the solution in interval notation. 3x+7 _< -8 and 3x _< 0 The solution set of the compound inequality is ___ type answer in interval inequality
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OpenStudy (anonymous):
3x+7 <= -8 3x =< 0 --> x <= 0 3x <= -8 -7 3x <= -15/3 ->x <= -5 => x < -5 Thus x belongs to ( - inf, -5 )
OpenStudy (anonymous):
Let me know if you need more explanation!
OpenStudy (anonymous):
I put in (-inf, -5) into the hw database and it told me wrong
OpenStudy (anonymous):
Did you double check your post? and the way I solved it?
OpenStudy (anonymous):
Yeah, it says the interval notation a parenthesis indicates an open interval which does not include the value, while bracket indicates a closed interval which includes the value.
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OpenStudy (anonymous):
Oh, try this ( -inf, 0] U [ 0, -5 )
OpenStudy (anonymous):
It ended up being, (-inf, -5]
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