Question 348263
Hi, 

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{{{x<=3}}} represents all numbers <= 3 on the number line
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{{{x>=5}}} represents all numbers >= 5  on the number line
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Re: Compound Inequality  {{{5<=  x  <=3}}} there are no points in common, the solution set would be empty set.
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Note: In interval notation
" [a, b]"  (defines the empty set if a > b)
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"[5,3]"