असमानता \(9\le 5-2x<15\) का सही number line interval कौन-सा है?
Which is the correct number line interval for \(9\le 5-2x<15\)?
Explanation opens after your attempt
Correct Answer
A. ((-5,-2])
Concept
\(4\le -2x<10\) gives \(-5<x\le -2\) after negative division. In exams, endpoints also reverse when dividing a compound inequality by a negative.
Why this answer is correct
The correct answer is A. ((-5,-2]). \(4\le -2x<10\) gives \(-5<x\le -2\) after negative division. In exams, endpoints also reverse when dividing a compound inequality by a negative.
Exam Tip
\(4\le -2x<10\) से negative division के बाद \(-5<x\le -2\) मिलता है। परीक्षा में compound inequality को negative से divide करते समय endpoints भी उलटते हैं।
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