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For which value will (3x+7y=21) and (6x+14y=k) be distinct parallel lines?किस मान पर (3x+7y=21) और (6x+14y=k) की रेखाएं समांतर अलग-अलग होंगी?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (k=40)(k=40)
The coefficient ratio is (\frac{1}{2}), so coincidence needs (k=42). For (k=40), the lines are distinct and parallel.गुणांक का अनुपात (\frac{1}{2}) है, इसलिए संपाती होने के लिए (k=42) चाहिए। (k=40) पर रेखाएं समांतर अलग-अलग हैं।
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