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If the lines (7x+by=21) and (14x+10y=50) are distinct parallel lines, what will be the value of (b)?यदि (7x+by=21) और (14x+10y=50) की रेखाएं समांतर अलग-अलग हों, तो (b) का मान क्या होगा?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (5)(5)
For parallel lines, (\frac{7}{14}=\frac{b}{10}), so (b=5). Since (\frac{21}{50}\neq\frac{1}{2}), the lines are not coincident.समांतर के लिए (\frac{7}{14}=\frac{b}{10}), इसलिए (b=5)। क्योंकि (\frac{21}{50}\neq\frac{1}{2}), रेखाएं संपाती नहीं हैं।
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