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If the lines (2x+ay=10) and (6x+9y=30) are coincident, what is the value of (a)?यदि दो रेखाएं (2x+ay=10) और (6x+9y=30) संपाती हों, तो (a) का मान क्या है?
Answer and explanationउत्तर और व्याख्या
Correct answer:सही उत्तर: (3)(3)
For coincident lines, (\frac{2}{6}=\frac{a}{9}=\frac{10}{30}), so (a=3). All coefficients must be in the same ratio.संपाती के लिए (\frac{2}{6}=\frac{a}{9}=\frac{10}{30}), इसलिए (a=3)। सभी गुणांक समान अनुपात में होने चाहिए।
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