CBSE Class 10 Sample Paper for 2025 Boards - Maths Standard
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CBSE Class 10 Sample Paper for 2025 Boards - Maths Standard
Last updated at February 11, 2025 by Teachoo
This question is similar to CBSE Class 10 Sample Paper for 2021 Boards - Maths StandardPlease check the question here
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Transcript
Question 2 The value of k for which the system of equations 3š„āšš¦=7 and 6š„+10š¦=3 is inconsistent, is (A) ā 10 (B) -5 (C) 5 (D) 7Since the system of equations is inconsistent It has no solution Finding ratios ššāššāš=š Comparing with a1x + b1y + c1 = 0 ā“ a1 = 3 , b1 = āk , c1 = ā7 šš+šššāš=š Comparing with a2x + b2y + c2 = 0 ā“ a2 = 6 , b2 = 10, c2 = ā3 šš/šš š1/š2 = 3/6 š1/š2 = 1/2 šš/šš š1/š2 = (āš)/10 šš/šš š1/š2 = (ā7)/(ā3) š1/š2 = 7/3 Since the equations donāt have a solution š1/š2 = š1/š2 ā š1/š2 1/2=(āš)/10ā 7/3 Thus, 1/2=(āš)/10 10/2=āš 5 = āk ā5 = k k = ā5 So, the correct answer is (B)
