This question is similar to CBSE Class 10 Sample Paper for 2021 Boards - Maths StandardPlease check the question here


CBSE Class 10 Sample Paper for 2025 Boards - Maths Standard
CBSE Class 10 Sample Paper for 2025 Boards - Maths Standard
Last updated at Dec. 13, 2024 by Teachoo
This question is similar to CBSE Class 10 Sample Paper for 2021 Boards - Maths StandardPlease check the question here
Question 2 The value of k for which the system of equations 3π₯βππ¦=7 and 6π₯+10π¦=3 is inconsistent, is (A) β 10 (B) -5 (C) 5 (D) 7Since the system of equations is inconsistent It has no solution Finding ratios ππβππβπ=π Comparing with a1x + b1y + c1 = 0 β΄ a1 = 3 , b1 = βk , c1 = β7 ππ+πππβπ=π Comparing with a2x + b2y + c2 = 0 β΄ a2 = 6 , b2 = 10, c2 = β3 ππ/ππ π1/π2 = 3/6 π1/π2 = 1/2 ππ/ππ π1/π2 = (βπ)/10 ππ/ππ π1/π2 = (β7)/(β3) π1/π2 = 7/3 Since the equations donβt have a solution π1/π2 = π1/π2 β π1/π2 1/2=(βπ)/10β 7/3 Thus, 1/2=(βπ)/10 10/2=βπ 5 = βk β5 = k k = β5 So, the correct answer is (B)