Here, a₁/a₂ = 5/7 and b₁/b₂ = -4/6 = -2/3. Since a₁/a₂ ≠ b₁/b₂, the system possesses a unique solution, meaning the lines intersect at a single point. Class 9 Maths (Ganita Manjari part two) Chapter 13 questions answer Class 9 ...
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Let their present ages be x and y. Then x – 5 = 3(y – 5) and x + 10 = 2(y + 10). Simplifying yields x – 3y = -10 and x – 2y = 10. Solving gives y ...
Yes, it holds in both cases. (i) The Midpoint Theorem on triangles formed by diagonals still ensures opposite sides are parallel and equal to half the diagonal. (ii) It degenerates into a segment when diagonal AC is parallel to BD ...
Multiply each student’s family average age by their family size to find total family years. Sum these values and divide by total members across all families for the combined mean. Class 9 maths Chapter 10 How Quantities Combine Understanding Data solutions
The given slope ratio is 1 / 12. For a total vertical height of 18 cm, the horizontal length must be 18 × 12 = 216 cm, which equals 2.16 metres. Cbse released Class 9 Ganita Manjari Part 2 book Chapter ...