alleryA=[[x,1],[0,y]], B=[[1,2],[3,1]]. AB has first column [5,9]. Find x+y.
A5
B8
C3
D6
Answer & Solution
Correct answer: A. 5
The first column gives x+3=5 and 3y=9, hence x+y=2+3=5.
Keep practising Algebra: Equations, Inequations & Matrices
Browse all Algebra: Equations, Inequations & Matrices questions for ICSE Class 10, or explore more Mathematics topics.
Related questions
The smallest natural number that satisfies x > 4 isA linear inequation in one variable can be written asSolve x + 3 > 5, then x belongs toSolve (2 x - 5) / 3 >= 1 over integers.Solve -2 (x - 3) <= 4. Then x belongs toSolve 2 x + 5 > 11, then x belongs toSolve (x + 2)/3 - (x - 1)/2 <= 1. Then x belongs toThe largest integer x satisfying 3 x - 4 < 2 x + 5 is