exam Maths Puzzle Numerical Ability

solve the quadratic inequality , and graph the solution on the number line. (x+1)(x-9)less than 0

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exam Other Question

3x-2y=18 Solve the system by addition method. If unique solution does not exist, state whether they system is inconsistant or dependent.
2x-3y+z=5
x+4y-2z=-3
4x-2y+3z=6