exam Maths Puzzle Numerical Ability

Solve the following inequality for x. Express your interval notation. Show your algebraic steps.

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exam Other Question

0.21x= 1.2-0.15x. what does x equal Solve the system of equations using a 3x3 matrix.

5x + 5y + z=24
5x - 5y -z=26
3x + y + 2z=22