exam Maths Puzzle Numerical Ability

2x-y+z=3
x+3y-2z=11
3x-2y+4z=1

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exam Other Question

log base x of 81=4 A map has a scale of 1 centimeter : 8 kilometers. Use the given actual distance to find the distance on the map.

30. 4 km

Any help with this equation would be Greatly</b> appreciated.