exam
Maths Puzzle
Numerical Ability
Jackie mows a strip of uniform width around her 25m by 15m rectangular lawn and leaves a patch of lawn that is 60% of the original area. What is the width of the strip?
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exam Other Question
Evaluate the polynomial for x = -2.
3x^2 - 4x + 1
I need to get this correct and I come up with 45. Did I do this correctly?
Factor completely:
-2x to 3rd power + 16x to 2nd power - 24x