exam Maths Puzzle Numerical Ability

The length of a rectangular playing field is 5 feet less than twice its width. If the perimeter of the playing field is 230 feet, find the length and width of the field.

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exam Other Question

Please help me with this logic problem. It is to construct a truth table. The problem reads (p ^ q) execlusive or r. I have a table that shows the answer as T,F,F,T,F,F,T,T,F Find the real zeros of f. Use the real zeros to factor f.

f ( x ) = x ^ 3 + 8x ^2 + 11x - 20