exam Maths Puzzle Numerical Ability

Determine whether the ordered pair is a solution of the inequality

(-4,8); 7x+y<-9

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exam Other Question

Simplify and write the answer with all exponents positive.

w-1power t-3power s/2-2power s4power t3power A GARDENER MARKS OUT A NEW SECTION OF LAWN THAT IS SUPPOSED TO BE A RECTANGLE WITH SIDES OF LENGTH 15M AND 10M RESPECTIVELY. TO CHECK HE HAS MARKED OUT A RECTANGLE HE MEASURES THE LENGTH OF THE DIAGONAL. HOW LONG SHOULD THIS BE?