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Maths Puzzle
Numerical Ability
how do you determine the size of a system of equation please given a example and show how to solve
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a over a+1 + 2a+4 over a^2-3a-4 = 2 over a-4
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jumping rope can burn 600 calories per hour; write and solve an inequality to find the number of hours of jumping rope that it would take for you to burn at least 450 calories.