exam Maths Puzzle Numerical Ability

z^2+5z-14=0

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exam Other Question

Find all sets of two consecutive even integers whose sum is no greater than 30 if five times the lesser of the two consecutive even integers is more than four times the greater. the distance from philadelphia to sea isle cit is 100 miles, a car was driven this distance using tires with a radius of 14 inches. how many revolutions of each tire occurred on the trip?

thank you so much for the help