exam Maths Puzzle Numerical Ability

Graph the solution set of each of the following inequalities.
18. x > 4

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exam Other Question

the polynomial 0.041h-0.018a-2.69 can be used to estimate the lung capacity in liters of a female with h in cm and age (a) in years ,find the lung capacity of a 40 yr old woman who During the first part of a canoe trip, covered 81 miles at a certain speed. He then traveled 18 mile at a speed that was 5 slower. If the total time for the canoe trip was 5 hr, what was his speed on each part of the trip?