exam Maths Puzzle Numerical Ability

Two airplanes leave an airport at the same time.The heading of the first is 120 degrees and the heading of the second is 320 degrees.If the planes travel at the rates of 700 mph an

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2. (4 points) Write down all possible subsets of {a, b, c, d} Factor each of the following trinomials completely

x^2 - 11x - 60