exam Maths Puzzle Numerical Ability

ln(5x-2)=12

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exam Other Question

A light plane flew from its home base to an airport 255 miles away. With a headwind, the trip took 1.7 hours. The return trip with tailwind took 1.5 hours. Fine the average airspeed of the plane and the average wind speed. In a right triangle, the hypotenuse has length 14 cm. and another side has length 12 cm. What is the length of the altitude that is perpendicular to the hypotenuse?