exam
Maths Puzzle
Numerical Ability
A weight of 200 grams is 40 cm from the center support of a stick . Where would a weight of 400 grams balance the stick?
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Help! I need help with a couple of problems.
1. Solve the inequality. Give the solution set in interval notation and graph it. x^2-2x-3>0
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2.Find the real number c such that x^2-2/3x+c is a perfect square trinomial.
The elevator in the Washington Monument takes 75 seconds to travel 500 feet to the top floor. What is the speed of the elevator in miles per hour? Give your answer to two significant digits.