exam
Maths Puzzle
Numerical Ability
An airplane flew 4 hours with a 25 mph tail wind. The return trip against the same wind took 5 hours. Find the speed of the airplane in still air. .
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exam Other Question
Given: f(x)= 7-2x and g(x)= 2x^2-1, find (f-g)(x) and (f*g)(x).
Thank you for you help!
Matt
Rationalize the denominator:
2
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√[6] - √[5]