exam
Maths Puzzle
Numerical Ability
solve the equation by finding square roots.
2x^2 = 14
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exam Other Question
an airplane flies 1449 miles against the wind and 1539 miles with the wind in a total time of 5hours. the speed of the airplane in still air is 600mph. what is the speed of the wind ?
Decide whether or not the functions are inverses of each other.
f(x)=(x-4)^2, x≥4; g(x)= sqrt(x+4)