exam Maths Puzzle Numerical Ability

What is the answer to (1/2)^-1?

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exam Other Question

graph the equation, then choose the correct coordinates of the foci.
y^2 = 5x^2 + 25
I need help with this Quadratic Equation...

The path of a falling object is given by the function S=-16t^2+Vo(t)+So where (Vo)represents the initial velocity in ft/sec and (So)r