exam Maths Puzzle Numerical Ability

A hyperbola with question 25x^2 - 16y^2 = 400 has asymptotes of

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exam Other Question

angle BFA and angle DFE are vertical angles. If angle BFA=3r+12 and the measure of angle DFE=-8r+210, what is the measure of angle AFE? If an angle is acute, then its complement must be greater than its supplement. True or false?