exam Maths Puzzle Numerical Ability

please help to simplify

2x^2/a + a

DIVIDED by

y^2/a - 3a

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exam Other Question

Express 0.01 as a fraction. plesae show all your work I need to prove that verticle angles are congruent.

They gave me a diagram that shows 2 intersecting lines .
the < on the left it labeled 1
the < on the right is labeled 3.
and the < on the top is labeled 2.