exam Maths Puzzle Numerical Ability

what is the complement of the complement of an angle whose measure is x?

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exam Other Question

Solve each system by graphing

2x=3y
y=2x+4

Thanks I was told to solve for a and b...I tried the normal methods of finding the answer, but could not come up with a answer that seems correct. Here is the question:

(36/a^2)+(4/b^