exam Maths Puzzle Numerical Ability

perform the indicated operation simplify I need to know how to set this problem up and solve

z^2+11z+18/z^2+12z+27 divided by z^2+2z/z^2-6z-27

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one letter of the alphabet appears on each of 26 cards. you choose a card at random and then replace it. then you choose a secind card. assume Y is consonant. P(I,A) The base of a cylinder is a right triangle topped by a 60ْ sector of a circle, as shown. If the dementions are in meters and the height of the cylinder is 8 meters, what is