exam Maths Puzzle Numerical Ability

x^3-18x^2+81

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exam Other Question

(Use 4 steps)
Given: a and c are vertical angles formed by lines n and m.

Prove: a = c

Pls. use the two column proof...
The statement and the reason for this proof... When young MacDonald was starting his farm a long time ago, cows cost $10 each, pigs cost $3 each, and chickens cost $0.50 each. He purchased at least one of each kind of animal. He paid axactly $100 for exactly 100 animals. How many chickens did he buy?