exam Maths Puzzle Numerical Ability

By using Slopes form, show that (3, 1), (6, 3) and (2, 9) are the vertices of a right triangle.

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exam Other Question

OH WHAT WOULD YOU PLUG IN FOR X IN THIS PROBLEM

G(X) = X2ND POWER - 2Y
3[G(X)+4]
How many turns will a pinion gear having 20 teeth make if a ring gear having 37 teeth makes 185 turns?