exam Maths Puzzle Numerical Ability

Simplify

18r^2t^15/12rt^12

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exam Other Question

If f(x)=3(1/125)^(x-2) +12, then what is the value of x when f(x)=87? Suppose that the width of a rectangle is 2 inches shorter than the length and that the perimeter of the rectangle is 80.

A) Set up an equation for the perimeter involving only