exam Maths Puzzle Numerical Ability

A roof rises 9.75 ft over a horizontal distance of 17.24 ft. What is the slope of the roof to the nearest hundredth?

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exam Other Question

What is the general rule on whether a decimal terminates or repeats? I need help in knowing how to do this problem when solving for x. (x+5)/(x-4)= 3/x+36/(x^2-4x) thank you