exam
Maths Puzzle
Numerical Ability
12b squared+23b-5=-15
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exam Other Question
The distance d in miles that can be seen on the surface of the ocean is given by d=1.3√(h,) where h is the height in feet above the surface. How high (to the nearest foot) would a platform have to see a distance of 13.5 miles?
Write three quadratic equations with a,b,c (coefficients of x^2, x and the constant) as
1. integers
2. rational numbers
3. irrtional numbers