In prenatal testing for spina bifida, a life threatening disease, a false positive result indicates that an fetus has spina bifida when, in fact, it does not; a false negative result indicates that a fetus does not have spina bifida when, in fact, it does. To detect spina bifida most accurately, physicians should use the [...]
If k is a positive constant and y = |x – k| – |x + k|, what is the maximum value of y? (Contributed by JR) (1) x < 0 (2) k = 3 A) Statement 1 alone is sufficient but statement 2 alone is not sufficient to answer the question asked. B) Statement 2 [...]
Vertices of a quadrilateral ABCD are A(1,1), B(5,6), C(10,10) and D(6,5). What is the shape of the quadrilateral? A. Square B. Rectangle but not a square C. Rhombus D. Parallelogram but not a rhombus E. None of these
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