Solve the problem.Jill, the tallest female in the sophomore class, has a height of 69.75 inches. The heights of sophomore females are normally distributed with mean 62.7 inches and standard deviation 2.5 inches. Determine the z-score corresponding to Jill's height.
A. z = 2.72
B. z = 2.62
C. z = 3.02
D. z = 2.82
Answer: D
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Simplify. Assume that all variables represent positive numbers.
A. 5.5x4yz2
B. 11x4z2
C. 11x6z3
D. 5.5x4z2
Use the fundamental identities to find the value of the trigonometric function.Find sin ? if tan ? = - 
and cos ? > 0.
A. - 
B. - 
C. 
D. - 
Graph the cycloid for t in the indicated interval.x = 6t - 6 sin t, y= 6 - 6 cos t, -2? ? t ? 2?
A. 
B. 
C. 
D. 
If an argument reads:
If ,PQ ? QR, then ?PQR is a right angle. If ?PQR is a right angle, then PQR is a right triangle. If ?PQR is a right triangle with ?Q the right angle, then (PQ)2 + (QR)2 = (PR)2. then we can conclude (a) PQ ? QR (b) If PQ ? QR then (PQ)2 + (QR)2 = (PR)2. (c) If ?PQR is a right angle then (PQ)2 + (QR)2 = (PR)2. (d) All of these are valid conclusions. (e) Both answers (b) and (c) are correct.