Write the first three terms in the binomial expansion, expressing the result in simplified form.(x + 2)20
A. x20 + 40x19 - 760x18
B. x20 + 380x19 + 760x18
C. x20 + 760x19 + 760x18
D. x20 + 40x19 + 760x18
Answer: D
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Find the acute angle, in radians, between the lines.5x - 2y = -10 and 4x + 5y = 4
A. 0.2900 radians B. 2.847 radians C. 1.277 radians D. 0.2942 radians
Use the vectors in the figure below to graph the following vector. 
2u - z - w 
A. 
B. 
C. 
D. 
Graph the equations of the system. Then solve the system to find the points of intersection.
What will be an ideal response?
Solve the problem.John, the tallest male in the sophomore class, has a height of 71.75 inches. The heights of sophomore males are normally distributed with mean 67.8 inches and standard deviation 2.5 inches. Determine the z-score corresponding to John's height.
A. z = 1.58 B. z = 1.48 C. z = 1.78 D. z = 1.68