Write the expression in the standard form a + bi.If z = 7 - 9i and w = 6 + 7i, evaluate 
.
A. -13 + 2i
B. 13 - 2i
C. 1 + 16i
D. 13 + 2i
Answer: B
Mathematics
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Determine whether the sequence converges or diverges, and, if it converges, find 
an.an = ln(5n + 2) - ln(3n - 6)
A. ln 2
B. ln
C. ln
D. Diverges
Mathematics
Find a set of polar coordinates for the point for which the rectangular coordinates are given.(-1, -3)
A. (3.16, 4.39) B. (-3.16, -1.25) C. (-3.16, 4.39) D. (3.16, 1.25)
Mathematics
A sign is hung on the wall of a building as in the figure below. Given the downward force and the horizontal force, determine the minimum required strength of a cable from point A to point B.
Downward force: 6 pounds; horizontal force: 8 pounds
A. 7 pounds B. 13 pounds C. 10 pounds D. 9 pounds
Mathematics
Sketch the given exponential curve.y = 2-x
A. 
B. 
C. 
D. 
Mathematics