Find the indicated coefficient or term.The 12th term in the expansion of (x - 2y)13
A. 79,872x11y2
B. -159,744x2y11
C. 79,872x2y12
D. -159,744x11y2
Answer: B
Mathematics
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Find the expected value.The following table gives the distribution of heights for female students at one U.S. college. 
Find the expected value of height for women at this college. Use the midpoint of each category, (for example use 58 for the 57-59 category). Use 74 for the 72 and over category.
A. 64.6 in. B. 64.2 in. C. 63.8 in. D. 65.0 in.
Mathematics
Use implicit differentiation to find dy/dx.x5 = cot y
A. - 
B. 
C. 
D. - 
Mathematics
Perform the indicated operation. Simplify, if possible.
+ 
- 
A. 
B. 
C. 
D. 
Mathematics
Convert the angle to decimal degrees and round to the nearest thousandth of a degree.209°2'13''
A. 209.047 B. 208.997 C. 209.097 D. 209.037
Mathematics