Simplify the expression.
A. -15
B. 15
C. 3
D. -3
Answer: D
Mathematics
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Provide an appropriate response.Use the fact that sin-1 x = x + 
for |x| < 1 to find the series for cos-1 x.
A. 
- 
B. 
- x - 
C. 
- x + 
D. 
- x + 
Mathematics
Determine whether the sets A and B are equal, equivalent, both, or neither.A = {2, 13}B = {21, 3}
A. Equivalent B. Equal C. Neither D. Both
Mathematics
The abacus in the figure has "five" playing the role of "ten." (a) What number is represented on this five-bead abacus? (b) How would this number naturally be recorded?
A. (a) 56, (b) 111 B. (a) 980, (b) 12,410 C. (a) 96, (b) 341 D. (a) 196, (b) 1241
Mathematics
Find the component form of the indicated vector.Let u = 
. Find -7u.
A. 
B. 
C. 
D. 
Mathematics