Perform the indicated operation. Simplify the result.
- 
A. 
B. 
C. 
D. 
Answer: A
Mathematics
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Find the length of the curve.x = cos 2t, y = sin 2t, 0 ? t ? 2?
A. ? B. 4? C. 6? D. 2?
Mathematics
Find the length of the curve.x = 6et sin t, y = 6et cos t, 0 ? t ? 1
A. 6
(e - 1)
B. 6
e
C. 12(e - 1)
D. 
(e - 1)
Mathematics
Solve the problem.The half-life of Cesium 134m is 3.0 hours. If the formula 
gives the percent (as a decimal) remaining after time t (in hours), sketch P versus t.
A. 
B. 
C. 
D. 
Mathematics
Solve the system by the substitution method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(7, 4)}
B. no solution; ?
C. {(4, 7)}
D. infinitely many solutions; {
x - 7 = y} or {
y + 4 = x}
Mathematics