Find the length of the arc intercepted by a central angle ? in a circle of radius r. Round your answer to three decimal places when necessary.? = 40°, r = 12 in.
A. 9.216 in.
B. 8.378 in.
C. 7.54 in.
D. 6.702 in.
Answer: B
Mathematics
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Use reduction formulas to evaluate the integral.
A. 
sec2 6x tan 6x + 
ln
+ C
B. 
sec 6x tan 6x + 
ln
+ C
C. 
sec 6x tan 6x - 
ln
+ C
D. 
sec 6x tan 6x + 
ln
+ C
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Use dimensional analysis to convert the unit indicated.7 m to ft
A. 7.8 ft B. 2.1 ft C. 6.3 ft D. 23.0 ft
Mathematics
Use elimination by substitution to find the solution for the following system.
A. x = 36, y = 4 B. x = 9, y = -1 C. x = -4, y = 36 D. x = 36, y = -4
Mathematics
Find the LCD for the set of fractions.
, 
A. 28 B. 180 C. 2 D. 90
Mathematics