Evaluate the integral.
A. -2
+ C
B. ex sin-1 ex + C
C. sec-1 ex + C
D. sin-1 ex + C
Answer: D
Mathematics
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Solve.A rectangular yard has a perimeter of 398. The length is 9 ft more than 4 times the width. Find the width of the yard.
A. Width: 13 ft B. Width: 39 ft C. Width: 38 ft D. Width: 32 ft
Mathematics
Multiply the rational expressions.
? 
A. 
B. 
C. 
D. 
Mathematics
Use the addition formulas:
?
?
to calculate 
, given that 
and 
.
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve.The height in meters of females in a certain ethnic group is approximated by h = 0.52 + 2 log (t/3) where t is the girl's age in years and 1 ? t ? 20. Estimate a girl's height at 4 years of age in this particular ethnic group. Round to the nearest hundredth.
A. 0.77 m B. 0.96 m C. 1.12 m D. 0.52 m
Mathematics