Find the exact value under the given conditions.cos ? = - 
, 
< ? < ?; sin ? = 
, 
< ? < ?Find tan(? + ?).
A. - 
B. 
C. 
D. - 
Answer: C
Mathematics
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Evaluate the expression according to the order of operations.
- 4
A. 4 B. 60 C. 68 D. 12
Mathematics
Find the center of mass of a thin plate covering the given region with the given density function.The region bounded by the curves y = ± 
and the lines x = 1 and x = 9, with density ?(x) = 
A. 
= 2, 
= 0
B. 
= 5, 
= 0
C. 
= 4, 
= 0
D. 
= 3, 
= 0
Mathematics
Solve the problem.The pharmacist mixed 4.59 grams of one drug with 4.631 grams of another drug. What was the weight of the mixture?
A. 9.262 g B. 10.321 g C. 9.221 g D. 9.18 g
Mathematics
Solve the problem.Find the area A of a rectangle with length 2.6 m and width 11.8 m.
A. A = 14.4 m2 B. A = 61.36 m2 C. A = 10.4 m2 D. A = 30.68 m2
Mathematics