Solve the problem.Susan has been working on a job that will require 45 hours to complete. If she has completed 
of the job, how many hours has she worked?
A. 40 hours
B. 20 hours
C. 5 hours
D. 4
hours
Answer: A
Mathematics
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Evaluate the integral.
A. ln 
+ C
B. 2 ln 
+ C
C. 2 ln 
+ C
D. 2 sech2 
+ C
Mathematics
Determine whether the equation is an identity, contradiction, or conditional equation.4r + 9 = 17
A. Identity B. Conditional C. Contradiction
Mathematics
Solve the equation on the interval 0 ? ? < 2?.2 cos2 ? - 1 = 0
A. 
B. 
C. 
D. 
Mathematics
In the figure below, a = 6, c = 12, and d = 10. Use this information to solve the parallelogram for b. The diagonals of the parallelogram are represented by c and d. Round your answer to two decimal places.
figure not drawn to scale
A. 2.54 B. 5.91 C. ?9.27 D. 6.33? E. 7.59
Mathematics