Simplify the expression. Assume that all variables are positive when they appear.
A. 
B. 
C. 
D. 
Answer: B
Mathematics
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Solve the problem.The voltage E in an electrical circuit is given by E = 5.9 cos 50?t, where t is time measured in seconds. Find the period.
A. 25
B. 
C. 
D. 25?
Mathematics
Solve the rational inequality. Graph the solution set.
< 1
A. (-?, -4) ? (6, ?)
B. (-?, -4)
C. (-4, ?)
D. (-4, 6)
Mathematics
Combine like terms.-2b + 5b
A. 3b B. 3b2 C. -3b D. -7b
Mathematics
Use a calculator to evaluate the expression. Round the result to five decimal places.log8 36.8
A. 0.57674 B. 1.56585 C. 1.73388 D. 3.60550
Mathematics