Use a half-angle formula to find the exact value of the expression.sin 
A. -
B.
C. -
D.
Answer: D
Mathematics
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Find the distance between the two points.
A. 3
B. 45
C. 3
D. 45
Mathematics
For the compound inequality, decide whether intersection or union should be used. Then give the solution set in both interval and graph forms.x ? -5 and x < 10
A. Intersection; ?
B. Union; (-?, ?)
C. Intersection; (-5, ?)
D. Intersection; [-5, 10)
Mathematics
Solve the problem.Use the formula P = Iekt. A bacterial culture has an initial population of 10,000. If its population declines to 6000 in 6 hours, what will it be at the end of 8 hours?
A. 5061 B. 6000 C. 2000 D. 2531
Mathematics
Solve the system, if possible. If a solution exists, give the value of x.
?
?
A.
B. ?
C. ?
D. ?
E. no solution
Mathematics