Solve the problem.A circular swimming pool, 20 feet in diameter, is enclosed by a circular deck that is 6 feet wide. What is the area of the deck? Use ? = 3.1416.
A. 1206.4 ft2
B. 772.8 ft2
C. 314.2 ft2
D. 490.1 ft2
Answer: D
Mathematics
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Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Mathematics
Solve.A manufacturer of medical supplies produces 1-liter bags of saline solution. The cost to produce x thousand bags of saline is given by the cost function 
where C is the cost in thousands of dollars. Find the cost to produce 2000 units.
A. $300 B. $0.3 C. $19,900 D. $16,700
Mathematics
Perform the indicated operations.
- 
+ 
A. 
B. 
C. 
D. 
Mathematics
Use a calculator to approximate the root to the nearest thousandth.
A. 13.441 B. 13.469 C. 13.454 D. 13
Mathematics