Complete the identity.sin 2x - cot x = ?
A. cot x cos x
B. -cot x cos 2x
C. cot x cos 2x
D. -tan x cos 2x
Answer: B
Mathematics
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Solve the problem.The number of gallons of water in a swimming pool t minutes after the pool has started to drain is 
How fast is the water running out at the end of 10 minutes?
A. 2500 gal/min B. 5000 gal/min C. 500 gal/min D. 1000 gal/min
Mathematics
Find the perimeter. Use 3.14 for ? when needed.
A. 20.56 cm B. 6.28 cm C. 12.56 cm D. 16.56 cm
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Provide an appropriate response.Which is a list of the factors of 21?
A. 3, 6, 9, 12, 15, 18 B. 1, 2, 3, 6, 9, 18 C. 2, 4, 6, 8, 10, 12, 14, 16, 18 D. 1, 3, 7, 21
Mathematics