Simplify the expression.(1 + cot ?)(1 - cot ?) - csc2 ?
A. -2 cot2 ?
B. 2
C. 0
D. 2 cot2 ?
Answer: A
Mathematics
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Express the relationship between a small change in x and the corresponding change in y in the form 
.y = csc(4x2 - 1)
A. dy = -8x csc(8x) cot(8x) dx B. dy = 8x csc(4x2 - 1) cot(4x2 - 1)dx C. dy = -8x csc(4x2 - 1) cot(4x2 - 1) dx D. dy = -4x2 csc(4x2 - 1) cot(4x2 - 1) dx
Mathematics
Multiply.(y - 5)2
A. 25y2 - 10y + 25 B. y2 + 25 C. y2 - 10y + 25 D. y + 25
Mathematics
Solve the problem.Find the difference in altitude between an ocean floor 
below sea level and an ocean canyon 
below sea level.
A. -300 feet B. 154 feet C. 300 feet D. -154 feet
Mathematics
Provide an appropriate response.Explain the error in the following: log43y = log43 ? log4y.
What will be an ideal response?
Mathematics