Find the limit.
sec2 x - tan2 y + z
A. 2
B. 10
C. 3
D. 11
Answer: D
Mathematics
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Write an inequality to describe the situation.In order for a chemical reaction to remain stable, its Celsius temperature must be less than 
For which Fahrenheit temperatures will the reaction remain stable? To convert a Fahrenheit temperature to its Celsius equivalent, we use the formula C = 
(F - 32).
A. 
(F - 32) ? 73.43
B. 
C + 32 ? 73.43
C. 
(F - 32) > 73.43
D. 
(F - 32) < 73.43
Mathematics
Use the formula A = P(1 + rt) to find the indicated quantity.A = $16,400; r = 10%; 90 days. Find P.
A. $16,810 B. $16,400 C. $16,000 D. $400.00
Mathematics
Use the imaginary unit to write the expression.
A. 2i
B. -i
C. ±2
D. -2i
Mathematics
Prove the identity.tan2x + cos 2x = 1 - cos 2x tan2x
What will be an ideal response?
Mathematics