Find the exact value of the expression. Do not use a calculator.1 + cot2 30° - sec2 45°
A. 0
B. 1
C. 3
D. 2
Answer: D
Mathematics
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Multiply.
(
+ 
)
A. 40 - 16i B. 16 + 40i C. -16 - 40i D. -16 + 40i
Mathematics
Factor.2x2 - 2x - 12
A. 2x2 - 2x - 12 B. (2x + 4)(x - 3) C. 2(x - 2)(x + 3) D. 2(x + 2)(x - 3)
Mathematics
Find the distance between the pair of points. Where appropriate, give an approximation to three decimal places.(p, 0) and (0, y)
A. p2 + y2
B. 
C. 
D. 
Mathematics
The amount of salt in the tank at time t in the previous two problems is Select the correct answer. ?
A. 
B. 
C. 
D. 
E. 
Mathematics