Complete.1800 sec = ___ hr
A. 5
B. 30
C. 3
D. 0.5
Answer: D
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Find the margin of error for the survey results described. In a poll of 1757 adults, 30% said that they exercised regularly.Give your answer as a percentage to one decimal place.
A. 4.8% B. 2.4% C. 1.2% D. 0.1%
Complete.14 yd = 
ft
A. 168 B. 504 C. 126 D. 42
Suppose ? is an angle in standard position. Given an equation of the terminal side of ?, give the exact value of the indicated trigonometric function(s). Rationalize denominators if necessary.y = 9x, Quadrant IFind tan ? and cot ?.
A. tan ? = 82; cot ? = 
B. tan ? = 
; cot ? = 9
C. tan ? = 9; cot ? = 
D. tan ? = 
; cot ? = 
Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(4 - 4i)(4 - 9i)
A. -20 + 52i B. -20 - 52i C. 52 + 20i D. 36i2 - 52i + 16