Round 21,384 to the nearest ten.
?
A. 21,300
B. 21,390
C. 20,000
D. 21,380
E. 21,400
Answer: D
Mathematics
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Find the acute angle between the lines.y = 
x + 6 and y = - 
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A. 30° B. 60° C. 75° D. 45°
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Use series to evaluate the limit correct to three decimal places.
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Solve.x2 = 
A. ± 
B. 
C. ± 
D. 
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Solve.log64 4 = w
A. w = 
B. w = 16
C. w = 3
D. w = 64
Mathematics