Write the complex number in standard form.
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C) 2 + 21i
Mathematics
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Round off the approximate number as indicated.2090 2 significant digits
A. 2100 B. 2200 C. 290 D. 2000
Mathematics
Solve using Cramer's rule, if possible. If it is not possible, state whether the system is inconsistent or has infinitely many solutions.
A. (7, 1) B. (1, 7) C. (-7, -1) D. (-1, 7)
Mathematics
Determine the value of the trigonometric function of ? using the given information.If csc ? = 
and sec ? = 
, then determine the value of tan ?.
A. 
B. 
C. 
D. 
Mathematics
List all numbers for which the rational expression undefined.
A. -7 B. 7, 6 C. 7 D. None
Mathematics