Write the expression in the form a + bi.
A. 
+ 
i
B. - 
+ 
i
C. 
+ 
i
D. 
- 
i
Answer: D
Mathematics
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Perform the indicated operation. Be sure to simplify your answer.
+ 
+ 
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the expression if ? = 45°. Do not use a calculator.f(?) = csc ?Find f(?).
A. -
B. 2
C. 
D. 
Mathematics
Use the following information to fill in the blank: 
21 T = ___ mL
A. 1.4 B. 315 C. 105 D. 4.2
Mathematics
Estimate by rounding as directed.0.06 + 17 + 0.73; nearest one
A. 21 B. 19 C. 16 D. 18
Mathematics