How many subsets does the set B = {1, 3, 7} have?
A. 32
B. 2 ? 3
C. 23
D. 7
E. none of these
Answer: C
Mathematics
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Write the number in trigonometric form. Let 0 ? ? < 2?.7i
A. 7(cos 0 + i sin 0)
B. 7(cos 
+ i sin 
)
C. 7(cos ? + i sin ?)
D. 7(cos 
+ i sin 
)
Mathematics
Factor by grouping.5x3 + 25x2 + 9x + 45
A. (x + 5)(5x2 - 9) B. (x + 5)(5x2 + 9) C. (x - 5)(5x2 + 9) D. (x + 5)(5x + 9)
Mathematics
Identify the radicand.xy2
A. xy2
B. 
C. x + 5
D. 
Mathematics
Find the quotient.0.82 ÷ 0.001
A. 8200 B. 820 C. 82 D. 0.82
Mathematics