Solve the equation in the complex number system.x4 - 6x2 - 7 = 0
A. {- 
, 
, i, -i}
B. {
i, i}
C. {
, 7}
D. {-
i, -i}
Answer: A
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Solve the problem.A ceramics workshop makes serving bowls, platters, and bread baskets to sell at its Winter Festival. A serving bowl takes 3 hours to prepare, 2 hours to paint, and 9 hours to fire. A platter takes 16 hours to prepare, 3 hours to paint, and 4 hours to fire. A bread basket takes 4 hours to prepare, 15 hours to paint, and 7 hours to fire. If the workshop has 129 hours for prep time, 77 hours for painting, and 108 hours for firing, how many of each can be made?
A. 6 serving bowls, 3 platters, 7 bread baskets B. 8 serving bowls, 7 platters, 4 bread baskets C. 7 serving bowls, 6 platters, 3 bread baskets D. 3 serving bowls, 7 platters, 6 bread baskets
For the given graphical representation of vector v, estimate a1 and a2 so that 
and calculate 
.
A. a1 = 10, a2 = 0; 
= 10
B. a1 = 0, a2 = 10; 
= 3.2
C. a1 = 0, a2 = 10; 
= 10
D. a1 = 0, a2 = 10; 
= 100
Simplify the expression.
÷ 
A. (z + 8)(z + 7)
B. 
C. 
D. 
Divide. Write a mixed numeral for the answer.
A. 403
B. 402
C. 402
D. 402