Use De Moivre's theorem to evaluate the expression. Write the result in standard form.(-i)11
A. 1
B. -1
C. -i
D. i
Answer: D
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Ned buys a chocolate-strawberry-vanilla cake in Figure (i) for $14.00. He cuts the cake into six 60° wedges as shown in Figure (ii). Ned values strawberry six times as much as chocolate. He does not value vanilla cake at all.
How much does Ned value piece 6?
A. $2.50 B. $2.00 C. $0.50 D. $1.00 E. none of these
Solve the problem.Find the surface area S of a right circular cylinder with radius 10 cm, and height 4 cm. Use 3.14 for ?. Round your answer to one decimal place.
A. 1256.0 cm2 B. 439.6 cm2 C. 753.6 cm2 D. 879.2 cm2
Write each rational expression as an equivalent expression with the LCD of the two expressions as the denominator.
and 
A. 
; 
B. 
; 
C. 
; 
D. 
; 
Solve the problem.Two angles are supplementary, and one is 5° more than six times the other. Find the larger angle.
A. 70° B. 155° C. 25° D. 110°