Write the expression in standard form.
A. -1
B. 1 + 2i
C. 1 - 81i
D. 1 - 2i
Answer: D
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Solve the problem.Suppose you buy 1 ticket for $1 out of a lottery of 1,000 tickets where the prize for the one winning ticket is to be $500. What is your expected net winnings?
A. -$1.00 B. $0.00 C. -$0.40 D. -$0.50
Find the center of mass of a thin plate of constant density covering the given region.The region bounded by the parabola y = 36 - x2 and the x-axis
A. 
= 0, 
= 
B. 
= 0, 
= 
C. 
= 
, 
= 0
D. 
= 0, 
= 
Solve by using the Superposition Theorem:
.
R1 = 10 Kê, R2 = 5 Kê, R3 = 20 Kê, R4 = 15 Kê, E1 = 30 V, and
E2 = 45 V. What is the value of VR ?
4
a. 23.6 V
b. 17.5 V
c. 11.8 V
d. 8.8 V
e. 6.82 V
Add.2113 + 2431
A. 4425 B. 4526 C. 4742 D. 4544