Perform the indicated operation. Assume that all variables are nonnegative.20
- 6
A. 14
B. 26
C. 98
D. 14
Answer: D
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Perform the indicated operations graphically.(-4 + 4j ) + ( 2 + 4j )
A. 
a = -4 + 4j
b = 2 + 4j
c = (-4 + 4j ) + ( 2 + 4j )
B. 
a = -4 - 4j
b = 2 + 4j
c = (-4 + 4j ) + ( 2 + 4j )
C. 
a = -4 + 4j
b = 2 + 4j
c = (-4 + 4j ) + ( 2 + 4j )
D. 
a = -4 + 4j
b = 2 + 4j
c = (-4 + 4j ) + ( 2 + 4j )
Solve the problem.From a point on a river, two boats are driven in opposite directions, one at 9 miles per hour and the other at 11 miles per hour. In how many hours will they be 40 miles apart?
A. 2 hr B. 1 hr C. 4 hr D. 3 hr
Solve.The time to drive a fixed distance varies inversely as the rate. If the rate increases, what happens to the time?
A. It decreases. B. It stays the same. C. There is not enough information. D. It increases.
Rewrite the series using summation notation. Use 1 as the lower limit of summation.6 + 
+ 
+ . . . + 
A. 
B. 
C. 
D. 