Indicate whether the statement is true always, sometimes, or never.A complex number is an imaginary number.
A. Always
B. Sometimes
C. Never
Answer: B
Mathematics
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Perform the following operation.
?
Add 
and 
?
A. 
B. 
C. 
D. 
E. 
Mathematics
Solve the problem. First use front end rounding. Then find the exact answer.The number of vacationers at the lake was 5450 on Friday. If this was 4375 more than on Thursday, how many people were at the lake on Thursday?
A. Estimate: 9900 vacationers; exact: 9825 vacationers B. Estimate: 1000 vacationers; exact: 1075 vacationers C. Estimate: 1100 vacationers; exact: 1070 vacationers D. Estimate: 9000 vacationers; exact: 9830 vacationers
Mathematics
Solve.25% of 16 is what number?
A. 4 B. 40 C. 64 D. 6.4
Mathematics
In how many ways can a seven-question true-false exam be answered? (Assume that no questions are omitted.)
a. 138 b. 128 c. 133 d. 118
Mathematics