Perform the indicated operations and write the answer in the form 
where a and b are real numbers.(
- 4i)(
+ 4i)
A. 23
B. 7 + 16i
C. 11
D. 7 - 16i
Answer: A
Mathematics
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Find the probability.A company manufactures calculators in batches of 64 and there is a 4% rate of defects. Find the probability of getting exactly three defects in a batch.
A. 0.22105 B. 0.16224 C. 0.20185 D. 0.00006
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Is the first number divisible by the second number? Answer yes or no.62,855,947; 77
A. Yes B. No
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Decide whether the figure is convex or concave.
A. Concave B. Convex
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Simplify. Assume that all variables represent positive real numbers.5
+ 8
A. 35
B. -45
C. 45
D. 13
Mathematics