Bertha read 21 books. Each book had 155 pages. How many pages did she read altogether? 465 pages
2 answers:
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Answer:
D) 1
Step-by-step explanation:
When you start raising i to certain powers, you begin to notice a pattern.
This cycle repeats forever. Since 84 is a multiple of 4, i^84 must be 1. Hope this helps!