The graph below shows the depth of water in a river over a period of 10 days during what time span did the depth of the water re
main the same and what was the depth of the water?
1 answer:
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Answer:
13
Step-by-step explanation:
(3 - 2i)(3 + 2i)
Expand
(9 + 6i - 6i - 4i^2)
Add
(9 - 4i^2)
Convert i^2
i^2 = ()^2 = -1
(9 - 4(-1))
Add
(9 + 4)
= 13