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!
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Answer:
x=7.78
Step-by-step explanation:
142=10x+8x+2
Move all numbers with the same variables to each side to separate them.
142-2=10x+8x
140=18x
Divide by 18.
x= 140/18
x=7.78
Y = 12 because you multiply x by two to get x2, which is 30, and multiply y by two to get 12 - this is wrong, the answer is three, i did the math backwards
Answer:
d is your answer
Step-by-step explanation: