Answer:
Option (2)
Step-by-step explanation:
Given : y = 
If x = 7i
y = 
By simplifying denominator of the given rational expression,
y = 
y = 
y = 
y =
[Since, i² = (-1)]
y =
y = 
y = 
Therefore, Option (2) is the correct option.
Answer:
48 sides
Step-by-step explanation:
A nonagon has 9 sides
A decagon has 10 sides
10 + 10 + 10 = 30
9+9 = 18
30 + 18 = 48
48 sides in total
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1. Supplementary
2. Complementary
3. Adjacent angles
4. Vertically opposite angles
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