The answer to your question would be 90.35. Have a good day!
THe answer is -7+1i.
I just did the assignment as well, hope this helps!
The square root of 285 lies between 16 and 17
c.
c² = a² + b² - 2 a b cos C
2 a b cos C = a² + b² - c²
cos C = (a² + b² - c²) / 2ab
C = arccos( (a² + b² - c²) / 2ab )
C = arccos( (17² + 8² - 16²) / (2 (17)(8) ) )
C ≈ 69.11°
Answer: 69.1
Answer:
Hence the weekly earnings of Nghiep= $136
Step-by-step explanation:
Let the weekly income of Nghiep be $ x.
As it is given that:
- Nghiep gave his mother half of his weekly earnings i.e. the amount he gave to his mother= $ (x/2).
So now we will be left with= $(x/2).
- Next he then spent half of what was left on a new shirt.
so the amount he spent on his shirt= $ (x/4)
Now he will be left with = $ (x/4).
Now it is given that the amount he had after spending on his shirt and giving to his mother= $ 34
i.e. 
Hence, the weekly earnings of Nghiep= $136.