Answer:
You can add your question to your question or add a picture to it.
Step-by-step explanation:
His new position is 3.75 meters 12.25 - 8.5 = 3.75.
Her new position is 20 ft 9 1/2 + 10 1/2 = 20.
3(X-5)=27. 3x-15=27. 3x=42. X=14. It looks like they tried to add 5 instead of multiplying it, and they added 5 and 27 wrong. :)
Answer:
-i.
Step-by-step explanation:
Applying DeMoivre' s theorem:
(sin 30 + i cos 30)^18
= sin(18*30) + i cos(18*30)
= sin 540 + i cos 540
= sin (3*180) + i cos (3*180)
= 0 + -1 * i
= -i.