Iven euler's formula ejx=cos(x) jsin(x) (j is the imaginary number), could i know how to write the following f(x) as a finite sum of complex exponentials: 1) f(t)=1 cos(t) sin(2t 90∘).

45% of the trees in a park are apple trees. there are 27 apple trees in the park. how many trees are in the park in all?

The scatter plot shows the number of animal cells clara examined in a laboratory in different months: plot ordered pairs 1, 20 and 2, 60 and 3,100 and 4, 140 and 5, 180 what is the approximate predicted number of animal cells clara examined in the 9th month?

Without any equipment, you can see stars that are 2{,}800{,}0002,800,0002, comma, 800, comma, 000 light-years away. by looking through a small telescope, you can see stars that are 3{,}112{,}000{,}0003,112,000,0003, comma, 112, comma, 000, comma, 000 light-years away. approximately how many times as far can you see using a small telescope as without any equipment?