what is the pattern and what is the next number 3,-9,27,-81,?

243.

Step-by-step explanation:

they are multiplying by -3.

3x(-3)= -9

-9x(-3)= 27

27x(-3)= -81

so you would do -81x(-3) which equals 243.

178.3 ft

Step-by-step explanation:

Since you have the angle 27 and the side length of 350 you can set up a proportion that is Tan(27)=y/350. You can solve from this to 350*tan(27)=y and then simplify to 178.3.