Please need help asap!

i belive those are the ones that are under 90 degreese.

50- 250 is correct i did that one too

step-by-step explanation:

-60.75

step-by-step explanation:

just add the numbers then put the negative sign on it

step by step solution :

step   1   :

1.1     4 = 22

(4)3 = (22)3 = 26

equation at the end of step   1   :

  ((23) • 26)2

step   2   :

equation at the end of step   2   :

  (23 • 26)2

step   3   :

final result :

  218

ya