The answer would be B 21/4
X is twenty
2x+6x+20=180
8x=160
X=20
Answer:

Step-by-step explanation:
Simply plug in 10 for <em>n</em>
9(1/3)¹⁰⁻¹
9(1/3)⁹
9(1/19683)
9/19683

Answer:
5.74 so that would be the third option
Step-by-step explanation:
always remember to square root if not answer will be counted as incomplete or incorrect!
Angle F should be 46 degrees