Need help on these two!!

The first one is false and the second is vertex

Step-by-step explanation:

1, 0.5 + 0.5 + 0.5 - 0.5

2, 0.5 + 0.5 + 0.5 + 0.5

3, ( 0.5 + 0.5 + 0.5 ) / 0.5

4, 0.5 / 0.5 / 0.5 / 0.5

5, 5 * 5 / sqrt(5) / sqrt(5)

6, 55 / 5 - 5

7, 5 + ( 5 + 5 ) / 5

8, ( 0.5 * 5 ) + 5 + 0.5

9, 5 + 5 - ( 5 / 5 )

10, ( 55 - 5 ) / 5

11, 5 + 5 + ( 5 / 5 )

12, ( 55 + 5 ) / 5

13, ( 5! - 55 ) / 5

14, 5! / 5 - 5 / 0.5

15, ( 5 + 5 ) / 0.5 - 5

16, 55 / 5 + 5

17, 5! / ( 5 + 5 ) + 5

18, ( 5! - 5 ) / 5 - 5

19, ( 5! - 5 * 5 ) / 5

20, 5 / 0.5 + 5 / 0.5

This took me around 35 to 45 minutes of testing different combinations in a calculator, I hope that this satisfies what you needed.

Please note that most people probably wouldn't have be willing to spend this much time, but I was happy to help you on the Four Fives puzzle.