Answer:
2.81
Step-by-step explanation:

Gabriel has 4 partners.
When you take the 4 and multiply it by 4, you get 16 where you'd take half of the 16 and add it to it. So you'd have 16 + 8 where it equals 24 and then add the original 4 and you get 28.
If you mean how many minutes are in 2.5 hours the answer is 150 minutes sorry if you meant it another way
The answer is:
2 1/6
Hope this helped :)
To do this problem you would need to have at least one side length AND the hypotenuse to figure out the other side length.