Answer:

Step-by-step explanation:
This is the answer because in a 30-60-90 triangle each side has a different formula to find it, the side across from angle 60 is half the hypotenuse and root 3
20 kilograms times 30 kilograms equals 600kg2.
Hope this helps:)
60% The percent of decrease from 15 to 6 is 60% :)
I took me a while I got it
it's 2x−1