It is 30 degrees. Add 90 and 60 to get 180. Then subtract that from 180, since all triangles interior angles add to 180. You’ll get 30.
A. 100/20
The distance in meters should be divided by the time in seconds to get the value of the distance in meters travelled in one second.
X^2 + 3x - 6
This is because x^2 and 3x have nothing they can combine with, leaving them as their own number. 1 + - 6 will give you -5 as adding to a negative only reduces not adds entirely.
Hope this helps!
Um maybe add some answers choices or a picture next time pls !!