Additive inverses add to zero. the additive inverse of any number is just that number multiplied by -1. the additive inverse -1.9 is+1.9 because when you add them the result is zero
4/8 and 3/6. Both of these z= 1/2
I think u should check the first one again u made a mistake but the second one is correct if u need any more help ask me
I believe the answer is 9.
Acute isosceles triangles because they are all under 90 degrees