
This result is actually true for any exterior angle. The exterior angle of a triangle is equal to the sum of the two remote angles, and above is a short proof of it.
Answer:
Step-by-step explanation:
If by opposite you mean...
1 opposite is -1
If so then its 0 because any rational number and its reciprocal is always 0 its math crazy stuff
It's the first one, an algebraic expression contains variables
Answer:
45:18:36
Step-by-step explanation:

substitute x back into 5x:2x:4x
Therefore, 99 in the ratio of 5:2:4...
45:18:36