By doing doing the math question and explaining it at the same time
<span>The orthocenter is outside the triangle if it's an obtuse triangle.</span>
1+2=180
1=3=(36+40)/2=38
2=180-38=142
So correct answer is C
For the answer to the question above asking to e<span>xplain why the events "getting a black marble" and "getting a red marble" are mutually exclusive.
</span>A marble can have only one color, so you cannot choose a marble that is both black and red. Therefore the events are mutually exclusive (cannot happen simultaneously)