The answer is 82. hope this helps!
Answer:
<h2>x = 1</h2>
Step-by-step explanation:
Look a t the picture.
The triangles on the picture are similar.
Therefore the sides are in proportion:
<em>cross multiply</em>

<em>divide both sides by 40</em>

Answer:
If they are not collinear, then the three points are coplanar.
Step-by-step explanation
Contrapositive is the negative + opposite of the original statement.
Answer:
28. add them all together